2017 MERCEDES-BENZ GLC-Class Problems & Complaints
Real owner complaints and problems reported to the National Highway Traffic Safety Administration (NHTSA). View common issues by component.
VIN Decoder
112
Complaints Reported
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Complaints by Component
ENGINE
20 complaints
-The malfunctioned component is the Positive Crankcase Ventilation. - Vehicle wanted to stall and did not want to accelerate while in the middle lane on the highway with my family. - Yes it has been diagnosis by certified mechanic - The check engine light turned on at the time of the incident and has been turning on and off ever since.
Apr 16, 2025
I was driving and my engine light came on. I ran the code and it came up as P052E which has to do with the positive crankcase ventilation regulator valve. I’ve heard that this part goes out very often on the Mercedes Benz.
Mar 28, 2025
Car stalled in traffic due to code P052E PCV regulator valve
Mar 18, 2025
Check Engine light came on. Mercedes Benz authorized service mechanic confirmed it is code P052E - Positive Crankcase Ventilation regulator valve issues that can cause engine to seize while driving. Vehicle has always been serviced regularly at authorized dealer service center. Current estimated Repair and replacement cost $9,700+ . Mercedes Benz authorized Service Center informed that the part is backordered and no estimated date available.
Mar 03, 2024
Engine light. Told by Mercedes mechanic it is a code P052E - positive crankcase ventilation regulator valve issues that can cause engine to seize while driving. Repair cost $2,500+
Feb 29, 2024
+ 15 more complaints for this component
FUEL/PROPULSION SYSTEM
10 complaints
Strong gasoline smell coming from the engine bay every morning at start up. I removed protective plastic lining from the under carriage to identify the issue. I identified a lot of gasoline dripping from the top portion of the engine compartment where the High Pressure Fuel Pump is located. There was no warning or check engine lights that alerted of this issue of a gasoline leak. This is very dangerous as it could cause the vehicle to catch fire.
Dec 18, 2024
Smell of gas
Jan 16, 2024
CRANKCASE VENT VALVE PCV ENGINE LIGHT ON AIR POLLUTION DANGER STALLING DANGER
May 07, 2023
Defective crackcase vent valve
Oct 08, 2022
The fuel line leaks directly under the driver seat. Filling the cabin with fuel vapors. Mercedes has an extended warranty for this problem but only on vehicles from 2004 to 2009.
Feb 25, 2022
+ 5 more complaints for this component
UNKNOWN OR OTHER
10 complaints
Sunroof just exploded
Apr 26, 2024
P052E code showing on the diagnostic machine. This is an issue with the positive crankcase ventilation regularly valve. I’ve read that this is a common issue with my vehicle that often happens after the warranty expires.
Sep 08, 2023
vent valve po52e71 - I have found thousands of the same issue with my car online. Mercedes covers this piece as an emission piece for Deisal Engine but not gas engines. This peice needs to be recalled and covered under emissions warranty asap.
Feb 01, 2023
The Panoramic roof glass exploded suddenly. Throwing shattered glass pieces on the Highway and into the cabin of the car. No object or environmental conditions caused this incident. It just exploded while driving ~ 50mph
Dec 18, 2022
The Crank Ventilation code is showing up for a code and this has been happening to all of these GLC coupes. The check engine light comes on.
Aug 27, 2022
+ 5 more complaints for this component
ELECTRICAL SYSTEM,ENGINE
7 complaints
VEHICLE SHUT OFF ON BUSY HIGHWAY. ENGINE SHUT OFF. ELECTRICAL/ COMPUTER SYSTEM MALFUNCITONED. VEHICLE WOULD NOT START BACK UP AGAIN
Oct 29, 2018
TL* THE CONTACT OWNS A 2017 MERCEDES BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED WESTMINSTER MERCEDES BENZ DEALER, LOCATED ON 10391 WESTMINSTER BLVD, WESTMINSTER, CO 80020, WHERE IT WAS INFORMED THAT THE RECALL WAS PENDING AND THE REMEDY PART WAS NOT AVAILABLE FOR THE REPAIR. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PART NOT AVAILABLE.
Aug 21, 2017
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. 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. ZT MOTORS IN FORT WALTON BEACH, FLORIDA WAS CONTACTED ABOUT THE RECALL TWICE AND STATED THAT THE PARTS WERE UNAVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
Aug 09, 2017
TL* THE CONTACT OWNS A 2017 MERCEDES BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) HOWEVER, THE PART FOR THE RECALL REPAIR WAS UNAVAILABLE. THE CONTACT STATED THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT HAD NOT EXPERIENCED ANY FAILURE. THE CONTACT CONTACTED THE MERECEDEZ BENZ OF FLORENCE DEALER WHO INFORMED THE CONTACT THAT THE PARTS FOR THE REPAIR WERE NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND INFORMED THE CONTACT THAT PARTS WERE NOT AVAILABLE AND THE VEHICLE WAS SAFE TO USE. VIN TOOL CONFIRMS REMEDY NOT YET AVAILABLE.
Jul 24, 2017
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) EXCEEDED A REASONABLE AMOUNT OF TIME FOR REPAIR. THE CONTACT RECEIVED THE RECALL NOTIFICATION IN MARCH OF 2017. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
Jul 14, 2017
+ 2 more complaints for this component
VISIBILITY
5 complaints
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving approximately 30 MPH, the first panel of the panoramic sunroof went off track and failed to close as intended. The contact stated that while inspecting the vehicle, the panoramic sunroof glass was pushed down firmly, and the sunroof closed. The contact attempted to open the sunroof, but the sunroof failed to operate as intended; however, the contact heard a motorized sound coming from the sunroof. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 70,000.
Nov 12, 2025
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that on several occasions while opening the sunroof, the contact heard an abnormal grinding sound. Additionally, the contact stated that the sunroof failed to close as intended. The vehicle was taken to a dealer where it was diagnosed and determined that the sunroof rails needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 82,000.
Jun 18, 2025
The driver mirror and passenger mirror are warping or having some type of melting effect happening to it.
Jun 03, 2025
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving at an undisclosed speed, the front roof panel between the windshield and sunroof detached from the vehicle. The vehicle was not taken to the dealer and was not repaired. The contact became aware of NHTSA Campaign Number: 17V715000 (Visibility) however, the VIN was not included. The manufacturer was made aware of the failure. The approximate failure mileage was 68,000. Warranty on the car has expired and was told consumer would have to pay for it. Rep said she would talk to other people to see what can be done but she is not making any promises.
Jun 02, 2022
The contact owns a 2017 Mercedes Benz GLC300. The contact stated while driving approximately 55 mph, suddenly there was a loud sound and vibration coming from the vehicle. After stopping the vehicle, it was discovered that sections of the panoramic roof had separated and dislodged from the vehicle. The vehicle was taken to the local dealer who indicated that the vehicle was included in the NHTSA recall campaign number 21V197000 (Structure) however, the part needed to repair the vehicle was not yet available. The manufacturer was notified of the failure. The failure mileage was 62,000.
May 20, 2021
AIR BAGS
5 complaints
Airbag front message
Nov 06, 2025
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT STATED WHILE ATTEMPTING TO MAKE A U-TURN, SHE HEARD AN ABNORMAL SOUND. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE CONTACT STATED THE FOLLOWING DAY, SHE NOTICED THE STEERING WHEEL FEATURES INCLUDING THE HORN AND AIR BAG WERE INOPERABLE. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER HOFFMAN LEXUS (750 CONNECTICUT BLVD, EAST HARTFORD, CT 06108, (860) 525-3987) AND THE DEALER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER NEW COUNTRY MERCEDES-BENZ (1 WESTON ST, HARTFORD, CT 06120, (860) 278-2000) WHERE IT WAS DIAGNOSED WITH NEEDING THE CLOCK SPRING TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED AS OF YET. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 60,000.
Feb 10, 2021
I HAD AN ACCIDENT AND REARENDEAD ANOTHER CA. HOWEVER MY AIRBAGS DIDN'T DEPLOYED.
Sep 21, 2020
TL* TAKATA RECALL. THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS). 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 DEALER (KEENAN MOTORS, 3664 N EASTON RD, DOYLESTOWN, PA 18902) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER WAS CONTACTED AT 770-705-0600, BUT THE CONTACT DID NOT RECEIVE A RESPONSE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
Jan 05, 2018
TL* TAKATA RECALL. THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 17V627000 (AIR BAGS) EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE REPAIR. THE CONTACT RECEIVED THE RECALL NOTIFICATION IN OCTOBER OF 2017. THE DEALER (EURO MOTORCARS BETHESDA, 7020 ARLINGTON RD, BETHESDA, MD, 20814, 301-986-880) STATED THAT THE PARTS WERE UNAVAILABLE FOR THE REPAIR. THE MANUFACTURER CONFIRMED THAT THE PARTS WERE UNAVAILABLE FOR THE REPAIR. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
Dec 11, 2017
ELECTRICAL SYSTEM
4 complaints
Odometer Fraud. The contact purchased a 2017 Mercedes-Benz GLC43 AMG. The contact stated that while reviewing a Carfax report, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 74,000 and at the time of registration, it was discovered that the mileage was 140,000.
May 13, 2025
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle was able to be restarted. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the battery. The vehicle was repaired, but the failure reoccurred. The vehicle was taken to the dealer, who then diagnosed a failure with the alternator. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
Jun 21, 2024
The last time I drove my vehicle was Monday [XXX] which that day it was raining. I covered my car with my car cover that day because I don't use my vehicle often and being that it was raining I covered it and my vehicle was fine on this day. On Monday [XXX] it was raining as well, I took off my car cover off and when we opened the trunk of the vehicle we noticed that the trunk was wet including the bag to my car cover. We also noticed from the trunk opening that the vehicle had some spots of mold and there was also mold spots on the back of the seat right side of vehicle. I had an appointment at Mercedes Benz dealership in Portland Oregon to change my transmission & engine oil. As I drove the vehicle to the dealership for my appointment my daughter and I noticed drops of water falling on us and we didn't have our windows open because it was raining. The water was coming from the sunroof area and the sunroof wasn't open. We kept driving until we got to the dealership and once we got there we noticed that the back seats were also wet and the right side back seat had a few spots of mold on the seatbelt. We left the vehicle at the dealership. Today Wednesday [XXX] the dealership is stating that because the sunroof is used so much the parts in that area due to wear and tear it's no longer working properly. They are charging my daughter 500.00 for a water test that they did to the top of the sunroof and for changing the seals the the sunroof and the back of the trunk they are charging I believe an additional 736.00. I feel that there is something wrong with the sunroof this vehicle. My daughter only drove it for about one year and in May 2018 I became the only driver of this vehicle and to be honest I don't even open the sunroof at all. The dealership is stating that it will cost approximately 15,000.00 to fix this problem and if not considering this vehicle a total loss. We are going to be contacting our insurance and see what happens. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Jan 31, 2024
I pressed the "Park" button, but the transmission did not go into park. When I let my foot off the break, thinking that I was in Park, the car started rolling backwards. Thank God my wife was in the car and noticed the motion and shouted to me to break the car. I was able to stop the car before hitting anybody or anything, but it was dangerously scary.
Jun 27, 2022
SEAT BELTS
4 complaints
The seat belt latch in the second seating row, the outboard seatbelt latch plate retracted into the area between the c-pillar paneling and the rear side paneling. The rear occupant was not be able to fasten the seat belt latch. The latch plate retracted behind the panel and the seat belt for the affected rear seat was not be available for fastening. I was able to grab the latch plate with a pliers and bring it out from behind the panel but I am afraid this situation will occur again. I checked my VIN against you checker and it says NO RECALL is pending. I assume MB did not include this VIN in its report to you or falsely claimed the vehicle was repaired. reference # 2018030012, May 2018
Nov 28, 2023
While driving vehicle, the seat belt pretensioner is activated and the seat belt light and alarm is activated. This cycle occurs throughout the drive, regardless of speed. Seems as though the seat belt latch does not sense that the seat belt is activated. This is very distracting to the driver. We reported the issue to the dealership, but have not heard anything since the report. This problem occurs on and off, randomly. May occur for a week straight, then stop for a day or two, then start again.
Sep 30, 2022
WHILH E DRIVING WITH A PASSANGER IN THE FRONT SEAT, AND PROPERLY BUCKELED UP. THE PASSENGER SEAT BELT WILL RANDOMLY TIGHTEN UP AND THE SEAT BELT LIGHT WILL FLASH ON THE DASHBOARD AND THE SEAT BELT AUDIBLE BELL WILL SOUND, THIS WILL LAST FOR A FEW MINUTES AND THEN STOP FOR A FEW MINUTES THEN START AGAIN. I WENT TO THE DEALER AND GOT THE EARLIEST APPOINTMENT TO GET IT FIXED WHICH IS OVER 30 DAYS AWAY (7-26-22), I ASKED WAS IT STILL SAFE TO DRIVE THE SUV AND WAS TOLD TMHEY BELIVED IT WAS OK BECAUSE IT SOUNDED LIKE A SEATBELT LATCH ISSUE, I HAVE DISCIVERED THERE IS A RECALL FOR THIS PROBLEM BUT NOT MY MODEL YEAR
Jun 23, 2022
WHEN THE VEHICLE IS IN MOTION(VARIOUS SPEED, 1 TIME AT HIGHWAY, 2 TIMES LOCAL STREETS), THE FASTEN SEATBELT LIGHT AND AUDIBLE WARNING CAME ON. ALSO, AT THE SAME TIME, THE SEATBELT TENSIONS (PULLS). THE DRIVER SEATBELT WAS FASTENED THE WHOLE TIME WHILE THIS WAS HAPPENING. *TR
May 29, 2020
STEERING
4 complaints
2017 Mercedes Benz GLC 300 Coupe 27,700 miles. I was driving on MD I-95 when the Power Steering Malfunction warning light came on and I lost power steering. I got off the next exit. Steering was very difficult especially when the car slowed. The Mercedes Benz dealer is replacing the electronic steering power control unit, power steering motor and steering rack. Cost $4910. Mercedes Benz has had GLC 300 recalls for Power Steering Malfunction but not for my model year.
Jan 08, 2023
The steering column has stopped moving up/down. I guess due to some latency build up (after having tried to adjust the steering a few times prior to the drive) caused the steering to move down (one time incident) while driving and caused momentary loss of steering control due to slippage and had to pull over to the shoulder of the freeway. While this was a one time incident it could become a safety issue...this seems to be a rampant issue (up/down movement getting jammed) on all MB vehicles and anything related to critical vehicular controls should be flagged as such.
Dec 11, 2021
TRAVELING 60 MPH ON INTERSTATE, WHEN STEERING WHEEL JERKED TO THE RIGHT AND THEN LEFT, BRAKES AUTOMATICALLY ACTIVATED, AND SEAT BELT TIGHTENED. LASTED FOR APPROXIMATELY 3 MILES, THEN JERKING STOPPED. WITHIN ANOTHER 30 MILES HAPPENED 3 MORE TIMES. EACH TIME AN ALERT APPEARED ON DISPLAY 'BLIND SPOT ASSIST IS DEACTIVATED, NOT OPERATIONAL'. STOPPED AND HAD CAR WASHED TO REMOVE ANY DEBRIS FROM SENSORS, BUT PROBLEM PERSISTED. HAPPENED AGAIN TODAY, 5/2, AT 45 MPH ON PUBLIC HIGHWAY. CRUISE CONTROL WAS NOT ENGAGED WHEN THESE INSTANCES OCCURRED. TERRIFYING! I HAD TO FIGHT THE WHEEL TO KEEP CONTROL.
May 02, 2020
TL* THE CONTACT OWNED A 2017 MERCEDES-BENZ GLC300. WHILE DRIVING BELOW 40 MPH, THE VEHICLE VEERED TO THE LEFT AND CRASHED INTO A TREE. THE CONTACT DID NOT NOTICE IF THERE WERE ANY WARNING INDICATORS ILLUMINATED BEFORE OR AFTER THE CRASH. THE AIR BAGS DEPLOYED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE CONTACT WAS INJURED AND REQUIRED MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS DEEMED TOTALED BY THE INSURANCE COMPANY; THEREFORE, THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER AND DEALER WERE NOT NOTIFIED OF THE FAILURE. THERE WERE NO RECALLS ASSOCIATED WITH THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS LESS THAN 1,000.
Mar 05, 2018
VISIBILITY/WIPER
3 complaints
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving at an undisclosed speed, the windshield wiper blades detached. The contact stated that the vehicle was purchased new in 2017. The contact stated that whenever it rained and the wipers were activated, the wiper blades would detach and flop over the front windshield. The contact stated that the vehicle had been taken to the dealer several times and the wiper blades had been replaced several times; however, the failure was persistent. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 500.
Mar 18, 2024
WINDSHIELD WIPERS STUTTER ON WINDSHIELD AND MALFUNCTION. THIS JITTERING ACROSS THE WINDSHIELD IMPAIRS VISIBILITY. WINDSHIELD IS NOT KEPT CLEAR, EVEN WITH NEW BLADES. WINDSHIELD CLEANERS ALSO PLUG UP CONTINUALLY MAKING WASHING THE WINDSHIELD WHILE DRIVING IN AREAS WHICH CREATE VISIBILITY PROBLEMS DUE TO DUST, BUGS, ETC....IMPOSSIBLE -- EVEN IF CLEANER FLUID TANK IS FULL. THE ENTIRE SYSTEM IS AN ISSUE. MERCEDES KNOWS THIS IS A PROBLEM. THE SUV HAS BEEN IN FOR REPAIR 4 TIMES SINCE PURCHASING LAST OCTOBER. THEY HAVE REPLACED IT EACH TIME, SAY THEY KNOW THERE IS A PROBLEM, AND SAY THEY WILL NOT REPLACE IT AGAIN. THEY SAY THAT NON-MERCEDES WINDSHIELD WIPER FLUID IS A PROBLEM (BUT THE FIRST 3 TIMES, THE FLUID WAS ORIGINAL MERCEDES FLUID). THEY SAY PUTTING THE VEHICLE IN A CAR WASH IS PROHIBITED -- A RIDICULOUS COMMENT. WHO DOESN'T PUT THEIR SUV IN A CAR WASH? THE MECHANISM IS FAULTY AND MERCEDES WON'T TAKE RESPONSABILITY AND IT IS A SAFETY PROBLEM.
May 30, 2018
WE WERE DRIVING DOWN THE FREEWAY, TRAVELING APPROXIMATELY 65 MPH IN OAKLAND, CA. THE WEATHER WAS CLEAR - NO RAIN AND APPROXIMATELY 60 DEGREES. ALL OF A SUDDEN, THERE WAS A LOUD NOISE LIKE A GUNSHOT AND OUR PANARAMIC SUNROOF SHATTERED. AT THE TIME, WE HAD A CARGO BOX ON TOP OF THE CAR (ON A FRAME THAT WAS NOT TOUCHING THE SUNROOF) SO IT IS UNLIKELY ANY PROJECTILE COULD HAVE HIT THE CAR. THE CARGO BOX WAS STILL AFFIXED TO THE CAR AND SECURE AFTER THE INCIDENT. IT WAS NOT AN EXTREME TEMPERATURE, NOR WAS THERE ANY EXTREME WEATHER (RAIN, SNOW, HAIL) AT THE TIME. THERE WERE NO UNDERPASSES NEARBY. MOST OF THE GLASS WAS CAUGHT BY THE SUNSHADE, BUT IF WE HAD THE SUNSHADE OPEN, THE GLASS WOULD HAVE ENTERED THE PASSENGER COMPARTMENT. WE HAVE OWNED THE CAR APPROXIMATELY TWO WEEKS AT THIS TIME.
Feb 06, 2017
SERVICE BRAKES
3 complaints
BOUGHT CAR 3 DAYS AGO AND BRAKES SQUEAL UPON BACKING OUT OF GARAGE AND SOMETIMES APPLYING WHEN STOPPING! SPECIFICALLY ASKED SALESMAN IF MERCEDES HAD PROBLEMS WITH BRAKES MAKING NOISE AS WE WENT THROUGH THIS WITH A VW TOUREG AND WAS TOLD NO THEY DO NOT HAVE THIS PROBLEM. CALLED SALESPERSON TODAY AND WAS INFORMED NOW THAT THEY ARE AWARE OF THIS ISSUE AND ITS NORMAL AND SHOULD ONLY HAPPEN WHEN CAR HAS BEEN SITTING AND ITS COLD OR THEY GOT WET. TOLD IF IT GOES MORE TIMES THAN THAT BRING INTO SERVICE???? VERY DISAPPOINTED WE WERE BOLD FACTLY LIED TO AND NOW HAVE ANOTHER CAR THAT APPEARS TO HAVE BRAKE NOISE ISSUES.
Dec 22, 2018
I PURCHASED A MERCEDES GLC 300 2017 IN SEPTEMBER IN DELRAY BEACH AND WHEN I APPROACHED 3500 BREAKS STARTED TO SQUEAL. I TOOK THE CAR IN AND THEY SAID THEY WOULD ORDER NEW BREAKS. THIS WAS 2 MONTHS AGO AND NOTHING HAS HAPPENED YET NO FIXES AND THEY WEREN'T EVEN AWARE THAT MANY CONSUMERS HAD COMPLAINED PREVIOUSLY. THEY KEEP GIVING ME THE RUN AROUND THAT THE PARTS ARE COMING FROM GERMANY ETC. I BET YOU IF THEY WERE TRYING TO SELL A CAR THEY WOULD HAVE BROUGHT THAT CAR FASTER THAN MY BREAKS. CAR IS STILL SQUEALING AND WAITING FOR A FIX. MERCEDES SLOGAN IS THE BEST OR NOTHING ELSE ?! WELL..... DEFINITELY NOT THE BEST EXPIRIENCE.
Mar 02, 2017
REFER TO 2016 GLC-300 COMPLAINTS ABOUT SCREECHING SERVICE BRAKES AND COPY/PASTE COMPLAINTS HERE. 2017 MODEL HAS THE SAME SCREECHING NOISES AND CAR WAS PURCHASED IN AUGUST 2016. GOING SLOWLY IN REVERSE OR FORWARD FROM COLD START WILL CAUSE LOUD SCREECHING NOISES. MY NEIGHBORS HAVE CONFRONTED ME ABOUT THE CAR NOISES. IT'S ABSURD THAT THE DOCUMENTED ISSUES FROM THE 2016 MODEL CONTINUES IN THE 2017 MODEL. DEALERS ARE AWARE AND HAVE SAID APPLYING BRAKE PASTE DOES NOT HELP. A LARGER FIX IS STILL IN THE WORKS. THE NOISE IS ALSO MAKING US ATTEMPT TO BACK OUT OF THE DRIVEWAY WITH AS LITTLE BRAKING AS POSSIBLE. AFTER DRIVING A FEW MILES THE SCREECHING WILL MOSTLY STOP. THERE HAVE BEEN OTHER OCCASIONS WHEN IT HAS NOT--LIKELY DUE TO WET OR COLD WEATHER CONDITIONS. AS OF 12/29/2016, DEALER IS SAYING A NEW FIX MAY BE COMING 1/5/2017. I AM HOPEFUL BUT WEARY AND WILL PROCEED WITH LEMON LAW PROTOCOLS. *TR
Dec 29, 2016
POWER TRAIN
2 complaints
The Valve body control failed. I took the car into the dealership but upon doing some searching this seems to be a common issue amongst owners of this vehicle/make model. The transmission won't go beyond 5th gear (of 9) so it's is dangerous to drive on the interstate. The car doesn't shift into drive, only shifts into N, the reverts automatically to park. It required the engine shutting on/off multiple times and only then does it go into 3rd gear, causing the vehicle to jump due to missing gears. This issue could leave an owner stranded at any time and cause injury due to the limitations of the gears. It was inspected and confirmed behavior by Mercedes in Durham NC. There were no warning lamps, there were no signs of the issue. The technician did plug it in and was able to read the fault codes but it didn't trigger a light. The appeared first about 45 days ago, and the vehicle was taken in to be looked at 7/21/25.
Aug 12, 2025
One morning I was driving the GLC-300 about 45 mph, when suddenly the car went from 45mph to 0 in 3 seconds. The car stopped and it would not move forward. The car was towed to the Mercedes Benz dealership and it was discovered that front differential was broken. The car has 55k original miles and it's maintained very well. There was no warming light on the dashboard to indicate this problem. If the car was traveling at speed of 55 or 65 mph, it could have caused a catastrophe. This is very unusual for front differential to break. This needs to be investigated by NHTSA and I'm sure there are other customer that run into this issue. Since the car out of manufacture warranty, Mercedes Benz covered the cost of the part, but I had to pay for the labor which was a lot. The dealership admitted that it was unusual for the front differential to break specially for Mercez Benz car.
Apr 07, 2023
ELECTRICAL SYSTEM,UNKNOWN OR OTHER
2 complaints
My vehicle goes into neutral while driving which poses a major risk.
Jun 28, 2025
VEHICLE KEY-LESS ENTRY LOCKED OUT THE DRIVER AND PASSENGER WITH KEYS INSIDE THE VEHICLE WHILE PARKED. TALKED TO OTHER MERCEDES GLC300 OWNERS AND THEY ARE EXPERIENCING SAME ISSUE. THIS HAPPENED LATE AT NIGHT WITH MY WIFE AND 7 YEAR OLD DAUGHTER IN A HIGH CRIME AREA WHILE I WAS OUT OF TOWN. MERCEDES ROADSIDE ASSISTANCE CHARGED US $99.95 TO UNLOCK VEHICLE. THIS IS A LIFE THREATENING DEFECT AND SHOULD BE ACKNOWLEDGED AND ADDRESSED BY MERCEDES IMMEDIATELY.
Oct 18, 2017
POWER TRAIN,AIR BAGS,SEAT BELTS
2 complaints
Vehicle has previous recalls done and still has the same issues with recall. Srs code no air bag will deploy. Dealer ship refused to service vehicle due to miscommunication and I'm driving a defective vehicle without an airbag which could lead to a bad accident waiting to happened. I will like to file a complaint against Mercedes of Richmond for refusing to service my vehicle without a defective air bag and the passenger seat bear latch doesn't retract properly. So I'm currently dealing with 2 huge safety hazard and was denied service due to a miscommunication with Steven Powers (service technician) at Mercedes of Richmond! I will like an investigation done.
Jun 11, 2025
No incident my vehicle has a front left malfunction service required light and issues with the passenger seatbelt not proper latching. Upon checking I notice my car had previous recalls done. It seems as if the same issues has come about. NHTSA: 18v177- seat belt not retracting properly. NHTSA: 17V627 is related to the steering column switch replacement of clock spring. So if me or a family member was to get into an accident no airbag will deploy! Huge safety hazard!
Jun 04, 2025
FUEL SYSTEM, GASOLINE
2 complaints
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while operating the vehicle, the fuel gauge provided incorrect information and indicated that there was no fuel in the fuel tank. The contact stated that the failure was intermittent and sometimes occurred immediately after refueling. The vehicle was taken to the local dealer who diagnosed the vehicle and determined that the fuel tank needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 55,000. The VIN was not available.
Jan 22, 2025
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that she detected an abnormally strong fuel odor after parking the vehicle, and while starting the vehicle. 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 70,000.
May 23, 2024
POWER TRAIN,ENGINE
2 complaints
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed, however, the vehicle failed to accelerate as intended. In addition, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed with a failed positive crank valve. The contact was informed that the positive crank valve needed to be replaced. In addition, the contact was informed that the repair was covered under an extended warranty program, however, the parts were on backorder. The vehicle was not repaired. The contact stated that the failure began in December 2023, however the warranty repair was completed in September 2024, due to parts being on back order. The vehicle was repaired, however, the failure reoccurred. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed, however, the vehicle failed to accelerate as intended. In addition, the contact heard a loud boom that came from the engine. The vehicle was taken to the dealer where it was diagnosed with a blocked turbo. The contact was informed that the turbo needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 94,000.
Oct 15, 2024
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while at a stop light, the vehicle independently shifted to neutral(N) for approximately 5 minutes. The vehicle failed to release from neutral when the driver shifted the gear shifter. The contact stated that the transmission then released from neutral(N), and the vehicle jolted forward. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who was unable to determine the cause of the failure. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 75,000.
Jun 20, 2024
TIRES
2 complaints
I previously submitted a problem My #11606217 I found out that these tires (2nd set replacement due to tread low within 7 months) I am very concerned that due to the DOT # on these tire is 0119 (last four) which is 5 years old I do not feel safe to travel on tires that is 5 yeas old The original purchase was January 2024. They were replaced (due to tread worn) with these tires August 2024 What is the timeframe for tires purchased I purchased 2 tires previously (front) from the Mercedes dealer 2 years ago and the DOT# is 4622 Please let me know if these tires are safe for long distance
Sep 08, 2024
On [XXX], I purchased 2 Brand New Tires for my vehicle from (Howie's Tires (No. Miami Fl) This company is a DBA Walter James Investments LLC These tires was to be placed on the rear and moved the rear tire (Mercedes) to the front On [XXX], the passenger front tire (Mercedes) blow out due to a nail I was towed along with my vehicle to Howie's to purchased another tire to replace the passenger front. I have always purchased my tires from Mercedes-Benz (Ft Lauderdale, FL) I was told by a mechanic (July 31, 2024) that I would soon need rear tires due to the tread was very low These tires were not 7 months old. I DONT UNDERSTAND I contacted Renzo at Howie's I went in on August 1, 2024 to let them see this. He said also said the tread was low. Another guy (maybe the manager) came out. He started telling me the those were not their tire also I had them rotated. He wanted me to pay for a another tire and he give me one. I said no to his accusations. Today, August 2, 2024, I had these tire installed. I asked them was their a DOT number that should be on my receipt he said no to both times. I was told there is and I will like you to look into this for me. Well after a lot of going back and forth he agreed to replace them I submit this form to find out if the tires that was replaced (for purchased January 24)and the passenger front tire (purchased? is indeed brand new Run Flat tires Please let me know the DOT number Thanks so much INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Aug 02, 2024
ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM
2 complaints
After noticing my engine light come on, I had my vehicle checked out, the dealer informed (after spending $250.00) that the problem is the crankcase ventilation and it's a common problem. It seems the oh so familiar crankcase ventilation system is not working. This is a common problem with the GLC300 and Mercedes Benz needs to correct it. The engine is not being ventilated properly and the overwhelming smell of gasoline engulfs the interior of the vehicle. This is putting mine and the life of my family at risk, due to a faulty manufacturer issue. Mecedes Benz needs to obviously correct the faulty parts they use as soon as possible, before someone loses their life.
Jan 03, 2024
Odometer reading more miles then driven (may have been tampered with altered) There is an electrical issue The computer required to be reprogrammed has not been done yet While driving the vehicle completely stop accelerating in the middle of traffic on the interstate placed my life in danger especially because traffic was moving rapidly the vehicle was jerking horribly also several codes came on when the service light came on also needed a pcp vale hose system they never repaired it i asked to have it repaired they agreed and then stated the vehicle had to many issues was sending to auction but yet reselling the vehicle still have not repaired completely this could be dangerous
May 03, 2023
ENGINE,FUEL/PROPULSION SYSTEM
2 complaints
The Positive Crankcase Ventillation harness fails and check engine light goes on. Through my research I found that many C class and GLC class with same engine have had similar issues and there was a recall and covered. My particular VIN was not included in the recall but had this check engine warning sign before 50K miles warranty expires. The light always went away but now it has come back on for the third time and not going away. The cost to replace this simple module is mostly labor at 8 hours is around $2,000. I believe this is an emission component and need to be covered under state and federal emission standards warranty. The initial recall with this issue should be involved with same engine and cover all cars and SUV's with same engine. I do believe this is an Emission control device that is regulated by state and federal standards and should be covered under warranty.
Aug 17, 2023
1. CRANKCASE VENTILATION VALVE PERFORMANCE FAILED CHECK ENGINE LIGHT IS ON WHILE DRIVING 2. SMELLS GAS FROM UNDER THE HOOD. HEARD IT'S COMMON PROBLEMS
Feb 24, 2021
STRUCTURE
2 complaints
THE PANORAMIC SUNROOF EXPLODED OUTWARD. I WAS DRIVING AT HIGHWAY SPEED. THIS IS THE SECOND TIME THAT THIS HAS HAPPENED ON THIS VEHICLE
Jun 14, 2020
EXPLODING PANORAMIC SUNROOF: WHILE DRIVING ABOUT 40MPH ON ROUTE 35SOUTH (MIDDLETOWN, NJ) IN 30 DEGREE WEATHER AT 7:30PM ON 5FEB2018 THE FORWARD PANEL OF THE PANORAMIC SUNROOF EXPLODED. THERE WERE NO OTHER CARS AROUND ME. IT WAS A LOUD POP EXPLOSION. THE SAFETY GLASS LOOKS PUSHED OUT AND GLASS STARTED TO FLY BEHIND THE CAR ONTO THE ROAD. I PULLED ONTO THE SHOULDER AND I CONTACTED MERCEDES HELP LINE FOR ASSISTANCE. THEY TOLD ME TO TAKE THE CAR TO THE NEAREST DEALER (MY LOCAL DEALER CONTEMPORARY MOTORS IN LITTLE SILVER, NJ). I DID A NIGHT DROP BOX DROP OFF. MERCEDES IS NOW ACCESSING THE ROOF.
Feb 06, 2018
SEAT BELTS,AIR BAGS
1 complaint
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving on several occasions at various speeds, the front passenger’s side seat belt retractor failed to extend or retract as intended and became stuck. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. Additionally, the contact stated that on several occasions while started and running, the message “Service Soon” was displayed. The vehicle was taken to a dealer where it was diagnosed and determined that the clock spring needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 120,000.
Jun 02, 2025
VISIBILITY,TIRES,ENGINE
1 complaint
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken back to the dealer and the contact was informed that the vehicle was repaired. The contact stated that the dealer had only reset the codes. In addition, the contact stated that the tire pressure sensor warning light was illuminated. The contact stated that the sunroof latch failed to close as needed using the sunroof power switch. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 88,100.
Nov 21, 2024
ELECTRICAL SYSTEM,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE
1 complaint
Error message of collision prevention assist inoperable. Mercedes dealer wants $400 to look at it only.
Mar 17, 2024
UNKNOWN OR OTHER,ENGINE
1 complaint
Premature failure of the PCV assembly at 70,000 miles. Caused vehicle to turn off and sometimes engine to shake.
Aug 14, 2023
VISIBILITY,SEATS
1 complaint
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while activating the front windshield wipers, the wiper blades started scratching the front windshield. The vehicle was taken to the dealer and the front windshield was replaced. The contact stated that the failure occurred several times before the failure was corrected. On another occasion while entering the front driver side door, the contact became aware that the extended bar in the seat had protruded through the seat cover. The vehicle was taken to the dealer and the contact was informed that the front driver’s side seat needed to be replaced. The vehicle was repaired but the contact stated that the failure had occurred several times before the failure was corrected. On another occasion, the contact became aware that there was fluid leaking from the vehicle. The contact examined the vehicle and notice that the windshield washer fluid was leaking from the washer fluid reservoir. The vehicle was taken to an independent mechanic and was informed that the windshield washer fluid reservoir needed to be replaced. The contact was advised to contact the local dealer. The vehicle was taken to the dealer who stated that the vehicle needed to be diagnosed. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the dealer. The failure mileage was 32,831.
Aug 08, 2023
FORWARD COLLISION AVOIDANCE
1 complaint
Collision prevention assist inoperative. Car at local Mercedes dealer. Told that a $317 software update was required to make system operative again. I do not understand how it is ethical for a corporation to alter their software, make a safety system inoperative, and the ask the customer to pay to make system operative again via a software update. This is unethical, a significant safety concern and just wrong. Thank you, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Feb 20, 2023
ENGINE AND ENGINE COOLING,ENGINE
1 complaint
The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving approximately 55 MPH, she detected white smoke coming from the tailpipes. There were no warning lights illuminated. The contact was able to pull over. The vehicle was towed to the local dealer who placed a camera inside the engine and noticed that the piston had fractured and detached inside the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was contacted but no additional assistance was provided. The approximate failure mileage was 88,000.
Oct 20, 2022
AIR BAGS,FORWARD COLLISION AVOIDANCE
1 complaint
TL* THE CONTACT OWNS A 2017 MERCEDES BENZ GLC300. THE CONTACT STATED THAT WHILE HIS WIFE WAS DRIVING APPROXIMATELY 40 MPH, THE VEHICLE CRASHED INTO A 2ND VEHICLE. DURING THE CRASH THE FRONT END WAS SEVERELY DAMAGED BUT THE AIR BAGS DID NOT DEPLOY. ALSO, THE COLLISION AVOIDANCE SYSTEM MALFUNCTIONED AND DID NOT STOP THE VEHICLE TO AVOID THE COLLISION. THE DRIVER SUSTAINED BRUISES TO THE TORSO AREA WHICH REQUIRED MEDICAL TREATMENT. AN OCCUPANT FROM THE 2ND VEHICLE WAS TRANSPORTED TO THE HOSPITAL BY AMBULANCE. NO FURTHER INFORMATION WAS AVAILABLE. A POLICE REPORT WAS TAKEN AT THE SCENE AND THE VEHICLE WAS TOWED AWAY. THE LOCAL DEALER MERCEDES BENZ OF HUNTSVILLE (6220 UNIVERSITY DR. HUNTSVILLE, AL) AND THE MANUFACTURER WERE NOTIFIED OF THE INCIDENT. THE CAUSE OF THE FAILURES WERE NOT DETERMINED. THE FAILURE MILEAGE WAS 25,000.
Jul 08, 2020
SERVICE BRAKES,ENGINE
1 complaint
SINCE THE LEASE PURCHASE IN 2017. THE GLC300 HAS BEEN IN SERVICE ON A QUARTERLY BASES FOR THE BRAKES (CONSTANT SQUEAKING MAKING FEEL UNSAFE) AND NOW A CONSTANT CHECK ENGINE LIGHT. THIS IS THE 4TH VEHICLE I LEASE AND BY FAR THE WORST. I CONTACTED MERCEDES USA ASKING THEM FOR A REPLACEMENT VEHICLE. I WAS WILLING TO ACCEPT A USED OR LOANER CAR BUT THE ONLY THING THEY OFFERED WAS $1000 TOWARDS MY NEXT VEHICLE. AS OF TODAY, THE VEHICLE IS BACK IN SERVICE FOR THE 7TH OR 8TH TIME. I AM HOPING SOMEONE CAN HELP OR AT LEAST PREVENT THIS FROM HAPPENING TO SOMEONE. I HAVE ATTACHED ALL PAPERWORK FOR YOUR REVIEW. THANK YOU
Jan 19, 2019
AIR BAGS,SEAT BELTS,SEATS
1 complaint
WHEN THE VEHICLE IS IN MOTION, OR STILL, THE DRIVER'S SIDE COVER FOR THE SEATBELT/AIRBAG WILL NOT STAY ATTACHED. THIS IS LOCATED ON THE DRIVER'S SEAT AND IS VISIBLE WHEN ENTERING AND EXITING THE CAR. I AM NOT REALLY CONCERNED ABOUT THE COSMETIC ISSUE AS MUCH AS THE SAFETY ISSUE. WITH THE SIDE IMPACT AIRBAGS, THIS IS A SAFETY HAZARD. IF THE BAG DEPLOYS WHO KNOWS WHAT WILL HAPPEN TO THE FLOATING PART? WILL THE AIRBAG, OR SEATBELT EVEN DEPLOY, OR WORK AS IT SHOULD? THIS IS ALSO A SAFETY ISSUE BECAUSE YOU CAN BE INJURED BY THE HARD PLASTIC THAT IS HANGING THERE. THE PIECE CAN ALSO GET CAUGHT UNDER OUR FEET WHILE DRIVING AS IT DOES NOT STAY IN PLACE. I REPORTED THIS THE 3RD DAY AND HAD IT REPAIRED 3 OTHER TIMES. I HAVE HAD MY CAR AND IT HAS BEEN IN PLACE ONLY 5 DAYS IN 2 YEARS, 2 MONTHS AND 30 DAYS. THE NEW LOANER THEY GAVE ME HAD THE SAME ISSUE AND THE PORTERS REPORT THEY NEVER STAY ON. THE CAR WAS IN FOR SERVICE FOR THIS ISSUE 4 TIMES IN THE FIRST 20 MONTHS I OWNED IT. IT COULD HAVE BEEN WEEKLY IF I WOULD HAVE NOT JUST LIVED WITH IT IN BETWEEN SERVICES THAT WERE NEEDED AND TAKEN IT IN AGAIN FOR SERVICE AND THE ISSUE.
Nov 15, 2018
SUSPENSION,ELECTRONIC STABILITY CONTROL (ESC),ENGINE
1 complaint
对不起我说中文， 我的英语不好 我这辆车有安全辅组问题 有一次突然发动机熄火然后静止了几秒 然后我又从新启动，还有发动机有噪音，我已经拿去4S店维修了4次 还是问题重复出现。我现在不想浪费时间去4S 点了 每次都要浪费我很久的时间。 MANUFACTURER RECALL NUMBER2018030012 NHTSA RECALL NUMBER18V177 RECALL STATUSRECALL INCOMPLETE
Jul 18, 2018
EXTERIOR LIGHTING
1 complaint
THE THREE LEVERS LEFT OF THE STEERING WHEEL CONTROLLING WIPERS (BOTH FRONT AND REAR) ADJUSTMENT OF THE STEERING WHEEL, AND CRUISE CONTROLS DO NOT ILLUMINATE IN THE DARK/EVENING. AS A RESULT, THE DRIVER IS DISTRACTED FROM VIEWING THE ROAD AHEAD IN AN ATTEMPT TO IDENTIFY THE NEEDED ACTIONS FOR OPERATION. THE DEALERSHIP STATES THAT MY VEHICLE IS MADE THIS WAY.
Mar 13, 2018
STEERING,LANE DEPARTURE
1 complaint
THE LANE KEEPING ASSIST AND/OR LANE BRAKING ASSIST WILL VIOLENTLY MOVE THE VEHICLE UNASSISTED BY DRIVER ONTO ACCESS ROADS THE DRIVER EXPECTS THE VEHICLE TO MAINTAIN ITS POSITION OF THE HIGHWAY AND NOT TO VIOLENTLY TURN ONTO ACCESS ROADS.. IT IS PARTICULARLY UNSAFE ON 75 AND 85 MPH SPEED LIMIT HIGHWAYS. REQUIRES DRIVER TO VIOLENTLY JERK WHEELER BACK TO THE HIGHWAY BEING TRAVELED UPON. CALLS DIRECTLY TO MERCEDES INDICATE NO INTEREST IN THE PROBLEM AND SOFTWARE INVOLVED AND LOCAL DEALERS EITHER WILL NOT SET UP APPOINTMENTS FOR INSPECTION OR/AND INDICATE THEY CANNOT CORRECT THE SOFTWARE OR SENSITIVITY OF DETECTORS ON RIGHT SIDE OF CARE. THE ONLY WAY TO AVOID THIS IS ON A 4 LANE HIGH BY STAYING IN THE CENTER PASSING LANE A LANE AWAY FROM EXITS.
Feb 04, 2018
AIR BAGS,SERVICE BRAKES
1 complaint
REAR BRAKING SYSTEM. WHEN BACKING UP OR APPLYING PRESSURE TO THE BRAKES, THE VEHICLE IS SCREAMING A LOUD NOISE. TAKEN BY DEALERSHIP AT 7000 MILES 01/04/18 DEALERSHIP STATES THEY CAN'T FIX IT UNTIL THEY RECEIVE PARTS ,WITH THE TAKATA RECALL AND A FAULTY BRAKING SYSTEM, THIS IS A HIGHWAY SAFETY ISSUE.
Jan 20, 2018
STRUCTURE,UNKNOWN OR OTHER
1 complaint
TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC43. WHILE DRIVING, THE CONTACT NOTICED A SQUEAKY NOISE AROUND THE DASHBOARD AREA WHILE DRIVING OVER BUMPS IN THE ROAD. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF ROCKVILLE CENTRE (650 SUNRISE HWY, ROCKVILLE CENTRE, NY 11570 (516) 766-6900) WHERE NO DIAGNOSTIC FAILURE CODES WERE FOUND AND THE FAILURE COULD NOT BE REPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE AND A TECHNICIAN WAS SENT TO MERCEDES-BENZ OF ROCKVILLE CENTRE, BUT THE FAILURE COULD NOT BE REPLICATED. THE CONTACT STATED THAT ADHESIVE WAS PLACED ON THE DOOR. THE VIN AND FAILURE MILEAGE WERE UNAVAILABLE.
Sep 26, 2017
POWER TRAIN,VEHICLE SPEED CONTROL
1 complaint
I HAVE EXPERIENCED RECURRENT BUT INTERMITTENT ISSUES WITH THE TRANSMISSION/ACCELERATION OF MY MERCEDES GLC 300 2017. TODAY, AFTER I WENT UP AND THEN DOWNHILL, THE CAR SLOWED DRAMATICALLY ON ITS OWN. WHEN I PUSHED THE GAS PEDAL TO THE FLOOR, THE CAR DID NOT RESPOND IMMEDIATELY. AFTER SEVERAL SECONDS, THE CAR STARTED TO ACCELERATE. IN THE MEANTIME, I WAS WORRIED I WOULD BE REAR-ENDED BY TRAFFIC BEHIND ME. I HAVE HAD SIMILAR PROBLEMS IN THIS SAME SPOT (WHICH I DRIVE NEARLY DAILY) IN THE PAST, SUGGESTING GOING OVER THE HILL HAS SOMETHING TO DO WITH IT (E.G., ONCE, IN THIS SPOT, WHEN MY DAUGHTER WAS IN THE CAR WITH ME, THE CAR JERKED SO STRONGLY WHEN IT STARTED TO GO THAT MY DAUGHTER THOUGH WE WERE INDEED REAR ENDED). ALTHOUGH THIS SPOT MOST OFTEN REVEALS THE PROBLEM, THE ISSUE HAS HAPPENED ON FLAT AREAS AS WELL. FOR INSTANCE, PULLING OUT OF A SHOPPING CENTER, I SIMILARLY FOUND THE ACCELERATOR NON RESPONSIVE. DRIVING MY DAUGHTER TO TENNIS ONE DAY, THE CAR REPEATEDLY JERKED DRAMATICALLY WHEN SHIFTING, PRIMARILY IN 2ND AND 3RD. GENERALLY, THE ISSUES SEEM TO HAPPEN MOST FREQUENTLY IN THESE GEARS. ALTHOUGH THE TRANSMISSION SEEMS TO CONSISTENTLY TAKE LONGER TO SHIFT IN THESE GEARS, THE MORE DRAMATIC PROBLEMS DO NOT HAPPEN DAILY, MAKING IT HARD TO TROUBLE SHOOT (WHEN I TOOK IT TO MY DEALER, THEY RAN THEIR COMPUTER TESTS, AND COULD NOT DETECT ANY PROBLEMS). I AM WORRIED, THOUGH, THAT I WILL EVENTUALLY BE REAR ENDED OR OTHERWISE HAVE THIS PROBLEM LEAD TO AN ACCIDENT. I HAVE SEEN SOME OTHER REPORTS OF THIS ISSUE IN ONLINE FORUMS, AND HOPE NHTSA CAN CHECK INTO OR AT LEAST TRACK IT.
Apr 11, 2017
ELECTRICAL SYSTEM,STRUCTURE,ENGINE
1 complaint
"TAKATA RECALL" MY 2017 MERCEDES GLC 300 SUV CAUGHT RANDOMLY ON FIRE WHILE DRIVING 65 MPH ON THE FREEWAY. I WAS ABLE TO PULL ON THE SIDE.THEN WHILE ON THE PHONE DESCRIBING THE SITUATION TO THE SERVICE GUY; I SAW THE FIRE AND SMOKE ENTERED INSIDE THE VEHICLE AND I GOT OUT AFTER A LITTLE BIT CAUSE THE CAR HAD NO POWER TO OPEN DOORS OR DO ANYTHING! I THINK THE PROBLEM WAS WITH ELECTRICITY! I WANT THE CAR NO MORE! I WILL RETURN IT BACK!
Feb 14, 2017
POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC),ENGINE
1 complaint
I WAS DRIVING STRAIGHT TOWARD HIGHWAY 287 AT 65M SPEED, THERE WAS NO SNOW NO RAIN NORMAL TRAFFIC NO CARS CLOSE TO ME, ALL THE SUDDEN ESP INDICATOR WENT OFF, ACCIDENT COLLISION PREVENTION INDICATOR WENT OFF ON MY DASHBOARD AND THE VEHICLE SPEED WENT DOWN TO 30M, 20M AND I WAS NOT ABLE TO BRING THE SPEED BACK, THE VEHICLE STOPPED RESPONDING. I PULLED OVER CALLED ROAD ASSISTANCE, I TURNED THE ENGINE OFF, START AGAIN I WAS ABLE TO DRIVE AT 20 - 30MILE, WHEN I ENTERED HIGHWAY 46 ON THE TRAFFIC LIGHT THE VEHICLE WAS NOT RESPONDING AT ALL, I KEPT PRESSING THE GAS PEDAL, UNTIL THE CAR START TO DRIVE AGAIN UP TO 25M. TOOK IT TO THE DEALERSHIP WORKSHOP, THEY WAS FAULTS IN THE SENSOR AND GAS PEDAL THEY FIXED.. I TOOK THE VEHICLE AFTER ONE WEEK CHECK ENGINE INDICATOR WENT OFF AGAIN. TOOK IT AGAIN TO THE DEALERSHIP WORKSHOP. I CONSIDER WHAT HAPPENED WITH THIS VEHICLE IS REAL SAFETY ISSUE WHERE ALL THE SUDDEN YOU CAN'T CONTROL THE SPEED ANYTIME ANYWHERE.
Feb 06, 2017
AIR BAGS,UNKNOWN OR OTHER
1 complaint
VEHICLE HAD FRONTAL IMPACT WITH OTHER CAR ON LOCAL ROAD. THE VEHICLE AIRBAGS ON PASSENGER SIDE INFLATED AND DEFLATED COMPLETELY DIFFERENT COMPARED TO THE DRIVER SIDE AIRBAG. WE BELIEVE MB GLC PASSENGER SIDE AIRBAG HAS FACTORY DEFECT IN OUR CAR. PLEASE SEE ATTACHED PHOTO ON PAGE 2.
Jan 20, 2017
Frequently Asked Questions
How many problems does the 2017 MERCEDES-BENZ GLC-Class have?
The 2017 MERCEDES-BENZ GLC-Class currently has 112 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 GLC-Class?
The most common problems reported for the 2017 MERCEDES-BENZ GLC-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 GLC-Class problem data come from?
All problem and complaint data for the 2017 MERCEDES-BENZ GLC-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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