2017 MERCEDES-BENZ C-Class Problems & Complaints
Real owner complaints and problems reported to the National Highway Traffic Safety Administration (NHTSA). View common issues by component.
VIN Decoder
248
Complaints Reported
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Complaints by Component
ENGINE
49 complaints
this is my send time writing in. mercedes used the wrong wrist pins for the pistons leading to my wife getting a cracked piston on freeway in phx.if you look up cylinder 1 issues on this model there is a lot of people who have encountered this. why this hasn't been recalled and sticking consumers with a10k plus repair is beyond me. if you use the wrong parts you should be responsible for the repair!!!
Feb 16, 2025
I have an error code: P052E.
Oct 31, 2024
P052E code for PCV vent valve
Aug 11, 2024
cracked piston in cylinder #1. After doing research this is a common problem in the m274 engine from 2015-2018 which Mercedes is aware of but does nothing. mercedes need to be held responsible and a recall issued. This isn't a 2 or 3 thousand dollar repair!! this repair is 6 figures!!! Please hold them acountable!!! THX
Aug 10, 2024
Check engine light on. Test results: Positive Crankcase Ventilation Regulator Valve Performance CODE : P052E
Jul 22, 2024
+ 44 more complaints for this component
UNKNOWN OR OTHER
24 complaints
Sunroof Front Trim for Mercedes-Benz GLC300 IS ALL SCRATCHED BUT MERCEDES BENZ SAYS IT IS NOT COVERED BY THEM.
Sep 30, 2025
My car caught on fire due to AC malfunction
Jul 20, 2025
Error code P052E71 on a 2017 c300 with 100k miles. It seems to be a very common and recurring issue that appears to have no real solution and is costing consumers thousands upon thousands. This malfunction does relate to emissions and this vehicle is operated in California.
Jan 13, 2025
I purchased my 2017 Mercedes c class coupe in 2020, used. Around 2021, I started hear noise from the sunroof when driving on the highway. I went to get it repaired and they mentioned they needed to tighten the screws. This week, I was closing my sunroof and then I heard a crack. I went to a shop to get it manually closed for now on calis 105 degree heat. I am now learning there has been recalls for Mercedes 2017+ coupes but it’s not stated for my specific car to get it fixed. How do I go about this? I feel the sunroof is faulty and has been faulty.
Sep 08, 2024
The glass on the panoramic sunroof exploded/shattered under normal driving conditions. It was raining but not too heavy. It didn’t appear that anything hit the glass and no potholes were hit. It seemed to be due to pressure or temperature which caused the explosion which sounded like a loud gunshot and the glass was in pieces. There were no injuries as the sunroof shade was closed and thus the glass fell on the shade. It has not been inspected by dealership or insurance as closed on Sunday and today due to Labor Day, but yes it is available for inspection upon request. However, as it was raining and I needed to get home, I covered the entire sunroof with Duct Tape.
Sep 02, 2024
+ 19 more complaints for this component
SEAT BELTS
20 complaints
any action on Case 11699173 ?
Dec 02, 2025
Case already called in 11699173 - Stuck Seatbelt in B Pillar of 2017 Mercedes Benz 2 door hard top coupe. Seat belt will not come out of A pillar rendering seatbelt totally inoperable This VIN comes up negative under recall 21V03200 Case filed with MBUSA 18991593 still unresolved. Dealership is claiming a 2,200 Seatbelt Assembly is needed. now warning lights. The seatbelt was " lazy " and didn't smoothly retract prior to this incident when parked, door closed, the belt retracted with a loud motorized noise and now will not retract at all from A Pillar - Please follow up with on this Case # already called in over a week ago
Nov 23, 2025
The contact owns a 2017 Mercedes-Benz C300. The contact stated that upon arriving at his destination and exiting the vehicle, the driver’s side seat belt retracted and became stuck in the retracted position. As a result, the contact was unable to use the driver's side seat belt. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the seat belt assembly. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V032000 (Seat Belts), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 67,000.
Nov 13, 2025
The contact owns a 2017 Mercedes-Benz C300. The contact stated that both the front driver’s side seat belt and front passenger's side seat belt had failed to retract as needed. There was no warning light illuminated. Additionally, the contact stated that the seat belts buckles would unintendedly lodge under the seats. The vehicle was taken to the local dealer, but was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 21V032000(Seat Belts); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was unknown.
Jun 12, 2025
The contact owns a 2017 Mercedes-Benz AMG C43. The contact stated that the front driver’s side seat belt failed to retract as intended. No warning light was illuminated. The vehicle was taken to a local dealer for diagnosis but was not repaired due to the cost. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 21V032000 (Seat Belt); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 70,000.
Aug 09, 2024
+ 15 more complaints for this component
FUEL/PROPULSION SYSTEM
18 complaints
UNKNOWN it was just one day I started my car and turned the A/C on and I started getting this strong gasoline smell. I went on like a saw there is a recall for this problem for the M274 engines.
Dec 31, 2025
Cabin smells heavily like fuel and has a check engine light possibly a fuel leak
Nov 08, 2025
During cold starts the fuel injectors/clamps leak causing strong gasoline smell inside the cabin. After research online this is a common issue with W205 systems. I am beyond surprised this has not been investigated and reported as a safety recall as it can pose a fire hazard. Please investigate and Mercedes should be fixing this issue….
Jan 21, 2024
every winter this car will have a heavy smell of gas in the engine and the cabin, after driving it for around 15 minutes with the windows open in the cold it goes away. no problem in the summer time. My mechanic said it's a common problem with these cars.
Jan 02, 2024
There is a short rubber fuel line/hose in the engine compartment that is attached with compression clamps; the hose connects the fuel line from the gas tank to the high pressure fuel pump. When it gets cold outside (below ~40 degrees Fahrenheit) the clamps loosen a bit and the hose will leak gas The entire interior smells like gasoline, really bad.
Dec 19, 2023
+ 13 more complaints for this component
STRUCTURE
17 complaints
While driving home from work, without any warning or blunt force the sunroof exploded and shattered glass was everywhere
Dec 16, 2025
The contact owns a 2017 Mercedes-Benz C300. The contact stated that while driving 65 MPH on the highway, the contact heard a popping sound coming from an unknown part of the vehicle. The contact pulled over to the side of the road, exited the vehicle, and became aware that the roof panel had shuddered. The contact stated there was no glass in the vehicle. No injuries were sustained. The contact stated that the failure had occurred on two occasions. The vehicle was not taken to an independent mechanic or the dealer to be diagnosed. The vehicle was taken to the dealer by the previous owner to be repaired under NHTSA Campaign Number: 21V197000 (STRUCTURE); however, the recall repair failed to prevent the failure. The manufacturer was notified of the failure and informed the contact that there was no recall related to the failure. The manufacturer offered the contact a trade for the vehicle. The failure mileage was 105,000.
Nov 05, 2025
This is the same as recall for NHTSA ID: 21V-197. The panel flew off my 2017 Mercedes C300 W205. My vin number is not included in the recall. This is a safety issue and will need to be replaced.
Oct 23, 2025
Sunroof detachment Sunroof fell off while driving
Oct 16, 2025
The contact owns a 2017 Mercedes-Benz C300. The contact stated that while driving at 60 MPH, the contact became aware that an unknown part had detached from the vehicle. The contact stated that after stopping to refuel the vehicle, it was discovered that the roof panel was missing. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to NHTSA Campaign Number: 23V854000 (Structure); however, the VIN was not included in the recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 129,000.
Aug 18, 2025
+ 12 more complaints for this component
ELECTRICAL SYSTEM,ENGINE
9 complaints
ESP control unit software Recall 2016090002 Recall 2017110002 Recall 2020080016 And my car shows there’s cero recall active but is giving me problem showing code: U0121 u1110 U0122 B227d U0423 B227d
Apr 13, 2025
Hey good morning. There’s been a been a system failure. P052E Positive Crankcase Ventilation Regulator Valve Performance. Warning message I got was the engine light showed
Jan 04, 2023
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH THE PUSH TO START FEATURE. WHEN THE VEHICLE WAS STARTED, IT VIBRATED ABNORMALLY. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO HENDRICK MOTORS OF CHARLOTTE-MERCEDES BENZ (5201 E INDEPENDENCE BLVD, CHARLOTTE, NC 28212, (704) 909-6941). THE CONTACT WAS INFORMED THAT THE VEHICLE PERFORMED AS INTENDED. THE VEHICLE WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 40.
Sep 13, 2017
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT SPOKE WITH KEYES EUROPEAN (5400 VAN NUYS BLVD, VAN NUYS, CA 91401) WHO STATED THAT THEY HAD NO INFORMATION AND THAT THE CONTACT SHOULD CALL THE MANUFACTURER. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND STATED THAT THE VEHICLE WAS SAFE TO DRIVE. THERE WAS NO TIME ESTIMATE REGARDING PART AVAILABILITY. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
Aug 24, 2017
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300A. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 174V114000 (ELECTRICAL SYSTEM, ENGINE, AND ENGINE COOLING); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED MERCEDES-BENZ OF SAN ANTONIO (9600 SAN PEDRO AVE, SAN ANTONIO, TX 78216 (210) 920-3235) AND WAS INFORMED THAT PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
Aug 09, 2017
+ 4 more complaints for this component
AIR BAGS
9 complaints
The contact owns a 2017 Mercedes Benz C300. The contact stated while driving at a slow speed in traffic, another vehicle rear-ended and caused her to crash into the vehicle in front. The air bags did not deploy. The contact sustained injuries to the back of her head, her left shoulder, right wrist, and right arm along with chest pains and facial contusion. The contact sought medical attention at an emergency room. A police report was filed. The vehicle was not drivable. The contact towed the vehicle to her residence. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 57,000.
Jun 14, 2022
I was in a car accident on June 30,2021. A Car collided into my drivers side at the front left wheel. My airbags did not deploy and i was injured. my injuries consisted of neck, shoulder, and lower back. I was also thrown to the passenger side of the vehicle because my seat belt did not seem to lock. Thank you, [XXX] email- [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Jul 08, 2021
TL* THE CONTACT OWNS A 2017 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 20 MPH, WAS BROADSIDED ON THE PASSENGER SIDE BY ANOTHER VEHICLE. THE FRONTAL AIR BAGS DEPLOYED, BUT THE AIR BAG UNDER THE DASHBOARD OF THE DRIVER SIDE DEPLOYED WITH SUCH FORCE THAT CAUSED LACERATIONS AND SECOND DEGREE BURNS ON THE DRIVERS LEGS. THE POLICE WAS PRESENT AND A REPORT NUMBER: 38-18-85 WAS FILED. THE DRIVER WAS TRANSPORTED TO THE HOSPITAL BY AMBULANCE, TREATED AND RELEASED. THE VEHICLE WAS TOWED TO AN IMPOUND LOT, THE INSURANCE COMPANY LABELED THE VEHICLE DESTROY. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR A DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 8,000. THE VIN WAS UNAVAILABLE.
Aug 13, 2019
TL* THE CONTACT OWNED A 2017 MERCEDES-BENZ C300. WHILE AT A STOP LIGHT, THE CONTACT'S VEHICLE WAS INVOLVED IN AN HEAD ON COLLISION. THE DRIVER'S AIR BAG DEPLOYED, BUT NOT TO FULL CAPACITY. THE CONTACT SUSTAINED HEAD AND NECK INJURIES THAT REQUIRED MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO A TOW YARD. THE VEHICLE WAS NOT DIAGNOSED. THE VEHICLE WAS DESTROYED. THE MANUFACTURER AND DEALER WERE NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 14,000.
Jan 29, 2019
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS). THE CONTACT CALLED MERCEDES-BENZ OF GEORGETOWN AT 512-930-6150 (LOCATED AT 7401 N INTERSTATE 35 FRONTAGE RD, GEORGETOWN, TX 78626) AND WAS INFORMED THAT THE PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.
Aug 28, 2018
+ 4 more complaints for this component
STEERING
8 complaints
The contact owns a 2017 Mercedes-Benz C300. The contact stated that while starting and driving the vehicle, the electric power steering was inoperable. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The contact stated that the failure was related to NHTSA Campaign Number: 17V243000 (Steering). The failure mileage was approximately 25,000.
Feb 13, 2024
While driving on the freeway car pool lane with my wife, a sudden vibration in the front tires was observed, the car felt like it was pushed to the right then to the left even though it was in the center of the lane. Told my wife, "something is wrong with the car!" Thinking that I may have had a flat tire, I slowed down, the car went into a violent flat spin until the right rear end of the car hit the center lane divider. Airbags deployed. 911 was called, we were assisted by Highway patrol to the other side of the freeway. As the car was put on a flatbed tow truck, the tow truck driver commented that one of the front wheel was not turning. We found out that the right rack and pinion broke. The car was declared a Total Loss.
Feb 06, 2024
I was driving on highway I95, all the sudden, the vehicle shows, Power Steering Malfunctioning See Owner's Manual. I've lost the power steering in the middle of the highway. The steering was so hard and not safe. The next day, I've started the car and the issue isn't there anymore! Now the car is driving fine!!! Please, this need to be fixed, cause it may happen again, and that happens on a sharp curve, it may lead to a crash!
Jan 01, 2023
The contact owns a 2017 Mercedes-Benz C300. The contact stated that while driving at various speeds and attempting to make a turn, the steering wheel was significantly difficult to turn. The contact stated that he was able to drive the vehicle however, an extra effort was needed to steer the vehicle. The contact stated that the failure had been reoccurring while driving. The vehicle was taken to the local Pep Boys who informed the contact that they could not duplicate the failure. The contact referenced NHTSA Campaign Number: 18V850000 (Steering). The dealer was not notified of the failure. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA for assistance. The failure mileage was approximately 65,000.
Aug 03, 2022
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 18V850000 (STEERING). THE CONTACT CALLED KEYES EUROPEAN MERCEDES-BENZ AT 818-574-5053 (LOCATED AT 5400 VAN NUYS BLVD, SHERMAN OAKS, CA 91401) AND WAS INFORMED THAT THE PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE THE VIN WAS NOT PROVIDED.
Mar 14, 2019
+ 3 more complaints for this component
ENGINE,FUEL/PROPULSION SYSTEM
7 complaints
my whole entire car smells like gas. I cannot drive this car around because I will pass out and it is a safety hazard. There is a recall for this exact same issue, just not for my Vin number. I would like to get this done for my car, please.
Oct 21, 2024
Keep getting a code P052E! Changed the oil and code went away for a few days then came back. Looked into getting it fixed and it seems like Mercedes has known about this issue and hasn’t called for a recall on this piece of equipment! Very costly to fix and says it needs to be replaced every 30k to 50k miles! At around 1k to 3k to fix everytime that’s something they should recall
Aug 20, 2024
My Mercedes Benz stopped working. The mechanic shared it involves the: fault valve for crankcase ventilation has malfunction.
Aug 01, 2023
Code PO52E
Jul 08, 2023
I have a mercedes c300 2017 and recently I was driving my car and the check engine light came on all of a sudden so I took it to my local shop to diagnose it they told me it was the PCV valve, so I called mercedes and they’re telling me that this is not covered and of course my warranty is no longer covered I have about 63k miles on the car. Mercedes is saying they don’t have a recall for this but I’ve googled around and multiple people are saying the same issue happened to them around the 55-65k range. It’s super frustrating that this doesn’t flag a recall.
Mar 02, 2023
+ 2 more complaints for this component
VISIBILITY
7 complaints
The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving 65 MPH, there was a loud banging sound coming from the roof of the vehicle, prior to the glass sunroof panel being ejected from the roof panel and landed on the roadway. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 84,000.
Sep 20, 2024
The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving 65 MPH, the sunroof exploded inadvertently. The contact stated that the shade guard was closed when the failure occurred. The contact had not sustained any injuries. The contact continued driving at slow speeds, and there was glass falling on the road while driving. The vehicle was taken to the dealer, who provided a cost for the repair. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that they could not assist because the VIN was not included in a recall. The failure mileage was approximately 75,000.
Mar 18, 2024
The contact owns a 2017 Mercedes-Benz. The contact stated that while driving at an undisclosed speed, she attempted to open the sunroof, but when she looked, she noticed that only the left side was open. The contact stated that the failure reoccurred on two occasions. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
Aug 17, 2023
The contact owns a 2017 Mercedes-Benz C300. The contact stated that while driving at approximately 75 MPH, a loud popping noise was heard and then the sunroof exploded. The contact stated that there were no injuries sustained from the glass shards that had fallen inside the vehicle. No warning lights were illuminated. The vehicle was not yet taken to an independent mechanic or local dealer to be diagnosed repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The approximate failure mileage was 15,000.
Feb 22, 2023
The contact owns a 2017 Mercedes-Benz C300. The contact stated that she heard air entering the sunroof however, while attempting to close the sunroof, the sunroof failed to close as designed. There was no warning light illuminated. The vehicle was taken to the dealer however, the contact was unsure of the diagnostic result. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed of a program that was cost effective. The contact was referred to the NHTSA Hotline. The failure mileage was approximately 56,000.
Aug 25, 2022
+ 2 more complaints for this component
POWER TRAIN
5 complaints
PVC VALVE CODE. P052E Mercedes should fix this!
Jan 13, 2025
Positive Crankcase ventilation
Dec 15, 2023
My check engine light keeps jumping off and on, went to get diagnosed and the PCV valve came back. I’m not sure why
Jul 13, 2022
electronic rear axle lock problem. A recall was issued before but manufacturer has not done anything; therefore when the car is taken in, the dealer asks for a hefty $400 inspection fee
Mar 24, 2022
WHEN IDLING AT THE LIGHT. THE CAR WOULD SHUT ITSELF OFF. ALL THE WARNING LIGHTS WILL COME ON. I THEN HAVE TO RESTART THE CAR WITH THE PUSH START TO RESET IT. THEN IT'LL WORK FINE. I HAVE BEEN TO MERCEDES DEALERSHIP IN NEW ROCHELLE FOR FOUR TIMES ABOUT THIS ISSUE. THEY CHANGED THE BATTERY THE FIRST TIME. TWO DAYS LATER THE SITUATION OCCURRED AGAIN. THEN THE SECOND AND THIRD TIME THEY GAVE ME BACK THE CAR AND SAID THEY DIDN'T SEE ANYTHING WRONG BECAUSE NO CODES POPPED UP. BOTH TIMES I TOOK THE CAR BACK AND THE SITUATION OCCURRED AGAIN. THIS PROBLEM HAS OCCURRED OVER 30 TIMES SINCE OVER 29,000 MILES. THE DEALERSHIP IS TRYING TO FIGURE OUT THE ISSUE AND RIGHT NOW I AM IN A LOANER VEHICLE ON THE FOURTH TIME THAT I HAVE GIVEN MY CAR IN FOR SERVICE BECAUSE OF THIS SITUATION. THE INCIDENT IS DANGEROUS IN THAT ONE TIME I WAS IN AN INTERSECTION AND IT SHUT OFF ON ME. CARS GOING THE OPPOSITE WAY ALMOST HIT ME BECAUSE OF MY REACTION TIME TO PUT THE CAR ON START AND THEN RESTART THE CAR. THIS CAN BE POTENTIALLY DANGEROUS FOR POSSIBLE ACCIDENTS. IN ADDITION, I HAVE LOOKED ONLINE AND SIMILAR PROBLEMS HAVE OCCURRED WITH OLDER MODELS AND OTHER MODELS.
Apr 18, 2019
POWER TRAIN,ENGINE
5 complaints
Car check engine light came on with only 62,000 miles. Diagnosed as code P052E, the issue is the positive crankcase ventilation valve being faulty. Regular oil changes and maintenance was done. I see multiple complaints with this issue, why is this not recalled? It is very expensive to have fixed.
Jul 10, 2024
The contact owns a 2017 Mercedes-Benz C300. The contact stated that while at a stop light the vehicle stalled. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the battery cable needed to be replaced. The vehicle was repaired but the failure recurred. The vehicle was taken back to the local dealer where it was diagnosed that an update to the powertrain software was needed, and the transmission pump needed to be replaced. The vehicle was repaired but the failure persisted. The contact called the local dealer, and it was recommended that the transmission be replaced. The vehicle was not repaired. The manufacturer was contacted. The failure mileage was approximately 80,000.
Mar 29, 2024
My car threw the check engine code P052E, the issue is the positive crankcase ventilation valve being faulty. Incredibly common on this model and now failed on my car too at 60K miles. All maintenance was done up to this point with the dealer and at or before recommended intervals.
Sep 05, 2022
My car leaked oil very fast while me & my wife were on a trip and it stopped on the highway and engine was stalling and misfiring due to a manufacture defect that is common with this model so it did put us in a very dangerous & risky situation. Now after i paid $1,740 the dealer is saying that my car needs a new engine due to cracked piston in cylinder 1 that damaged the engine which is a common problem with this model around the 50k miles.
Aug 31, 2022
VEHICLE JERKS VERY VIOLENTLY WHEN ACCELERATING OR USING PADDLE SHIFTERS (IN MANUAL MODE). OTHER OWNERS SEEM TO ENCOUNTER SAME ISSUE
May 11, 2021
WHEELS
5 complaints
WHEEL LIPS ON THIS VEHICLE DEFORM WITH LITTLE PROVOCATION RESULTING IN RAPID AIR LOSS, LOSS OF HANDLING AND IN EXTREME CASES A CRASH. THE SHAPE OF THESE WHEELS DEVIATES FROM OTHER ALLOY WHEELS IN A WAY THAT PROMOTES THIS BEHAVIOR. THE CURVE OF THE RIM BARREL BETWEEN THE LIPS (ALSO KNOW AS THE BELL) IS MUCH SHALLOWER THAN MANY OTHER WHEELS. THE RESULT IS THAT THE ANGLE AT WHICH THE BARREL MEETS THE LIPS IS CLOSER TO A RIGHT ANGLE THAN COMMON. THE BARREL MEETING THE LIP AT AN ANGLE CLOSER TO PARALLEL WITH THE PAVEMENT GREATLY INCREASE THE RISK THAT SUDDEN DEFLATION COULD OCCUR RESULTING IN THE AFOREMENTIONED SAFETY ISSUES.
Apr 09, 2021
THE WHEELS ON MY TIRES WILL CRACK AT THE SLIGHTEST STRESS FROM THE ROAD. IT COULD BE A BUMP, A TINY POT HOLE, EVEN A STICK, AND THESE TIRES WILL BECOME DEFECTIVE, EITHER BY CRACKING, BECOMING FLAT OR THE WHEEL BECOMING COMPLETELY IMMOBLIZED. I HAVE BEEN STRANDED ON THE ROAD IN THE MIDDLE OF THE NIGHT FOR HOURS BECAUSE OF THESE DEFECTIVE TIRES. I'VE COME INTO WORK UN-SHOWERED WITH NO SLEEP, BECAUSE I WAS STRANDED FOR SOMETIMES UP TO 12 HOURS BEFORE I WOULD GET HELP. ITS HAPPENED AT LEAST ONCE A MONTH FOR THE PAST 4 YEARS. THERE IS NO WAY THESE TIRES PASSED EVEN BASIC INSPECTION. THEY ARE DANGER TO ANYONE USING THEM.
Jan 27, 2021
IN REGARD TO CONTINENTAL TIRES.THE WHEELS CRACK AT THE SLIGHTEST RESISTANCE. THE WHEELS CONSTANTLY NEED AIR PLACED IN THEM SOMETIMES TWICE A WEEK. IN A YEAR I HAVE HAD TO REPLACE 12 TIRES DUE TO CRACKING AT THE SLIGHTEST IMPACT. THE WHEELS DO NOT LAST 50 MILES AFTER BEING FLAT THEY ARE DESTROYED THE MINUTE THEY HIT IMPACT. THESE ARE DANGEROUS TIRES FOR ANYONE AND THESE NEED TO BE RECALLED.
Mar 25, 2019
TIRE FAILURE WHILE DRIVING. TREAD SEPARATED FROM SIDEWALL. MAYBE RELATED TO PIRELLI RECALL 16T018000. TIRE MANUFACTURED 05-17 AND DOT CE X2 T120 AND ECE HOMOLOGATION SYMBOL IS E4 0271937.
Jun 05, 2018
5 MONTHS AFTER RECIEVEING THE CAR I WAS ON THE HIGHWAY AND MY FRONT PASSANGER SIDE TIRE AIR PRESUURE INDICATOR WENT OFF. I PULLED OFF THE HIGHWAY AND PUT A "FIX A FLAT" IN THE TIRE THINKING I RAN OVER A NAIL. THE TIRE WENT LOW AGAIN SO I DROVE TO THE LOCAL MERCEDES BENZ DEALERSHIP WHERE THEY MOUNTED THE CAR AND SHOWED ME THE "FIX A FLAT" GEL COMING OUT OF THE SIDE OF THE UNDAMAGED TIRE INDICATING A CRACKED WHEEL. THEY REMOVED THE TIRE AND INFACT I HAD A CRACKED WHEEL. 4 MONTHS LATER MY FRONT DRIVERS SIDE AIR PRESSURE INDICATOR WENT OFF WHERE THE MERDCEDES DEALERSHIP CONFIRMED MY SECOND CRACKED WHEEL IN LESS THAN A YEARS TIME!
Apr 24, 2017
TIRES
4 complaints
After approx 24,000 miles and 18 months, I was told all four tires needed to be replaced and were down to between 3/32nd and 2/32nd tread left on all four tires, despite regular rotations, alignment, and overall car maintenance. These were purchased at Mavis in East Brunswick, NJ in May, 2022 and we were notified of the tread wear after a regular maintenance appointment at a Mercedes Benz dealer. I notified Mavis and came in for them to measure tread depth, which was found to be in the unsafe range. Mavis is only offering me warranty coverage, based on mileage used, of a total of $360. Obviously, this is a manufacturer defect since all four tires wore so quickly and evenly. I was told there is a 40,000 mile warranty.
Jan 15, 2024
TL* THE CONTACT LEASED A 2017 MERCEDES-BENZ C43 AMG EQUIPPED WITH PIRELLI P ZERO ALL SEASON TIRES, SIZE: P225/40/R19 (NA). ON SEVERAL OCCASIONS, THE LOW TIRE PRESSURE WARNING INDICATOR ILLUMINATED. ALSO, THE FRONT DRIVER AND PASSENGER TIRES EXPERIENCED BLOWOUTS AND CRACKED RIMS. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF NANUET (99 NY-304, NANUET, NY 10954, (845) 624-1500) TO BE DIAGNOSED, BUT NO ASSISTANCE WAS OFFERED. THE CONTACT STATED THAT BOTH FRONT TIRES WERE REPLACED ELEVEN TIMES. THE VEHICLE MANUFACTURER WAS NOTIFIED. THE TIRE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE TIRE AND VEHICLE FAILURE MILEAGE WAS 3,997.
Jan 11, 2019
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C43 AMG EQUIPPED WITH CONTINENTAL TIRES. THE FRONT TIRES WERE SIZE: 225/40/R19 93Y AND THE REAR TIRES WERE SIZE: 255/35/R19 96Y (NA). THE CONTACT STATED THAT THE SIDEWALLS OF THE TIRES WERE SO THIN THAT THE TIRES WOULD BLOW OUT WHILE DRIVING OVER SMALL POTHOLES. THE CONTACT EXPERIENCED SIX TIRE FAILURES OVER THE LAST FIFTEEN MONTHS. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF UNION (2585 US-22, UNION, NJ 07083, (908) 379-7200) AND THE TIRES WERE REPLACED AT THE CONTACT'S EXPENSE. THE TIRE MANUFACTURER ACKNOWLEDGED THE TIRE FAILURES, BUT OFFERED NO ASSISTANCE. THE MERCEDES-BENZ MANUFACTURER ALSO ACKNOWLEDGED THE FAILURES, BUT BLAMED THE CONTACT FOR NOT PURCHASING THE EXTRA TIRE INSURANCE AT THE TIME OF PURCHASE. THE MANUFACTURER INITIALLY OFFERED A DISCOUNT TO PURCHASE THE TIRE INSURANCE. THE CONTACT WAS LATER OFFERED TO END THE LEASE OF THE VEHICLE AND THE MANUFACTURER OFFERED A DISCOUNT ON LEASING OR PURCHASING ANOTHER MERCEDES-BENZ VEHICLE. THE CONTACT WANTED THE TIRES AND RIMS REPLACED WITH STANDARD 18-INCH TIRES, BUT THE MANUFACTURER REFUSED BECAUSE THE COST WAS TOO HIGH. THE TIRE LINES, DOT NUMBERS, VIN, AND TIRE AND VEHICLE FAILURE MILEAGES WERE NOT AVAILABLE.
Sep 13, 2018
I HAVE LEASED A CAR FROM THE TORRANCE MBZ ON PACIFIC COAST HIGHWAY. I HAVE HAD THIS CAR FOR ABOUT A YEAR AND A HALF AND I HAVE 12K MILEAGE ON THIS CAR. LAST WEEK I NOTICED THAT MY FRONT TIRES TREADS ARE WEARING OUT AND THEY ARE BECOMING FLAT. THEY ARE ORIGINAL TIRES. ON 11/11/17 I TOOK IT TO THE DEALER TO ROTATE THEY SAID THEY CAN'T BECAUSE THEY 2 DIFFERENT SIZES SO THEY CANT ROTATE THEM THEY GIVE ME AN ESTIMATE OF 365.00 FOR EACH TIRES TO REPLACE. I ASKED THE ASSOCIATE OF THE DEALER WHY IS THIS HAPPENING I ONLY HAVE 12K MILES. I HAVE BEEN LEASING CARS SINCE 1997 AND NEVER HAD PROBLEM WITH ANYTHING JUST NORMAL SERVICE NO TIRE PROBLEM AND THE SHOCKING THING IS THAT THE CAR HAS 12K MILES. THE MANUFACTURE FOR THE TIRES IS PIRELLI AND MY TIRE BRAND NAME IS P ZERO. I CAME HOME AND WENT TO THE PIRELLI THEY SAID IT'S NORMAL AND THEY GAVE ME A CLAIM NUMBER # [XXX] TO TAKE IT TO THE DEALER TO GIVE ME DISCOUNT. IT WAS SHOCKING TO ME WHEN THEY SAID IT'S NORMAL. I DON'T THINK SO SPECIALLY WITH THE LOW MILEAGE IF I HAD OVER 50K THEN MAYBE. LIKE I SAID I HAVE HAD CARS BEFORE AND NEVER HAD PROBLEM WITH TIRES NOR TO CHANGE ANYTHING. I AM A LITTLE TIGHT IN FINANCIAL 365.00 FOR EACH TIRES AND PLUS THE COSTS IT'S A LITTLE TOO MUCH FOR ME TO PAY. I AM FLING THIS COMPLAINT HOPING THAT YOU COULD HEAR ME AND HELP ME OUT PLEASE. THIS IS NOT FAIR SPECIALLY I AM SO DISAPPOINTED WITH THE ANSWER I GOT FROM THE PIRELLI COMPANY. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
Nov 17, 2017
ELECTRICAL SYSTEM
4 complaints
Check engine light came up for a PCV valve error. Car was driving fine with no recent changes and the repair is going to cost over 2000$.
Sep 30, 2023
TL* THE CONTACT OWNED A 2017 MERCEDES-BENZ C300C. THE CONTACT STATED THAT WHILE THE VEHICLE WAS PARKED, THEY WERE INFORMED THAT THEIR VEHICLE WAS ON FIRE. THE VEHICLE'S CONSOLE HAD CAUGHT ON FIRE. THE CONTACT STATED THE FIRE DEPARTMENT HAD PUT OUT THE FIRE. THE VEHICLE WAS DEEMED TOTALED DUE TO THE ENTIRE INSIDE BEING COMPLETELY BURNED. THERE WERE NO INJURIES. A REPORT WAS FILED BY THE FIRE DEPARTMENT STATING THAT THE FIRE WAS CAUSED BY ELECTRICAL FAILURES. THE DEALER (MERCEDES-BENZ OF STEVENS CREEK 4500 STEVENS CREEK BLVD, SAN JOSE, CA 95129; (408) 641-4610) WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THEIR VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE CONTACT STATED THAT APPROXIMATELY, TWO MONTHS AGO A FUSE LINE UNDERNEATH THE FRONT PASSENGER SEAT HAD FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED AT THE DEALER MENTIONED ABOVE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND A CASE WAS OPENED REGARDING THE MATTER. THE APPROXIMATE FAILURE MILEAGE WAS 53,000.
Nov 09, 2020
THE 2017 MERCEDES-BENZ C300 VEHICLE SUFFERED A COMPLETE LOSS OF POWER/ELECTRICS WHILE IN MOTION AT SPEED AND IN TRAFFIC, CAUSING THE VEHICLE TO UNEXPECTEDLY STOP ON TWO SEPARATE OCCASIONS. THE LOSS OF ALL ELECTRICAL SUPPLY LEAVES THE VEHICLE IMMOBILE, WITHOUT WARNING INDICATORS AND CANNOT BE MOVED. THE FIRST INCIDENT WAS AROUND 5PM IN A BUSY ROAD JUNCTION IN THE DARK, WITH LIMITED LIGHTING. AS THE VEHICLE IS BLACK COLORED IT IT IS DIFFICULT TO SEE IN THESE CIRCUMSTANCES. THE SECOND INCIDENT WAS AT ANOTHER BUSY ROAD JUNCTION IN HEAVY TRAFFIC, AT MIDDAY ON A SATURDAY. ON BOTH OCCASIONS THE POLICE HAD TO ATTEND AS THE IMMOBILIZED VEHICLE POSED A SERIOUS HAZARD WITH A RISK OF CAUSING A COLLISION TO OTHER ROAD USERS. THE APPROXIMATE TIMES TO GET THE VEHICLE REMOVED FROM THE ROAD IN THESE TWO INCIDENTS WERE BETWEEN 45 - 60 MINUTES. THE PERIOD BETWEEN THE TWO INCIDENTS WAS 11 DAYS. THE DAY FOLLOWING THEN FIRST INCIDENT, THE VEHICLE WAS INSPECTED BY A MERCEDES DEALERSHIP, WHO HAD THE VEHICLE IN THEIR POSSESSION FOR FIVE DAYS. INITIALLY THEY STATED THAT THEY HAD NOT FOUND A CAUSE FOR THE LOSS OF ALL ELECTRICAL POWER IN THE VEHICLE. SUBSEQUENTLY WHEN PRESSED ON THE MATTER, THEY STATED THE CAUSE WAS A CONNECTION PROBLEM TO THE POSITIVE TERMINAL ON THE BATTERY. IN GOOD FAITH THE VEHICLE WAS COLLECTED BY ME AND DRIVEN WITHOUT ANY APPARENT PROBLEM FOR FOUR DAYS, PRIOR TO THE SECOND INCIDENT. THE MILEAGE DRIVEN IN THAT PERIOD WAS LESS THAN 100 MILES IN TOTAL. THIS VEHICLE POSES A SERIOUS RISK TO THE DRIVER, PASSENGERS AND OTHER ROAD USERS.
Nov 25, 2019
VEHICLE HORN WILL NOT FUNCTION WHEN IGNITION SWITCH IS IN OFF POSITION.
Feb 06, 2017
SERVICE BRAKES
4 complaints
THE PARKING BRAKE WON'T RELEASE SOMETIMES AFTER DOING EVERYTHING THAT THE MANUAL AND MERCEDES BENZ RECOMMENDS. I'VE BEEN STRANDED FOR OVER 30 MINUTES. I'VE PULLED THE BRAKE RELEASE FOR OVER 10 SECONDS AND PUT THE CAR IN GEAR AND TURNED IF OFF AND ON. TWICE THE PARKING BRAKE LIGHT HAS COME ON WHEN DRIVING.
Jun 25, 2018
AT START-UP, THE PARKING BRAKE LIGHT COMES ON AND CAN'T BE TURNED OFF. THIS HAPPENED SEVERAL TIMES. THE PARKING BRAKE LIGHT COMES ON WHILE DRIVING ONE DAY AT START-UP THE BRAKE WOULD NOT RELEASE FOR 30 MINUTES WHILE TRYING VARIOUS METHODS RECOMMENDED BY MERCEDES BENZ SUPPORT AND THE OPERATORS MANUAL. THE BRAKE LIGHT HAS COME ON WHEN IT STARTS UP AND THE PARKING BRAKE COULD NOT BE RELEASED PREVENTING THE CAR FROM MOVING. ALSO THE WARNING LIGHT COMES ON WHEN DRIVING. I WILL UPLOAD A PICTURE OF THIS.
Jun 24, 2018
WHEN THE CAR IS NOT MOVING AND YOU ARE READY TO LEAVE THE CAR YOU PRESS THE POWER BUTTON TO TURN IT OFF, THE CAR "SOMETIMES" GOES INTO NEUTRAL NOT PARK AND STARTS MOVING WHEN YOU ARE GETTING READY TO EXIT THE VEHICLE, EVEN KNOWING THAT IT DOES HAVE A BUTTON FOR PARK BUTTON ON THE GEAR SHIFTER. IT SHOULD BY DEFAULT GO INTO PARK NOT NEUTRAL ALL MY OTHER CARS THAT ARE KEY LESS WHEN YOU PRESS THE BUTTON TO TURN THE CAR IT OFF GOES BY DEFAULT TO PARK REGARDLESS OF PRESSING THE PARK BUTTON ON THE VEHICLE. I HAVE EXPRESS THIS TO MB AND THEY DON'T SEAM TO BE CONCERN ABOUT THIS, SPECIALTY WHEN WE HAVE DIFFERENT VEHICLES IN THIS HOUSEHOLD THAT ALL OF THEM GO INTO PARK.
May 03, 2018
11 MONTHS OLD CAR AND AROUND 3,000 MILES - CHECK BRAKE PAD WARNING WENT OFF. WILL TAKE THE CAR TO THE DEALER TO FIX THE ISSUE.
Dec 21, 2017
ELECTRICAL SYSTEM,COMMUNICATION
2 complaints
See attached document for complaint.
Oct 16, 2025
The contact owns a 2017 Mercedes-Benz C300. The contact received notification of NHTSA campaign number: 21V058000 (Communication, Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The local dealer claimed that the manufacturer was responsible for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Jun 01, 2021
STRUCTURE,UNKNOWN OR OTHER
2 complaints
The sunroof exploded spontaneously while driving to a destination. When the incident happened, I was stopped at a red light. I panicked as it sounded like gunshots hitting my car. I pulled over to the nearest safest destination to inspect the car. This put the safety of myself at risk and others at risk who were driving along the sides and/or behind me. This incident was confirmed by a dealer, as I went to Mercedes Benz Sugar Land on the following day of the incident and was quoted around $3,700 to have it repaired. The vehicle not been inspected by police and/or insurance. There were no warning signs that this could have happened besides the fact that Mercedes Benz USA is currently under an active lawsuit for this happening to several other drivers. I do believe that this is a manufacturing defect affecting safety, as similar incidents involving Mercedes-Benz panoramic sunroofs, which may indicate a wider defect trend.
Aug 13, 2025
FRONT PANEL GLASS OF PANORAMIC SUNROOF FLEW OFF THE CAR AS I WAS DRIVING ON THE HIGHWAY.
Mar 22, 2021
STEERING,SUSPENSION
2 complaints
unknown
Apr 24, 2025
The electronic rear axle differential lock is inoperative; NHTSA previously issued a recall but I was never given a date to fix by the manufacturer.
Jun 06, 2021
FUEL SYSTEM, GASOLINE
2 complaints
The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the check engine warning light was illuminated but then disappeared. The vehicle was taken to an independent mechanic to be diagnosed. The vehicle was diagnosed with a failed actuator. The contact was informed that an actuator needed to be replaced. The vehicle was not repaired. The contact was informed of NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline) however, the VIN was not associated with the recall. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 100,000.
May 13, 2024
TL* THE CONTACT OWNS A 2017 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE THE HEATER WAS ACTIVATED, THERE WAS AN ABNORMAL FUEL ODOR COMING FROM THE VENTS INTO THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO A DEALER OR MECHANIC TO BE DIAGNOSED. THE CONTACT STATED THAT THE FUEL ODOR ONLY OCCURRED DURING THE WINTER. THE CONTACT ALSO STATED THAT THE FUEL TANK HOSE CLIP THAT GOES TO THE ENGINE BECAME LOOSE AND CAUSE THE FUEL ODOR TO PENETRATE INSIDE THE VEHICLE. THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 55,000. ## VIN PASSED ## MERCEDES-BENZ 2017C300 ##
Dec 16, 2020
VISIBILITY/WIPER
2 complaints
- windshield, and I had Satellite repair it through an insurance claim because it was urgent for my safety. - the windshield and its adhesive never bonded together making the windshield structurally unsafe and if I would have gotten into an accident then my vehicles airbags would have not deployed properly. - The issue was brought to my attention from a Satellite repair representative. - yes Safelite who contacted my insurance. - I went through a car wash and found water making its way into my car interior, which I then inspected and found that my windshield was floppy and not attached to my car and how it should.
Nov 13, 2023
CAR IS A 2017 MERCEDES C300 COUPE AND HAS HAD TO REPLACE WINDSHIELD 3 TIMES. PROBLEMS WITH WINDSHIELD CRACKING. 1ST REPAIR CAR CAME FROM DEALERSHIP WITH A LONG CRACK ON DRIVERS SIDE, 2ND CAR WAS AT SERVICE CENTER FOR 3 WEEKS TO A MONTH AND CUSTOMER CAME TO PICK UP THE CAR AND LONG CRACK ACROSS THE TOP OF WINDSHIELD. HAPPENED WHILE IN MB POSSESION
Jul 05, 2020
POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM
2 complaints
I purchased my 2017 C300 class Mercedes-Benz ("MB") in May 2021 from a used car dealership in Mobile, AL. At that time it had 36,000 miles. Less than 2 years later, on or about 12/15/22, as I was driving, the MB suddenly and without warning began to vibrate violently and immediately lost power. The car had @54,000 miles on it. I routinely drive interstate to and from work and had just gotten off of the interstate. I was lucky that I was driving at a low speed when this happened; otherwise, a serious accident could have resulted. I took it to the local MB dealership which told me that the car failed a compression test in the #1 cylinder and that the engine would have to be replaced. Subsequent research on the cause of this total engine failure with low mileage revealed that this engine has a chronic piston defect that damages the #1 cylinder, causing it to lose compression, and that MB has known about the defect for many years, an issued an internal bulletin about it. MB has not alerted the public nor instigated a recall. I was not informed by MB at any time that the C300 class engine had a chronic piston defect that would damage the #1 cylinder which would, in turn, cause the engine to lose power and the vehicle to vibrate and shake, creating a dangerous diving condition under all circumstances, but especially if the car was being driven at speed on a federal interstate highway. Despite demands by me and others, MB refuses to responsibly address the issue. The driving public is, and remains, clearly, in great risk of harm due to this defective engine and associated power train issues. It is patently unreasonable for MB to produce and market such a unsafe, dangerous and defective product that poses an unreasonable risk of harm to its customers and others when being used as it was intended. I understand that the NHTSA has opened an investigation on this defect and wish for my voice to be heard on it. Please contact me [XXX] for further details. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Jan 10, 2023
At approximately 26,500 miles of use, the check engine light came on in my Mercedes Benz C300. I brought the vehicle to the dealership and they informed me that the diagnosis was a crankcase vent valve malfunction. The MB fault code is P52E71. After paying Mercedes to fix the issue, I found forums on the internet where many other MB owners reported the same issue at around the same mileage. Being that this seems to be a common malfunction with the C300, I believe that it should be considered as a recall issue. I don't know what could have happened if I didn't service the vehicle, but any engine issue is dangerous while a vehicle is in motion.
Apr 18, 2022
UNKNOWN OR OTHER,ENGINE
2 complaints
Crankcase Breather System: Vent Valve Fault code stored for block crankcase breather valve. The fault code is 052E71. A lot of Mercedes cars are reporting it online and no recall has been made. The labor to change this takes around 8-9 hours and the part costs 300. Company is doing nothing about it as a lot of W205 engines are having this issue
Nov 09, 2022
"TAKATA RECALL" I HAD MY 2017 MERCEDES BENZ C300 FIR ONLY A FEW MONTHS AND I HAVE EXPERIENCE 4 ENCOUNTERS AS TO WHERE MY VEHICLE WOULDNT START BACK UP WHILE SITTING INSIDE OF MY VEHICLE FOR AT LEAST 2 TO 3 MINS ITS LIKE BEING LOCKED INSIDE OF MY OWN CAR EVERYTHING COMPLETELY SHUTS DOWN THE ENGINE NOR PUSH START WOULDNT WORK MY CAR IS ALWAYS PARKED FOR SMALL PERIODS OF TIME WGEN THIS INCIDENT TOOK PLACE I TOOK IT OVER TO THE MERCEDES-BENZ DEALER AND I WAS TOLD MY CAR IS NEW AND IT DOES THAT TIME TO TIME
Apr 17, 2017
ELECTRICAL SYSTEM,AIR BAGS
2 complaints
I was reversing my vehicle when I heard a snap, and the inside dash panel warning sign came on…later I google it and found out it has happened to many other people. the clock spring behind the steering wheel snapped and airbags warning signs came on with possibility of deploying at any moment.
Nov 04, 2022
TL* TAKATA RECALL. THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. THE CONTACT STATED THAT THERE WERE THREE RECALLS ON THE VEHICLE REGARDING THE AIR BAGS AND ELECTRICAL SYSTEM. THE VEHICLE WAS REMEDIED FOR AN AIR BAG RECALL; HOWEVER, THE PARTS HAD NOT BEEN AVAILABLE WITHIN A REASONABLE TIME FRAME. THE DEALER (MERCEDES-BENZ OF WEST HOUSTON, 1025 HWY 6, HOUSTON, TX 77079, (281) 492-5800) WAS UNABLE TO DETERMINE WHEN THE PARTS WOULD BE SUPPLIED FOR THE OTHER TWO RECALLS. THE MANUFACTURER WAS CONTACTED. THE NHTSA CAMPAIGN INFORMATION. THE CONTACT HAD NOT EXPERIENCED A FAILURE.
Mar 12, 2018
SEATS
2 complaints
2017 MERCEDES BENZ C43. CONSUMER WRITES IN REGARDS TO FRONT SEATBACK LOCK SAFETY RECALL. *LD *JS
Nov 18, 2019
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C43A4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 19V130000 (SEATS). THE CONTACT STATED THAT MERCEDES-BENZ OF DANBURY (LOCATED AT100 FEDERAL RD, DANBURY, CT 06810, (203) 778-6333) EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE PART WAS NOT AVAILABLE FOR THE REPAIR. THE CONTACT HAD EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.
May 14, 2019
ELECTRICAL SYSTEM,STRUCTURE,ENGINE
1 complaint
I am reporting a serious vehicle safety hazard caused by improper and unsafe repair work performed by USA Platinum Motor, located at 1221 California Lane #126B, Arlington, TX. I brought my 2017 Mercedes-Benz C300 in for a cold start rattle with no warning lights or prior issues. The shop diagnosed a loose timing chain and I authorized the repair. After the repairs, the vehicle was returned with critical safety defects, including a loose fuel pump, unsecured fuel line, missing bolts, and improperly reassembled engine components. Shortly after pickup, the car experienced loss of acceleration on the interstate, a strong odor of fuel, and a sudden loss of power, creating a dangerous and life-threatening situation. The vehicle had to be towed back to the shop. The manager, who is not a certified mechanic, admitted he personally “fixed” the issue by tightening the fuel pump himself. A Mercedes-Benz diagnostic inspection later confirmed multiple severe assembly errors, including missing fasteners, unsecured oil cooler, disconnected vent lines, and other safety-related defects in the fuel and cooling systems. These unsafe and negligent repairs created an extreme fire hazard, engine instability, and risk of sudden failure while driving. I am requesting a formal NHTSA investigation into this matter to ensure vehicle safety compliance and to prevent similar incidents affecting other consumers.
Oct 30, 2025
SUSPENSION,AIR BAGS,UNKNOWN OR OTHER
1 complaint
In October 2024, the rear subframe was replaced due to rust perforation in the area of the suspension arm mounting bracket. I had no warning. The car was in for routine service at Mercedes Benz of New London. It had rusted from the inside out and was considered unsafe to drive by the Mercedes service advisor. I could have had a serious accident! I had no choice but to replace the subframe as it is my only vehicle. Shockingly I learned many others have had this issue with various Mercedes models/years and that Mercedes Benz knows of this serious safety problem and there is a class action lawsuit pending but subframe replacement is not covered under warranty by Mercedes Benz, so the cost was mine to bear.
Jul 28, 2025
ELECTRICAL SYSTEM,UNKNOWN OR OTHER
1 complaint
The sunroof is very glitchy and this is common in all Benz I have had a few different Benz and they all eventually have this same issue with their panoramic sunroof. Sometimes it opens half way life one side is up and the other side is closed and other times it will open fully but not close and other times it won’t open at all. This is a common problem that many Benz owners have stated this in the Benz forums all over. This is a safety issue due to unexpected weather conditions if it rains and it’s stuck inside gets damage and owners get wet which is also a distraction and may cause accidents. Please investigate this issue thoroughly. Their sunroofs should be recalled and extended warranties placed on them automatically by Mercedes Benz due to this being a very common issue in all model’s panorama sunroofs particularly C300s year 2017 thank you for looking into this matter.
Jun 09, 2025
VEHICLE SPEED CONTROL,UNKNOWN OR OTHER
1 complaint
The valve for crankcase ventilation has a malfunction. The actuator is blocked Select 'Error codes / Events' menu in Engine Control Unit. Then read fault memory.
Nov 16, 2024
SEAT BELTS,FUEL/PROPULSION SYSTEM
1 complaint
small to much gas inside the cab and outside and bouth seatbelt doosent work corectly
Nov 10, 2024
ELECTRICAL SYSTEM,STRUCTURE
1 complaint
When i scan my vehicle there are Mercedes Benz fault codes pertaining to the electrical system but also recalls that haven’t been done but when looking Mercedes Benz web site and NHTSA WEBSITE these are aren’t showing up as my particular chassis being included as part of the campaign
Oct 24, 2024
AIR BAGS,SEAT BELTS
1 complaint
The contact owns a 2017 Mercedes Benz C300. The contact stated that while making a left turn at 40 MPH, another vehicle crashed into the front passenger side of the vehicle. The air bags did not deploy upon impact and the seat belt also failed to restrain the contact during the crash. Due to both failures, the contact's head and chest hit the steering wheel. The contact was taken to the hospital by ambulance and given an X-ray exam. The contact was treated for lacerations to the forehead and suffered pain to the head, neck, back, and chest. The whereabouts of the other driver were unknown. A police report was filed. The vehicle was initially towed to an independent mechanic and later back to the contact's home where it remained in the contact's possession. Neither the dealer nor the manufacturer were notified of the failure. The vehicle was not repaired. The failure mileage was unknown.
May 14, 2024
SEAT BELTS,ENGINE
1 complaint
The contact owns a 2017 Mercedes-Benz C300. The contact had received notification of NHTSA Campaign Number: 21V032000 (Seat Belts). The vehicle was taken to a local dealer and the recall repair was performed; however, upon retrieving the vehicle, the check engine warning light illuminated upon starting the vehicle. The vehicle was taken back to the dealer and remained in the dealer possession. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 34,000.
Mar 06, 2024
FORWARD COLLISION AVOIDANCE
1 complaint
Front safety system inoperable
Oct 30, 2023
ENGINE AND ENGINE COOLING
1 complaint
The contact owns a 2017Mercedes-Benz C300. The contact stated that upon having the vehicle inspected, the check engine warning light illuminated. The vehicle was diagnosed and produced code: P052E. The vehicle was then taken to an independent mechanic where it was diagnosed that the Positive Crankcase Ventilation (PCV) failed and needed to be replaced. The vehicle was repaired. The dealer and manufacturer were notified of the failure and confirmed that the VIN was not included in a recall. The failure mileage was approximately 53,000.
Aug 28, 2023
ENGINE,FUEL/PROPULSION SYSTEM,LANE DEPARTURE
1 complaint
Check engine light came on, a day after purchasing from dealer. Mileage at 55k. Check engine light code was p052e71, confirmed from 2 auto repairers. One was Mercedes Benz who quoted me $3900 to repair. In the Mercedes Benz booklet warranty says emission related repairs are covered for 15 years/150k miles for hybrid vehicles.
Aug 27, 2023
SEAT BELTS,STRUCTURE
1 complaint
The contact owns a 2017 Mercedes-Benz AMG C43. The contact stated that after the dealer performed an unknown recall repair and Honda of Newnan (391 Newnan Crossing Bypass, Newnan, GA 30265) replaced the ball joints and axles, the contact noticed that the roof panel had detached, causing the front panel to loosen, and the driver's side air bag was visible. Additionally, the front driver's side seat belt failed to retract. The dealer was made aware of the failure and referred the contact to the manufacturer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The contact related the failure to NHTSA Campaign Numbers: 21V197000 (Structure) and 21V032000 (Seat Belts) however, the VIN was not included in the recalls. The failure mileage was approximately 58,237.
Apr 07, 2023
STEERING,ELECTRICAL SYSTEM
1 complaint
When I started my car, the dash did not reveal park, drive, or reverse. It illuminated with a warning light indicating an Electronic Stability Problem (ESP). Research revealed this to be an important safety feature and that the Mercedes-warning-lights-electric-stability-control may have problems with traction control requiring attention. The ESP light was NOT flashing for the system to intervene – as the car was parked in my garage. It did not light up with the word ‘OFF’ to assess whether it may have been inadvertently deactivated. The light stayed on indicating a suddenly improperly working ESP system. The light remained on after stopping and restarting the engine several times as the dealer maintenance technician suggested concluding with my vehicle being towed to Mercedes Benz of Augusta for service. I am not sure if the MB mechanic reproduced the issue as they discussed several other potential failure points before resolving to replace an item in the steering control module. Experiencing this alert, I became more concerned that a safety inspection may not have been part of the last maintenance service. This is my third Mercedes and I make sure to keep up with all my maintenance. I had never seen this warning light before. Up until this time the only warning light I had seen in my car was for low air in my tires. My safety was not at immediate risk. I am glad my car was not able to be driven, as I would have hated for it to stop while I was out and about. I am a proud Mercedes Benz owner as they are world renown for the safest cars on the road. My car has just over 25,000 miles and it was unimaginable that it would have this kind of failure. I should not be held accountable to pay for a safety failure that I should be part of required maintenance checks. An additional periodic Mercedes required safety inspection could prevent this potential breakdown while providing another measure to protect the life of Mercedes Benz owners.
Oct 24, 2022
STRUCTURE,FORWARD COLLISION AVOIDANCE
1 complaint
Collision Assyt not operating, E brake engaged damage rear brakes and rotors
Jan 18, 2022
STEERING,UNKNOWN OR OTHER
1 complaint
I was driving on a straight away doing the speed limit which is reported seconds before the car crash. The steering wheel turned to the left really hard out of no where and wouldn’t let me gain control over the car again. I was sober it was 9am and I was aware of my driving. I ended up spinning out and landed in the ditch feet away from the light pole. I made it know to everyone what happened, but they looked at me crazy. I stopped driving that car and sent it back to Mercedes to get a detailed inspection. Which lasted about 30 days for them to get back to me about what happened. When I received the call to get my car they didn’t provide any information about the incident. Instead they just sent it to corporate and left me in the dark. I was in pain during this whole time. I was couldn’t find a lawyer that was willing to help. It’s been three years since the incident and I will have to live with pain for the rest of my life. It’s not fair that we need thousands of dollars to be heard. I have all communication and documentation that was given during the time of incident.
Oct 26, 2021
SUSPENSION,ELECTRICAL SYSTEM,UNKNOWN OR OTHER
1 complaint
The car was parked on my driveway, As soon as i started it, I got a message 'The electronic rear axle differential lock is inoperative' NHTSA previously issued a recall for 2017 C63s AMG models. I purchased this vehicle from Carvana in April 2021 with clean single owner carfax. The manufacture warranty has expired. I have seen lots of posts on Mercedes forum talking about this issue where Mercedes did fix the issue free of cost. Since there is no open recall on my vehicle, I am not sure what to do.
Sep 26, 2021
ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE
1 complaint
Light came on tonight and stayed on, Collinsion prevention assist inoperable. Car has been involved in any collision for this system to quit out of the blue
Aug 21, 2021
STEERING,ELECTRICAL SYSTEM,UNKNOWN OR OTHER
1 complaint
SO I JUST GOT MY MERCEDES BENZ C300 4MATIC I ONLY HAVE 44,711 MILES ON IT AND I BARELY DRIVE IT, SO TODAY I WAS DRIVING AND THE WHOLE DAY THINGS WERE GREAT AND I STOPPED AT A STORE GOT BACK IN AND IT SAYS 'POWER STEERING MALFUNCTION' I WAS ON A STREET IN THE CITY, I'M ON CONFUSED ON HOW THIS IS HAPPENING TO A CAR I JUST GOT FROM THE DEALERSHIP THAT IS PRACTICALLY NEW, NOW LET ME MENTION THAT THIS IS A ON AND OFF ISSUE THROUGH OUT THIS WHOLE DAY IT HAS CAME ON AND OFF TWICE
May 07, 2021
WHEELS,UNKNOWN OR OTHER
1 complaint
DOCUMENTATION ERRORS AND OMISSIONS MISINFORMATION REGARDING PROPER REPLACEMENT WHEEL. THIS MISINFORMATION COULD RESULT IN WHEELS WITH IMPROPER FIT BEING INSTALL POTENTIALLY RESULTING IN ABNORMAL HANDLING, DIMINISHED BRAKING PERFORMANCE AND IN EXTREME CASES POSSIBLE SEPARATION OF THE WHEEL FROM THE VEHICLE AT HIGH SPEED. MERCEDES PARTS WEB SITE, HTTPS://MBPARTS.MBUSA.COM, LISTS PARTS 205-401-11-00-7X23 FRONT AND 205-401-12-00-7X23 REAR AS THE PROPER REPLACEMENT WHEELS. THE SELLING DEALER, MERCEDES-BENZ OF FLEMINGTON, NJ INSISTS THAT THESE ARE NOT THE PROPER WHEELS BUT PARTS 205-401-48-00-7X23 FRONT AND 205-401-72-00-7X23 REAR ARE THE PROPER WHEELS. ALL THESE WHEELS ARE AVAILABLE FROM NUMEROUS RESELLERS. PURCHASING AND INSTALLING THE HTTPS://MBPARTS.MBUSA.COM LISTED WHEELS COULD RESULT IN THE AFOREMENTIONED SAFETY ISSUES.
Apr 09, 2021
SUSPENSION,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM
1 complaint
CAR IS MAKING WEIRD NOISES FROM THE FRONT ELECTRICAL AC SIDE- IT IS HARD TO BREATH AC AIR (SMELL LIKE PLASTIC) . PRESSING BRAKES CAR IS HANDLING BAD AND GOES SLIGHTLY INTO OTHER LANE. I TOOK CAR TO DEALER- THEY COULD NOT FIND THE PROBLEM
Mar 27, 2021
POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
1 complaint
WHEN THE CAR IS IN THE A FEATURE, WHERE IT TURNS ON AND OFF WHEN NOT IN MOTION, IT GETS STUCK IN THAT MODE AS IF A MAGNET IS HOLDING IT IN THAT POSITION. IT WILL NOT MOVE, IT STALLS. I TURN IT OFF AND TURN IT BACK ON AND SOMETIMES IT STILL WILL NOT MOVE, SOMETIMES, IT WILL NOT TURN BACK ON. THIS HAS HAPPENED ON SEVERAL DIFFERENT OCCASIONS. ONCE, I PULLED TO THE SIDE OF MY MAILBOX TO PICK UP MAIL, AND ANOTHER OCCASION I PULLED INTO MY GARAGE, AND IT STOPPED, AND WOULD NOT TURN ON. THIS IS VERY DANGEROUS, I WOULD HATE TO BE IN TRAFFIC, RAILWAY CROSSING, IR STOP SIGN AND THIS OCCURRED. PEOPLES LIVES HAVE BEEN LOST DUE TO THIS ISSUE. ONE LADY WAS HIT BY A TRAIN WHEN THIS SAME SITUATION OCCURRED AND LOST HER LIFE. I AM VERY CONCERNED FOR MY SAFETY AND OF MY GRANDKIDS WHOM I TRANSPORT IN THIS CAR. IT ALSO SEEMS THAT SOMETHING IS WRONG WITH THE GEARS. SOMETIMES, I PUT IT IN REVERSE AND IT SITS THERE. I PUT IT IN DRIVE AND IT WILL NOT MOVE. I FEEL VERY UNSAFE IN THIS VEHICLE. PLEASE HELP.
Mar 13, 2021
ELECTRICAL SYSTEM,ENGINE,VISIBILITY/WIPER
1 complaint
PISTON 1 CRACKED AT 48,000 MILES. MB TOLD OWNER THAT THE ENGINE HAD TO BE REPLACED BUT WHEN FINDING OUT THAT THE WARRANTY WAS UP AT 50,000 THEY REPLACED THE PISTON INSTEAD. CAR IS STILL SHAKING AT IDLE AND ROUGH RIDE. ENGINE SHAKES AND JERKS.
Jul 05, 2020
STEERING,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL
1 complaint
TL* THE CONTACT OWNED A 2017 MERCEDES BENZ C43 AMG. THE CONTACT STATED THAT WHILE DRIVING AT 63 MPH IN THE RAIN, LOSS CONTROL OF THE VEHICLE AS IT SLED TO THE LEFT AND CRASHED INTO THE GUARD RAIL. THE INCIDENT OF MARCH 12TH DID NOT FEEL LIKE I HAD HYDRO-PLANNED. THE CONTACT STATED THAT SEVERAL WARNING LIGHTS ILLUMINATED SUCH AS AIR BAGS FAILURE, SHOCK FAILURE, SUSPENSION FAILURE AND TRACK FAILURE. THERE WERE NO INJURIES AND NO POLICE REPORT WAS FILED. THE VEHICLE'S DRIVER'S SIDE WAS DAMAGED UNDER THE FRONT BUMPER AND THE FRAME WAS DAMAGED BEYOND REPAIR. THE VEHICLE WAS TOWED TO AN AUTO BODY REPAIR FACILITY WHERE THE CONTACT WAS INFORMED THAT THE STEERING WAS EXTENSIVELY DAMAGED AND A FAILURE CAUSE COULD NOT BE DETERMINED. THE CONTACT RESEARCHED THE FAILURE ON-LINE AND BELIEVES THAT THE ELECTRIC STEERING WAS DEFECTIVE AND MAY BE A CAUSE OF THE FAILURE. THE CONTACT MENTIONED THAT THE VIN WAS NOT INCLUDED IN A RECALL FOR ELECTRICAL STEERING. DURING THE INSPECTION OF THE VEHICLE BY PENSKE AUTO COLLISION CENTER, THE TECHNICIAN COULD NOT TELL IF THE STEERING DAMAGE WAS SUSTAINED DURING THE COLLISION OR AS A RESULT OF A DEFECT. THEY ALSO FOUND DAMAGE TO THE REAR DRIVE UNIT ALTHOUGH, AS VERY VISIBLE IN THE PHOTOS, THE VEHICLE STRUCK THE BARRIER WITH THE FRONT LEFT (DRIVER'S SIDE) PORTION OF THE FRONT BUMPER. THE REAR OF THE CAR NEVER SLAMMED INTO THE BARRIER BUT DID SCRAPE ALONG THE DRIVER'S SIDE MOMENTARILY BUT THERE WAS NO IMPACT. THE COLLISION CENTER COULD NOT ACCOUNT FOR THE DAMAGE TO THE REAR DRIVE UNIT. IN RESEARCH, I FOUND A FEW MENTIONS AND COMPLAINTS OF THE REAR AXLE DISENGAGING WHICH COULD CAUSE LOSS OF CONTROL. THE VEHICLE WAS TOTALED BY THE CONTACT'S INSURANCE COMPANY. THE DEALER AND MANUFACTURER HAD BEEN CONTACTED. THE FAILURE MILEAGE WAS 32,000. *DT*JB
Mar 24, 2020
AIR BAGS,VEHICLE SPEED CONTROL,SERVICE BRAKES
1 complaint
ON MARCH 8, 2018 MY VEHICLE HAS BEEN INVOLVED IN AN ACCIDENT. WHILE DRIVING TO A MEETING THE RIGHT REAR WHEEL OF THE VEHICLE LOCKED UP SENDING THE VEHICLE INTO A 360-DEGREE SPIN. ALL SAFETY FEATURES IN THE VEHICLE FAILED. NO BRAKES, NO AIRBAGS DEPLOYED ON IMPACT. ON OR AROUND OCTOBER 21ST OF 2018. MY VEHICLE IS INVOLVED IN A SECOND ACCIDENT. THE CIRCUMSTANCES OF THE VEHICLE ARE IDENTICAL. WHILE ON MY WAY TO A MEETING THE RIGHT REAR WHEEL GOT LOCKED WHICH SENT THE CAR INTO A 360-DEGREE SPIN. BRAKES, STABILITY CONTROL FAIL, THE CAR ACCELERATED WHILE APPLYING BRAKES, AIR BAGS FAILED TO DEPLPOY ON IMPACT. AFTER THE ACCIDENT I REQUESTED MBUSA TO DISPATCH A SOFTWARE ENGINEER TO HAVE THE ONBOARD ELECTRONICS EXAMINED FOR A POSSIBLE DEFECT. MBUSA ALONG WITH THE MANUFACTURER ARE REFUSING TO HAVE AN ENGINEER SENT. THE DEALERSHIP IS ENGAGED IN DECEITFUL TACTICS IN THEIR COMMUNICATIONS WITH MBUSA LLC. THE DEALERSHIP HAS LIED MULTIPLE TIMES TO MBUSA STATING I AM NOT SHOWING UP TO PRESCRIBED MEETINGS. I HAVE SHOWED ON TIME ON THE DATE THE MEETINGS WITH THE ENGINEER WAS SUPPOSED TO TAKE PLACE AND HAVE A WITNESS. ON THE NIGHT OF THE SECOND ACCIDENT THE VEHICLE WAS BROKEN INTO TWICE. THE DEALERSHIP STAFF HAVE CHANGED THE RIGHT REAR TIRE ON THE VEHICLE TO MAKE IT APPEAR AS THOUGH IT WAS THE TIRE'S FAULT. THE PURCHASE RECEIPT FOR THE TIRE AND THE DOT NUMBERS DO NOT MATCH THE DOT NUMBER CURRENTLY ON A TIRE REPLACED BY THE STAFF. MBUSA ALLEGES IT IS THE TIRES FAULT WITHOUT PROVIDING ANY SCIENTIFIC FACT BASED EVIDEMCE. A YEAR AN A HALF LATER THE ISSUE IS NOT RESOLVED AND EVERYONE IS POINTING FINGERS AT EACH OTHER.
Feb 29, 2020
STRUCTURE,VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC)
1 complaint
SUDDEN ACCELERATION AFTER PULLING VERY SLOWLY INTO PARKING SPACE. ALMOST STOPPED. CAR SUDDENLY ACCELERATED, JUMPED A CURB FROM, WENT UP AN EMBANKMENT AND HIT A TREE. WAS ABLE TO REVERSE AND BACK DOWN. IT WILL TAKE A MONTH FOR BODY WORK. NOTIFIED MERCEDES DEALER. THEY WILL RUN DIAGNOSTICS ON JAN. 7.
Dec 02, 2019
ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM
1 complaint
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. WHEN THE CONTACT STARTED THE VEHICLE WITH THE MOBILE APP, SHE NOTICED A FUEL ODOR EMITTING FROM THE VEHICLE. WHEN THE VEHICLE WAS STARTED MANUALLY, THE ODOR WAS NOT PRESENT. THE CONTACT TOOK THE VEHICLE TO PARK PLACE MOTORCARS DALLAS (LOCATED AT 6113 LEMMON AVE, DALLAS, TX 75209, 877-475-5033) WHERE IT WAS DIAGNOSED THAT THE FUEL HOSE WAS LEAKING AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 55,000.
Nov 12, 2019
STEERING,POWER TRAIN,ELECTRICAL SYSTEM
1 complaint
ON 7/30/18 I WAS STRANDED IN THE MIDDLE OF THE STREET AFTER THE COOLANT MALFUNCTION LIGHT CAME ON. THE CAR BEGAN OVERHEATING, AND THERE WAS NO AC. I WAITED FOR ROADSIDE ASSISTANCE MORE THAN 3 HOURS. I WAS INFORMED OF THE INCORRECT POSITIONING OF THE ALTERNATOR FROM MANUFACTURING, WHICH RESULTED IN MULTIPLE LIGHTS ON CLUSTER. THEY FOUND THE ENGINE BELT FELL OFF & REPLACED THE V-BELT. THEY PERFORMED LI13.22-P-060187, AND RELEASED STRESS OF ALTERNATOR AND CORRECTED TORQUE. THEY ALSO WORKED ON A CAMPAIGN/RECALL (#2018070005) I HAD NOT BEEN INFORMED OF. ON 3/15/19 DURING THE SCHEDULED 20K SERVICE, THEY TESTED BATTERY TEST CODE WITH CABIN FILTERS WIPERS AND BRAKE FLUID SERVICE AND PERFORMED A VEHICLE INSPECTION. ON 3/19/19, 4 DAYS AFTER THE SCHEDULED 20K SERVICE, I WAS STRANDED IN THE MIDDLE OF US1 DURING RUSH HOUR TRAFFIC ON MY WAY TO WORK. THE COOLANT LIGHT CAME AGAIN. THANKFULLY, I SAFELY AVOIDED AN ACCIDENT AFTER THE CAR TURNED OFF IN THE MIDDLE OF THE STREET. THE REPORT SHOWED A WEAK CRANK & BATTERY MESSAGE ON THE CLUSTER DISPLAY. THEY TESTED THE BATTERY AND FOUND CODE HR250BT-DAD4LFB STATING, 'REPLACE BATTERY'. THEY REMOVED A0019820208 DATE 45/16 AND INSTALLED A0019829108 DATE 03/18. THE DRIVE BELT HAD COME OFF THE DRIVE SYSTEM & FOUND LI13.22-P-060187, WHICH STATED THEY NEEDED TO PERFORM AN ALIGNMENT PROCEDURE OF THE ALTERNATOR AND INSTALLED A NEW BELT FOR THE 2ND TIME. THE BELT ACTUALLY CAUSED DAMAGE TO THE TENSIONING DEVICE, WHICH RESULTED IN THEM REPLACING THE TENSIONER, AND PERFORMING THE INSTRUCTION FOR LI. THEY TEST DROVE THE CAR & SAID IT WAS FIXED. ON 4/4/19, JUST 3 DAYS AFTER PICKING UP MY CAR, IT TURNED OFF ON MY AGAIN IN THE MIDDLE OF US1. THE BATTERY LIGHT CAME ON AND A MESSAGE POPPED UP STATING THAT THE SYSTEM WOULD SHUT DOWN IN 3 MINUTES. I WAS LUCKY ENOUGH TO AVOID AN ACCIDENT ON A CONGESTED ROAD.
Apr 24, 2019
AIR BAGS,SEAT BELTS,STRUCTURE
1 complaint
I HIT A BEAR IN MONTANA IN MY 2017 MERCEDES C300 AT 86MPH AND DESTROYED THE FRONT OF MY CAR. THE SEATBELTS DEPLOYED AND WRENCHED US INTO OUR SEATS AND SMOKE CAME OUT OF THE FRONT AIR VENTS BUT THE AIRBAGS DID NOT GO OFF. ON THE DASH THE VEHICLES STATED THAT THE AIRBAGS IN ALL 4 ZONES IN THE CAR MALFUNCTIONED AND SERVICE IS REQUIRED. MERCEDES IS STATING THAT THE LIGHT IS FROM A SEATBELT ERROR CODE BUT THE DASH DID NOT SAY ANYTHING ABOUT SRS OR SEATBELTS. I DO NOT WANT TO PUT MY FAMILY BACK IN THE CAR AND DO NOT FEEL IT SHOULD BE REPAIRED. PLEASE SEE ATTACHED PHOTOS OF THE ERROR MESSAGES ON THE DASH. I DO NOT KNOW HOW I CAN HIT SOMETHING THAT HARD AND NOT HAVE THEM DEPLOY. MERCEDES IS DOING AN INTERNAL INVESTIGATION BUT THEY HAVE NOT GIVEN ME THE RESULTS OF THAT AND IT HAS BEEN OVER 3 WEEKS. VEHICLE WAS IN FOR A AIRBAG RECALL NOT TAKATA RELATED ON JANUARY OF 2018 AND THIS WAS SUPPOSED TO HAVE BEEN REPAIRED.
Jul 18, 2018
ELECTRICAL SYSTEM,AIR BAGS,UNKNOWN OR OTHER
1 complaint
SINCE I BOUGHT IN FEBRUARY 2017 BRAND NEW 2017 MERCEDES BENZ C300 CONVERTIBLE IN ONE YEAR OF OWNERSHIP I HAD TO BRING MY CAR SEVERAL TIMES FOR SERVICES LIKE, THE CONVERTIBLE TOP WOULD NOT WORK, THE MIRRORS WOULD NOT FOLD, THE STEERING WHEEL WOULD NOT ADJUST, ELECTRONICAL ISSUES LIKE CONNECTING MY CELL PHONE TO THE CAR. ( I HAD THE TOP GOT REPLACED ONLY AFTER COUPLE OF MONTHS AFTER I PURCHASED THE CAR.) TODAY APRIL 27 2018 I COULD NOT START THE CAR IN THE MORNING TO GO TO WORK, THE DISPLAY WAS SHOWING THE KEY IS NOT DETECTED( HAD TO EXIT THE CAR COUPLE OF TIMES, WITH THE KEY AND TRY AGAIN TO START THE CAR UNTIL IT FINALLY WORKED).HAD MY TOP OPEN WHILE WAS DRIVING TO WORK AND ONCE PARKED THE TOP WOULD NOT CLOSE, AND AGAIN HAD TO EXIT THE CAR LOCK UNLOCK AN TRY AGAIN COUPLE OF TIMES BEFORE IF FINALLY CLOSED. I DID RECEIVE A LETTER SAYING THAT THE CAR WAS DEFEFECTED, AND THAT THE AIRBAG ON THE DRIVERS SEET MAY NOT WORK, I'LL ATTACH THE LETTER ( BROUGHT FOR SERVICES) BUT IT'S SEEMS THAT THEY DIDN'T FIX THE PROBLEM. ALSO THE TIRE PRESSURE EVERY COUPLE OF WEEKS IT'S LOW, AND THE DISPLAY WOULD SHOW SOMETIMES THAT THE SEET IS NOT FIRM OR STEADY. I BOUGHT A BRAND NEW CAR TO FEEL SAFE AND DO NOT FEEL THAT WAY.
Apr 27, 2018
VISIBILITY,STRUCTURE
1 complaint
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. WHILE DRIVING APPROXIMATELY 35 MPH, THE GLASS MOON ROOF SUDDENLY EXPLODED, CAUSING GLASS TO ENTER THE CABIN OF THE VEHICLE. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF LOVELAND (4040 BYRD DR, LOVELAND, CO), BUT THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 9,000.
Mar 20, 2018
ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM
1 complaint
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300W. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED MERCEDES-BENZ OF BEVERLY HILLS AT (310) 659-2980 (9250 BEVERLY BLVD, BEVERLY HILLS, CA 90210) WHERE IT WAS CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER WAS NOTIFIED AND WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT. *TT *TR
Jan 12, 2018
ELECTRICAL SYSTEM,AIR BAGS,SEAT BELTS
1 complaint
TAKATA RECALL SEATBELT ISSUES WARRANTY ITEMS /ELECTRICAL NO RESPONSE FROM DEALER AFTER REPEATED EMAILS
Dec 10, 2017
POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC),ENGINE
1 complaint
THE CAR ENTERS LIMP MODE IN THE HIGHWAY WHERE IT LOOSES ALL THE POWER AND WARNING POPS UP AS ACTIVE BRAKE ASSIST IS INOPERATIVE, TRACTION CONTROL LIGHTS COME ON AS WELL. IF YOU MANAGE TO GLIDE THE CAR TO A STOP AND RESTART THE CAR, THE CAR STARTS TO BACK UP AS NORMAL. TOOK THE CAR FOR SERVICE SEVERAL TIMES, INTAKE AIRFLOW SENSOR WAS REPLACED BUT THE CAR STILL HAS THE SAME ISSUE. UPON SEARCHING ONLINE, THIS IS A VERY WELL KNOWN ISSUE WITH THE NEWER MECEDES CARS WHERE THE CAR GOES INTO A SAFETY MODE WHERE THE ENGINE CUTS ALL THE POWER TURNING THE SITUATION INTO A EVEN MORE DANGEROUS SCENARIO. AS PART OF THE SAFETY MODE, IF THE CAR LOOSES ALL THE POWER, THEN THERE IS FEW THINGS THAT CAN BE DONE TO COME OUT OF IT. THIS IS A MAJOR SAFETY CONCERN AS REPEATED OCCURENCE OF THIS PROBLEM HAS THE ABILITY TO CAUSE A SEVERE ACCIDENT.
Nov 26, 2017
ELECTRICAL SYSTEM,EXTERIOR LIGHTING
1 complaint
THE WIRES TO THE OUTSIDE LIGHT FIXTURES ARE MELTING. THE EXTERIOR LIGHT BULBS ARE MELTING INTO THE SOCKETS AND THE LIGHT ASSEMBLY MUST BE REPLACED IN THEIR ENTIRETY. THIS OCCURRED MULTIPLE TIMES ON 3 DIFFERENT LIGHT ASSEMBLIES: SPRING 2013, SPRING 2016 AND NOVEMBER 2017.
Nov 10, 2017
AIR BAGS,UNKNOWN OR OTHER
1 complaint
WHILE DRIVING THE CARE, I NOTICED THE SEAT BELT LIGHT REMAINED ON DESPITE BEING BUCKLED AND THE PASSENGER AIR WAS NOT SET DESPITE MY WIFE SITTING IN THE SEAT. I FOUND THIS ODD, CONTACTED THE DEALERSHIP FOR SERVICE AND RESEARCHED IF THE CAR HAD A RECALL...THIS CAR DID HAVE A RECALL AND WAS SOLD WHILE IN ACTIVE RECALL STATUS. FEDERAL LAW EXPLICITLY PROHIBITS DEALERSHIPS FROM SELLING A NEW CAR IF A PENDING RECALL HASN'T BEEN PERFORMED. AS, A RESULT, I NO LONGER WANT THIS CAR BECAUSE THE CAR SHOULD NOT HAVE BEEN SOLD UNTIL THE RECALL WAS PREPARED. BUT, MORE SO BECAUSE THE REMEDY TO REPAIR THIS CAR IS NOT UNTIL MARCH OF 2017.
Oct 30, 2017
Frequently Asked Questions
How many problems does the 2017 MERCEDES-BENZ C-Class have?
The 2017 MERCEDES-BENZ C-Class currently has 248 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.
What are the most common problems with 2017 MERCEDES-BENZ C-Class?
The most common problems reported for the 2017 MERCEDES-BENZ C-Class are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.
Where does this 2017 MERCEDES-BENZ C-Class problem data come from?
All problem and complaint data for the 2017 MERCEDES-BENZ C-Class comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.
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