How many problems does the 2021 ACURA RDX have?

The 2021 ACURA RDX currently has 91 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 2021 ACURA RDX?

The most common problems reported for the 2021 ACURA RDX 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 2021 ACURA RDX problem data come from?

All problem and complaint data for the 2021 ACURA RDX comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

2021 ACURA RDX Problems

UNKNOWN OR OTHER

18 complaints

Back windshield glass exploded with no impact. Car was not moving. There is shattered glass everywhere and the car cannot be driven until it is repaired. This appears to be a well known issue but there is no official recall at this time. My Acura dealer said this was covered in warranty that expired in November. The incident happened December 13, 2025.

Dec 13, 2025

Back windshield shattered and blew out with zero impact. Car was parked Manufacturer denies responsibility . Independent company repaired because dealer was booked and needed fixed quickly. No one injured glass all over back of car and trapped in base of doo now because of faulty design. No warnings at all.

Dec 11, 2025

I had found a leak coming from my 2021 Acura RDX early November. I took it into the dealership December 1st to get it diagnosed and they stated that the transmission and transfer case needs to get replaced. du The problem has been confirmed by the Bloomington Acura dealership on December 1st 2025. After doing research online it looks like this has happened to multiple people with different Acura Models, including newer models of RDX, TLX and MDX. No warning lamps, messages or failures appeared. Just oil leaking beneath the vehicle. It looks like Acura is aware of the issue. The metal shavings from the splines between the transmission and transfer case is destroying the seal. Causing the oil leak hence a new transmission and transfer case.

Dec 08, 2025

Complaint Summary I am filing this complaint regarding American Honda Motor Corp’s handling of a warranty claim on my 2021 Acura RDX. Despite being within the 4-year/50,000-mile warranty, I was denied full coverage for a well-documented defect: condensation/moisture in both headlight housings with no external damage. •Dealer (Rick Case Acura, Sunrise FL) confirmed the condition. •Technician Francisco documented internal moisture, no external damage. •Service Manager Wade Bell submitted goodwill request [XXX], which was approved at 70% only. •My out-of-pocket responsibility was ~$1,400. •I requested full coverage from American Honda, consistent with Acura’s warranty obligations and known issues with these headlight assemblies. On a recorded call, American Honda repeatedly stated my request was denied, refused to provide a written denial, and declined to issue a case reference number directly. Only after reviewing an email did I locate the case number ([XXX]). This refusal to document their denial is highly concerning. ________________________________________ Timeline of Events •[XXX]: Moisture first observed after rain; confirmed by dealer technician. •Dealer Request: Goodwill [XXX] approved at 70%. •Repairs Completed: Both headlights replaced; repair order available. •Sep 2025: American Honda denied my appeal verbally on recorded call; refused written denial. ________________________________________ Manufacturer Guidance Ignored Importantly: American Honda’s own dealer service bulletin (2023) regarding 2019–2021 Acura RDX headlamps explicitly instructs dealers to: •“Create an iN case number (via AcuraLink/Dealer iN) when moisture or condensation is observed inside RDX headlamp housings with no external damage present.” •“Submit for goodwill/warranty replacement of the affected headlamp assemblies.” This vehicle falls squarely within that guidance: a 2021 RDX, <4 years old, <50k miles, with moisture documented by the dealer. Despite this, A INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Sep 22, 2025

Rear window shattered without any certain impact due to a manufactured known defect. While I was driving the window shattered and all glass when flying every where. I contacted the dealer and the Acura corporate and they don’t want to know anything about it. I have my car sitting in my parking g lot because I don’t have $1000 to pay to replace my rear window. Right now there is a class action lawsuit to Acura due to this issue but nobody is taking responsibility for this incident. I will appreciate if you can look into this because it is very dangerous and it can cause a big accident.

Jan 28, 2025

+ 13 more complaints for this component

SERVICE BRAKES

8 complaints

After dealer (worldwide motors Ltd also call (Paragon Acura) 33-40 57th street, Woodside, NY 11377)replaced front and rear brake pads and rotors, my vehicle experienced unintended acceleration while stopped. While idling at a red light with my foot firmly on the brake pedal, the vehicle suddenly moved forward approximately 10 feet on its own. This was a serious safety concern and nearly caused a collision or pedestrian injury. I immediately returned the vehicle to the dealer. The dealer stated they could not duplicate the issue and said the vehicle was operating normally. No warning lights were present. The incident occurred immediately after brake service. I am concerned this may involve the braking system, brake booster, brake switch, or electronic throttle interaction. This behavior is not normal and poses a safety risk.

Dec 18, 2025

The front brakes and possibly the rear as well judder when applied at moderate and higher speeds. The sensation is disconcerting as though the brakes are prematurely failing. Malfunctioning brakes are obviously a safety issue. This is an ongoing problem and shouldn't be happening on a gently used, well maintained vehicle. It has been happening consistently and worsening for at least the past year. It is very reproducible but when I contacted the closest Acura dealer, they denied any known issues affecting this vehicle. No warning lamps or other errors were set but I doubt this issue is monitored by the vehicle's sensors.

Jan 30, 2025

On July 21st, 2024, the electronic parking brake on our 2021 Acura RDX seized and would not release. The vehicle had not sustained any damage and only had 63,270 miles on the odometer. The vehicle was in the garage but the brake seizure rendered the otherwise functioning vehicle unusable. The vehicle is available for inspection. There was nothing to indicate a problem prior to failure on the 21st. An Acura dealer replaced the gear unit motor that actuates the parking brake but the brake did not disengage as per the repair invoice attached. It was determined the parking brake switch circuit connection did not match specs and the parking brake switch was replaced. The parking brake worked at the time we retrieved the vehicle from the dealership but currently do not engage the brake as we are unsure if this will fail again. This issue put us and owners of like vehicles in danger due to the fact that a simple switch malfunction seizes the rear brakes of the car. Fortunately the vehicle was in our garage at the time but if failure occurs at speed, rear locked brake(s) could no doubt lead to a serious crash. At best, a parked disabled vehicle leads to very costly inconvenience as it did for us. Whether a failed switch or a poor connection my concern is the problem replicates while in motion while driving and losing control of the vehicle. From internet searches it appears failed switches are a growing problem with Honda vehicles equipped with electronic parking brakes. There exists no override ability to disengage the parking brake apart from the electronic switch. Again, an otherwise functioning vehicle can be disabled as the rear wheel(s) are seized.

Jan 22, 2025

I bought this car from a Honda dealership 1 month ago and my brakes are squeaking very loud when reversing my car. It happens every morning and is very frustrating. I would like this fixed for it being such an expensive car.

Dec 12, 2024

Since buying this car I’ve had a few occasions where the car has not slowed down and feels like the transmission is pushing the car more than it should under hard breaking.

Jul 16, 2023

+ 3 more complaints for this component

VISIBILITY/WIPER

7 complaints

I closed my driver door and the back window just shattered. The glass just exploded.

Dec 03, 2025

My car was parked in my driveway. After starting it up and closing my driver’s side door, the entire rear windshield spontaneously shattered without warning or any external manipulation/force. There was no way of knowing of whether or not this would happen. I fear that if I had my dogs in the car (or a child) someone could have been seriously hurt. Shards of glass went everywhere - in the trunk, all over the cargo area, and all over my driveway. I am now stuck without a car while I try to get this repair figured out. Acura/Honda needs to place a recall on this ASAP after seeing how common of an issue it is for many RDX (and other models) owners.

Dec 03, 2025

Rear window spontaneously shattered

Oct 28, 2025

I shut my driver door and my rear window shattered. I’ve called the dealer and they said this happens a lot. Our neighbor across the street also had this happen to them last week. The car was not even on.

Dec 13, 2024

Windshield washer pump has failed due to washer nozzles being clogged. Washer pump replaced, but still will not work as the nozzles are clogged. Nozzles are on back order, so therefore unable to clean windshield while driving. No idea when the nozzles will be in stock as this item is on critical back-order.

Sep 24, 2024

+ 2 more complaints for this component

AIR BAGS

6 complaints

The contact owns a 2021 Acura RDX. The contact received notification of NHTSA Campaign Number: 24V064000 (AIR BAGS); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Jun 24, 2025

The contact owns a 2021 Acura RDX. The contact received notification of NHTSA Campaign Number: 24V064000 (Air Bags); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Apr 14, 2025

The contact owns a 2021 Acura RDX. The contact received notification of NHTSA Campaign Number: 24V064000 (AIR BAGS); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Jan 14, 2025

The contact owns a 2021 Acura RDX. The contact received notification of NHTSA Campaign Number: 24V064000 (Air Bags); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Nov 04, 2024

The contact owns a 2021 Acura RDX. The contact received notification of NHTSA Campaign Number: 24V064000 (Air Bags); 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 dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.

Jun 28, 2024

+ 1 more complaint for this component

STRUCTURE,UNKNOWN OR OTHER

4 complaints

1:Sunroof frame shifts creating a popping noise during certain driving conditions. Turning and going up a drive way. 2:Distracting for the driver and passengers stay concerned the whole time. 3:There is a service bulletin with Acura 23-004 but no recall to the matter. 4: Unknown 5:No warning lamps

Dec 09, 2025

The panoramic sunroof exploded on our Acura RDX model 2021. Me, my wife and our 3 month old son were returning from dinner, we took the ramp and about to merge on a highway then we heard a loud and sudden explosive noise which scared all of us. Thank God we had the sunroof blind partially closed over the real infant seat, so the glass shatters left some minor cuts on my left forearm and back (glass pieces got between my back and driving seat). Also, the glass pieces did cut the sunroof blind/rolling cloth screen. We are glad that we made home safe and not sure what is the process of getting the issue fixed by the manufacturer and thorough cleaning up of the glass remains/dust. Please advise.

Oct 30, 2023

Injuries: 1

On NOV 20th 2021 took the vehicle for Oil change, to Acura dealer. The service tech informed me the hood its not opening. The latch or cable its broken. The part its not in stock. I can't open the hood to check all necessary fluids, especially windshield washer fluid. I think its safety concern when I'm out of washer.

Dec 01, 2021

BOTH MYSELF AND HUSBAND HAVE HEARD KNOCK OR LOUD POP SOUND. ONE LOUD KNOCK OR TWO WITH SLIGHT LEVEL CHANGE SUCH AS ENTERING OR LEAVING DRIVEWAY. MANY OTHER ACURA RDX OWNERS HAVE REPORTED SAME ISSUE. APPEARS TO BE FLEXING OF PANORAMIC SUNROOF. MY VEHICLE IS ONE WEEK OLD (WAS COURTESY VEHICLE) 2021 ACURA RDX. IN SHOP NOW. MANY HAVE REPORTED SERVICE ISSUES WITH NO RESOLUTION THROUGH DEALERSHIP OR ACURA. SEVERAL OWNERS HAVE ADDED ISSUES WITH SUNROOF LEAKING AND EVEN BLOW OUT OF SUNROOF WINDOW.

Mar 09, 2021

ENGINE

4 complaints

during acceleration on highway to pass a vehicle the Acura RDX lost power and decelerated. Check engine light came on....engine lost power to accelerate/maintain highway speed almost causing an accident.

Apr 05, 2022

Incident happened on, 22 July 2021- Rainy day, accelerated vehicle to pass, vehicle went limb unresponsive, check engine blinking, needed to stop in Highway 4. Almost got rear-ended by semi trailer, fortunately made maneuver for emergency stop. Turned vehicle off for a few minutes, while my heart settled and turned vehicle back on check engine was no longer blinking and vehicle was once more responsive. 24 July 2021, I am currently in Acura Autonation Dealer in Sanford for maintenance appointment and informed them of issue. I am waiting for their system to come up since they are currently having issues, hopefully I will receive further info on malfunction of vehicle.

Jul 24, 2021

I was driving in the rain, accelerated to pass a vehicle and the engine lost power. The check engine light came on and the car went into "limp" mode. The car would barely go 40 mph on a highway and the speed seemed to be continuing to decrease. Luckily I was able to pull over and shut the car off. Restarted, the problem appeared to go away. This is a very dangerous situation and I have read other people reporting similar incidents.

Jun 11, 2021

2021 RDX A-spec 7322 miles northbound Hwy 95 Nevada to Oregon, raining. Attempted to pass semi, car behind me also passing semi, sudden loss of power, almost hit from behind, risk of on-coming traffic, able to move to right behind semi. Feeble response to any attempt to accelerate, barely limping along, moved to right shoulder and then to pullout, blinking check engine light, no other warning indicators. Idled engine for several minutes, continued to run rough, would not rev, check engine light cycled off, then back on (blinking), then off over period of several minutes. Turned engine off, waited 10 min or so, restarted ok, finished rest of 600 mile journey scared to pass lawnmower. Life-threatening event for my wife and I, several moments of sheer panic. First time this has happened.

May 24, 2021

STRUCTURE

3 complaints

While driving over a bump or curb to enter parking lot, I hear a popping noise coming from the sunroof at the front passenger and rear driver side of the car.

Jun 24, 2025

Panoramic sunroof pops under stress Acura TSB 23-004

Mar 06, 2025

The panoramic sunroof makes popping sounds when I drive the car up or down ramps or curbs at angles that twists the chassis. This could potentially break and shatter the glass on top of the driver and passengers or worse dislodge from the mounting bracket and fall into the cabin of the car.

Jul 02, 2024

VISIBILITY

3 complaints

The contact owns a 2021 Acura RDX. The contact stated that while attempting to open the trunk, the rear window glass shattered. No warning lights were illuminated. The local dealer was contacted, and the contact was informed that the shattered glass was not covered under warranty and suggested that a local glass specialist be contacted. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 60,000.

Dec 11, 2024

The contact's wife owns a 2021 Acura RDX. The contact stated that there was a crack on the rear windshield. There was no impact to the rear windshield that could have caused the crack. The vehicle was taken to the dealer and diagnosed that the rear windshield needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.

Feb 15, 2022

The contact owns a 2021 Acura RDX. The contact stated while the vehicle was stationary in the driveway, he noticed that the rear windshield had shattered. Upon inspection, the contact stated he did not see any near objects that would have caused the windshield to shatter. The contact read online of other vehicle owners experiencing the same failure due to the cold weather. The contact called the local dealer and made them aware of the failure. The vehicle was not repaired but was pending repairs. The manufacturer had not been informed of the failure. The failure mileage was 5,539.

Dec 22, 2021

VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM

3 complaints

On 2-10-2024 I was driving the 2021 RDX SH-AWD on I-40W in TN with my daughter in the passenger's seat. It was raining. After about 2 hours of driving, at about 3:00 pm, I took a break at a Rest Area near Buffalo Valley. After ~20-min rest, I restarted the car and tried to merge back onto I-40W. I was accelerating towards the speed limit of 70 m/h, but suddenly, at about 65m/h, I felt the car losing power. I could not speed up anymore: the car did not respond to the gas pedal and the speed dropped to about 40m/h. The orange engine light started to flash on the dashboard. A truck nearly piled on me from behind. Cars and trucks from behind had to switch lanes quickly to avoid collision. I was able to pull over to the shoulder and stopped with my emergency light on. I turned off the engine for about 10 minutes, then I restarted the car again and got back on the road. This time, everything seemed normal, but I was so scared and worried the car might suddenly not respond again. Fortunately, I was able to get home eventually without any additional problems.

Mar 05, 2024

On 12/22/22, I was driving in a 2021 RDX SH-AWD with my pregnant wife and 2 year old son from Media PA to Pittsburgh PA . It was rainy and 35-40 degrees F the whole drive. Approximately 4 hours into the drive we stopped at a rest stop on the PA turnpike to get gas. While attempting to merge back onto the turnpike from the service road to the right of the turnpike, a truck was coming up behind me in the right hand lane of the turnpike. I was traveling approximately 40mph on the service road, so I went to accelerate to safely complete the merge in front of the truck. Near the end of my acceleration sequence (I estimate I had gotten to approx 65mph) my car went into “limp mode”. I felt an unexpected and immediate loss of power and my check engine light/“MIL” began flashing yellow. I was luckily able to barely avoid a collision with the truck that was approaching. After the light started flashing I was unable to turn the knob to switch drive modes (it was in snow mode at the time this all happened). I was unable to do anything but attempt to drive to safety with severe power loss. I was able to coast my car with minimal accelerator response to the next exit off the turnpike and into a motel parking lot. I shut down the car and then turned it back on. When I turned it back on, the MIL light was no longer flashing and I had normal power restored to the vehicle, but interestingly the auto stop/start feature no longer worked. I was able to drive the remainder of the way to Pittsburgh without any further loss in power, though I was anxious the entire drive considering the major malfunction I had just experienced while attempting a merge at highway speeds. The vehicle only had approx 10,500 miles on it at the time of the incident. The vehicle is currently at the dealership being diagnosed. A case has also been opened directly with Acura/Honda.

Dec 29, 2022

One week ago 6-20-22, my car started to ‘chug’ and slow down as I was accelerating up a hill on a highway. It was almost as if my car was losing power. When this happened about 10 warnings signs came up on my dash. I drove it directly to the dealership. They replaced my oil saying the pressure was low. All was well for the day after 6-21 when driving it home from dealership. On 6-22 I went to merge onto a local highway from a stop sign with traffic coming at 55-65 mph. My car would not accelerate over 25 and I was unable to pull of. Thankfully I pulled off onto the next exit. I could have easily been rear ended and hurt. This issue since will go away if I shut off my car and turn it back on, but not every time. It is still chugging and losing power when I drive and all the errors on the dashboard are coming up randomly. I drive A LOT everyday for work and this problem is really scaring me knowing I or others could get hurt.

Jun 27, 2022

POWER TRAIN,ENGINE

3 complaints

I was accelerating up a hill on a WV highway in a steady rain, the engine cut power, the check engine light flashed on and off, further throttle input did nothing, the car slowed on its own. I had to pull over from the left lane dangerously cutting in front of vehicles in the right lane as I could no longer maintain highway speed. Shut the car down and waited to rekey. Vehicle has operated fine ever since. The dealer has not been able to duplicated the issue (two weeks afterwards)

Sep 13, 2022

Driving at night in rain on interstate 81N in southern Virginia. I pressed accelerator all the way to pass and the car downshifted and then lost power. The engine light was flashing. I did not have enough power to maintain adequate highway speed while in the midst of a passing maneuver. While car was decelerating (with foot on accel pedal with no apparent response) I activated hazard lights and made my way across traffic to the shoulder. 70mph speed limit. I dropped to 50mph or so rather quickly amid traffic that put me and the traffic around me in a dangerous situation. Once stopped on shoulder (again in a dangerous situation that I'd prefer to avoid), i turned ignition off for 10 seconds and then restarted car. Situation seems to have cleared up; no engine light flashing and full? power. It did not happen again when I pressed accelerator to floor to recreate situation. This vehicle has 3800 miles on it.

Aug 20, 2021

Brand new 2021 RDX - bought 3 days ago, only 128 miles. Driving on highway and it suddenly loses power. Was able to get to shoulder, but unable to get enough power to exit the highway to find a safer place to park. Check engine light and several transmission warnings indicating I should see dealer immediately. As vehicle came close to a stop, it shuddered and clunked so badly it seemed like I ran something over, but nothing was there. Tried to shut vehicle down and restart, but constant error messages and would only lurch a little. Had to have vehicle towed to dealership, but of course they said they never heard of this happening before.

Jun 22, 2021

FORWARD COLLISION AVOIDANCE

3 complaints

What component or system failed or malfunctioned? Car automatically applied brakes on several occasions, despite no obstacles in front of the car. Incident 1: While driving through an 3-way intersection, the car slammed on the brakes automatically. There was a van in the opposite lane waiting to turn left. There was 2-3 feet of space so there was no risk of collision, but the car slammed on the brakes causing me to come to a sudden stop in the middle of the intersection. Incident 2: I was changing lanes to go past a stopped car in the left lane (It was waiting to make a left turn) The car automatically applied brakes, even though I would not have hit the car. Cars behind me had to slam on their brakes to avoid rear-ending my stopped car. Incident 3: While driving on a freeway at 65 mph with light traffic and no cars in front for at least 1000 ft the car flashed the automatic brake warning. It did not actually apply the brakes, but could have caused an accident considering the speed. Incident 4: While driving on a 2-lane road with cars parked on the sides of the road, the car displayed an automatic brake warning despite no collision being imminent. Incident 5: While driving down a suburban street with no trees or obstacles in sight, the automatic brake warning flashed. How was safety put at risk? Sudden stopping in a road, highway, or intersection could cause an accident. I am concerned for my safety, because if the car stops unexpectedly in the middle of the road, other cars may hit me. This is the same system used in some Hondas, so a recall of Honda vehicles may need to be extended to Acura vehicles. Has the problem been confirmed by dealer? Yes. The service advisor told me that his car has the same problem, but that it is normal and there is nothing they can do about it. Were there any warnings? Usually happens when there is a radar reflective object above or off to the side of the path of travel. The BRAKE warning appears when automatic braking is applied.

Aug 28, 2022

On 3 separate occasions my Collision mitigation braking system has malfunctioned. The first time I was driving at 55 with my cruise control set with no cars in front, behind or beside me when, without warning or reason, the orange brake light abruptly flashed on my front dash panel and my car abruptly stopped in a whiplash manner. The second occasion I was driving on the interstate at 65, on this particular interstate, the 64, it splits to the right to a separate interstate, the 264, and cars wait until the last minute to go 3 lanes of traffic over to get off. My car again without warning or reason flashed the orange brake sign on my front dash panel and my car abruptly stopped. Thankfully the cars rushing over did not hit me but there were honks and swerves and I could have been hit or caused an accident. The third incident occurred 8/25/21 with my son in the car while the feature was disabled, I was not close to the car in front of me, at least 2 car lengths as we were sitting in traffic and all trying to merge left, thankfully this time I was able to take control of the brake because I was going at a speed of ~5 but it scared my special needs son to the point of not being able to go back over that bridge.

Aug 26, 2021

On May 9th we were driving on the freeway at around 3 pm on a sunlit clear day. It was a straight section of road. Dry pavement and traffic moving reasonably well. The car in front of us was at least 100 yards in front of us and about the same for the vehicle behind I believe. We were going around 50 mph. The car slammed on the brakes so hard the seat belt restraints engaged as we flew forward, enough so that my wife and I were both sore the next day. Items on the back seat flew onto the floor. If there had been a car behind us we would have been rear ended and potentially a multi car pile up. We took the car to the dealership the next day. They had the car for the day and returned it saying everything is calibrated as it should be. I have called Acura and they set up a case number and a case manager and said they would call me. They have not called nor returned my repeated phone calls. I have asked for a supervisor to call and that has not happened either. Acura’s case number is 12213602 and Simon is the case manager. His phone is 800 999 1009 x87723. The supervisor’s name is Terry. I don’t have an extension number for her. We have grandkids that ride in car seats in the back seat. Thank god this didn’t happen with one or both in the back seat with a car behind us. We have been driving cars with the braking feature on them for 10 years now (Ford and Infinity) and have never had anything like this happen. We’ve had the adaptive cruise pick up on something in the past and ease off the accelerator but never anything like this. The cruise was not engaged when this occurred. In googling this it sounds like we aren’t the only ones having this issue.

Jun 08, 2021

POWER TRAIN

2 complaints

The transfer case began leaking between the transmission and transfer case. Upon taking it to a mechanic I’ve been told the entire transfer case needs replacement because it has prematurely failed. The repair cost is $5533.00. Through research I’ve seen there are many failing transfer cases on acuras with the SH all wheel drive systems. I believe Acura has a design flaw in the system and should be responsible for the repair.

Nov 06, 2025

The contact owns a 2021 Acura RDX. The contact stated that while the vehicle was parked in the driveway, he entered and started the vehicle; the contact then shifted from park(P) to drive(D) and the gear shifter independently shifted back into park(P). The contact stated that the failure had occurred three times within several months. The contact stated that the failure was intermittent. The vehicle was taken to the dealer. The dealer was unable to duplicate the failure. The vehicle was not repaired. The contact stated the vehicle had been taken to two Acura dealers however, the failure could not be duplicated. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 128,000. The VIN was unavailable.

Nov 02, 2023

ELECTRICAL SYSTEM

2 complaints

AcuraLink App was used to attempt to remote start car while at a store, however, the app reported a failed notification and car was never started through the app and only turned on manually. Two hours later, when at home, the car remote started suddenly with no prompt while it was inside of a closed garage. Our dog heard the car go off and alerted us. Had he not heard it, the car would have been running in a closed garage putting us at risk for carbon monoxide poisoning. I have done no other reporting, but I did look this up and found threads online about the same issue and was recommended to report here. There were no other warnings or messages to say that the car turned on.

Jun 12, 2025

When using my apple phone in the car I cannot answer, hang up, talk using the hands free option at certain times

Sep 17, 2021

SERVICE BRAKES,ENGINE

2 complaints

I have a 2021 Acura RDX A-spec AW and ever since I had a brakes problem, when applying brakes will not take break promptly kept slipping like going I address this to the dealer numerous time and what they said is that they haven’t had a recall in order to know what really the problem is I think is due to my calipers and probably rotors, but I think is the cut for defect on these 2021 Acura RDX . Also my engine been leaking oil from the top rear side and rear the valve cover this need to be addressed and I have made a complaint to Acura Honda The Corp. and they said they haven’t been a recall for this. Also, I would like someone to look at this matter break And engine problem due to a leak that could cost a fire.

Jun 01, 2025

While sitting in a long row of stopped vehicles at a traffic light for an extended amount of time due to an accident I had the Automatic Brake Hold feature activated { I did not have to have my foot on the brake while sitting still) as well as the Auto Idle Stop OFF button meaning {the engine shuts down when you come to a stop.} Apparently, the Brake Hold feature timed out with no warning whatsoever and because the vehicle moved forward the Auto Start Stop feature activated at the same time and the vehicle lurched forward rear ending a new expensive SUV in front of me. The impact was hard due to the quick lurch of my vehicle. I have damage to the front of my vehicle and all of the electronic features started flashing including the emission control. The driver advised she was very shaken up and if a pedestrian or bicyclist had been in front of us it could have been very tragic.The vehicle is being towed to A local Acura dealer for evaluation and I have a Case number assigned by Honda with no case manager assigned yet. There were no warning lights/lamps at all prior to the vehicle Brake Hold timing out and further searching through the manual only says it times out after 10 minutes but does not advise what happens when that happens or what warning will be used.

Apr 08, 2023

Crash: 1

AIR BAGS,SEATS

2 complaints

Remedy is available for the recall, but Honda will not fix the recall on my 2 vehicle’s that I own with this open recall. They are saying 2025 maybe. Unacceptable.

Jun 19, 2024

My wife, 78 years old, is petite. She weighs 75 lbs, height 4'10." The front passenger seat sensors don't register her as sitting in the seat with the result that the passenger air bag is not engaged (the dashboard light indicates the air bag is OFF). My vehicle, 2021 Acura RDX, passenger seat has 2 seat sensors while the MDX model has 4 seat sensors that would register her weight and the air bag system would be engaged. We have not had an accident. The MDX seat is not compatible with the RDX. Acura says that nothing can be done to rectify the problem. I consider this problem a safety defect.

Mar 13, 2023

SEAT BELTS

2 complaints

The contact owns a 2021 Acura RDX. The contact stated that while his son was in the car seat in the rear driver's side seat, he pulled the rear middle seat belt pretensioner and released it; however, the seat belt pretensioner retracted and tightened around his son's neck. The contact attempted to remove the seat belt, but the seat belt remained tightened. The contact stated that he used a utility knife to cut the seat belt. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed nor repaired. The failure mileage was approximately 15,000.

Aug 17, 2023

The rear driver side seat belt has frayed repeatedly over the last 2 years. This puts my young child at risk of the seat belt failing in an accident. The seat belt has been replaced by the local Acura dealership 3 times, but the cause of the fray has not been identified. Fray #1 was first seen with a Nuna Rava child car seat installed in the forward facing configuration. The fray was in the upper section of the OE seat belt between the car pillar and where it exits the child car seat. It was replaced in March 2022. This was replaced on goodwill from Bob Lindsay Acura dealership. Fray #2 was noticed in the same location in the new (March 2022) seat belt and replaced in December 2022. This was replaced on goodwill from Bob Lindsay Acura dealership. Fray #3 was again noticed in the same place in the December 2022 seat belt and replaced in January 2023. This was replaced on goodwill from American Honda Motor Co., Inc. The original thought was the tension from the car seat was causing the fray in the seat belt; however, the dealership and Honda provided no reason or explaination for why the belt was fraying or possible remedy solution beyond directly replacing the seat belt. The child has since outgrown the Nuna Rava child seat in January 2023 and is now a Diono Monterey high-back booster seat. This Diono booster was installed at the same time as the January 2023 seat belt replacement. Fray #4 was seen in the January 2023 seat belt at the same general location as the previous frays on 8 June 2023.

Jun 08, 2023

STEERING,LANE DEPARTURE,BACK OVER PREVENTION

1 complaint

At start up, my car displayed 4 errors: Lane Keeping Assist System, Collision Mitigation Braking System, Road Departure Mitigation System, and Electric Power Steering. As a result, my car could not steer and had to get it towed to the dealership.

Jun 17, 2025

VEHICLE SPEED CONTROL,UNKNOWN OR OTHER,ENGINE

1 complaint

Drove into parking lot and as I was pulling into the parking spot next to the building, the vehicle started to surge forward as if I had my foot on the gas instead of the brake. The sudden surge caused the vehicle to plow into a brick building causing about $10K damage to the vehicle and $5K to the building. This was not the first time this sudden surging occurred. It happened at least 3 times previously, and one time since. Fortunately, the other occurrences did not lead to any damages, but just some anxious moments. I took the vehicle to the dealership to get checked out after the last occurrence, but they said they couldn't duplicate it. I thought it might be some sort of "unknown" problem, until I started reading on Facebook and other internet websites of other people having the same scary "surging" engine issues. I believe there's more to it now, and an investigation is warranted.

Jun 09, 2025

Crash: 1

ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE

1 complaint

It was raining and I was sat at a stop light. The brakes started to slip a little no matter how much I pressed then all of a sudden the entire car started shutting down. Engine, Transmission, Power Steering, Lane Keep Assist, Collision warning, all the lights started flashing. The car was put into Limp mode.

May 09, 2025

EXTERIOR LIGHTING,STRUCTURE,ELECTRICAL SYSTEM

1 complaint

The contact owns a 2021 Acura RDX. The contact stated that while operating the vehicle, the front headlights and instrument panel lights started blinking off and on. The vehicle was later towed to the local dealer, who diagnosed the vehicle and determined that the body control module had malfunctioned due to water intrusion from the moon roof seals. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 30,000.

Apr 07, 2025

AIR BAGS,SEAT BELTS

1 complaint

I have been trying to get my vehicle repaired for over a year in response to recall number 24V-064 with no success. The vehicle manufacturer is not providing the required parts to the dealership to address this recall from early 2024. I think additional action needs to be taken against the manufacturer to drive improved behaviour to address safety recall issues in a timely manner

Feb 17, 2025

UNKNOWN OR OTHER,ENGINE,FORWARD COLLISION AVOIDANCE

1 complaint

While accelerating off the entrance ramp onto the highway, The engine randomly slows down automatically…the car reduced speed drastically without applying brakes and without cars around me or in front of me.

Jan 30, 2025

SEAT BELTS,SEATS

1 complaint

Complaint about failure to execute recall and lack of solutions from the official dealer I, [XXX] , owner of a 2021 Acura RDX, VIN: [XXX] , am filing a complaint regarding the inadequate execution of a recall and the lack of solutions from the official dealer. What component or system failed or malfunctioned? The issue concerns the seat weight sensor, which is supposed to be replaced as part of the recall. How was your safety or the safety of others put at risk? Due to the malfunction of the mentioned component, the safety of passengers could be compromised, especially in the case of an emergency, where this component plays an important role in the safety system. Has the problem been reproduced or confirmed by a dealer or independent service center? The official dealer confirmed the need for the recall, but refuses to perform the replacement, citing the unavailability of necessary parts and offering no alternative solutions. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle was registered for the recall, but a specific inspection by the manufacturer has not taken place. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure? At the time of contacting the dealer, there were no prior warning lamps or messages, but the situation requires immediate attention. Description of the incident and cause: Despite the recall being in place and the notification for the required repairs, the official dealer refuses to take the necessary action, citing the lack of parts, and does not offer any alternative solutions or specific timelines. This situation creates uncertainty and poses a potential safety risk. I kindly ask for prompt action to resolve this issue and ensure the recall is executed as soon as possible. Sincerely, [XXX] Contact information [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Jan 11, 2025

ELECTRICAL SYSTEM,SEATS

1 complaint

Acura RDX 2021.Faulty seat weight sensor front passenger seat. My wife is petite, [XXX] " and weighs [XXX]. When she sits in front passenger seat, at times, the seat weight sensor doesn't register that she's sitting in the seat and the air bag is not engaged. intermittently, the SRS light illuminates but many times it doesn't. I've taken the vehicle into the dealer (Chevy Chase Acura, Bethesda, MD) and they say there is nothing they can do when the SRS light is not on. I've brought the vehicle into the dealership several times. They say that parts are limited and not generally available and are expedited only when the SRS light is illuminated. I've called and spoken with American Honda Customer service and they refuse to help stating the same thing the dealer says. But this is definitely a safety issue. NHSTA Recall # 24V-064. Service Bulletin # 24-015. Please help. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Sep 24, 2024

POWER TRAIN,SERVICE BRAKES,ENGINE

1 complaint

While driving on a freeway for about 15 minutes at 65 MPH, the MIL indicator started blinking. The vehicle began to rapidly shake, while the engine power decreased significantly. The engine dramatically went from 65 mph to 35 mph causing a safety hazard while driving on the freeway as we attempted to exit and pull over safely. The vehicle is a 2021 Acura RDX and is driven approximately 10,000 miles per year. All maintenance has been performed in accordance with the manufacturer's schedule. It has not been involved in any collisions or other user risk other than normal driving in accordance with the approved use of the vehicles. Upon trying to restart the vehicle, the vehicle continues to violently shake while in park. Notification lights indicating Brake Failure, AWD failure, Check Emissions System, etc. There were no other indicators that there was an issue with the vehicle prior to this instance on 4/20/2024. In fact, the vehicle was viewed by Cerritos Acura for its regularly schedule service on 4/10/2024 and no issues were identified by the dealer. As far as safety, we were traveling with two young children and the location of the freeway did not have a safe place to pull over. The sudden reduction in speed also put us in risk with surrounding vehicles. This appears to be related to TSB 20-053, however, no communication have been identified or communicated by the dealers to the the owner/operator of the vehicle.

Apr 21, 2024

POWER TRAIN,AIR BAGS,SEATS

1 complaint

This is my second complaint to NHTSA. I purchased my certified pre owned Acura on 01/06/2024 After I added my Acura to my Car Insurance. They notified me and told me that there is an open Recall Associated with my vin number. That recall is for a (seat weight sensor) RECALL # 24v-064000 RECALL DATE 02/01/24 -- REMEDY NOT AVAILABLE. I filed a complaint with NHTSA ID# 11572570. After I filed my first complaint I found another unrepaired recall for my vin number Recall date 02/12/2021 NHTSA # 21v93900 For the power train drive shaft I'm not sure exactly what happened with this specific recall. I also wanted to add to my complaint that since my vehicle is a certified pre owend. I never received a complete inspection report indicating all the components inspected prior to selling me the vehicle. Now that I'm searching through all my paperwork. I also am hesitant with the interest rate. I put $20000 down on the vehicle. And I have excellent credit and my interest rate is 8.99% I also had to pay for the warranty.

Feb 22, 2024

AIR BAGS,SEATS,UNKNOWN OR OTHER

1 complaint

Approximately on 2/10/2024 shortly after i added my 2021 Acura to my auto policy my insurance co. GEICO notified me about the open recall. Nobody else has notified me on the open recall. I just purchased the vehicle on [XXX] from Autonation Acura In Torrance California. The recall notice Says "there is no remedy availableI" i purchased this beautiful CPO vehicle and I put $20,000 cash ( debit card) as a down payment and I had to pay additional costs for the extended 9 yr. warranty. I financed the rest. The vehicle price was $31.000 with 20.000 miles on it. The total costs $44.000. I haven't even made my first payment yet which is due february 20, 2024. My interest rate is high 8.99 is the rate and I have excellent credit. I've only put 20 miles or less on the car since I bought it. My auto Insurance Company now recommended that I do not drive it. My auto insurance could possibly go up in cost as well. I have not drove the car since I learned of the recall. I want my money back and I want to return the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Feb 18, 2024

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

1 complaint

I have a 2021 RDX. Was on the interstate moving at about 70 MPH coming back from Missouri. Raining. Lots of semis creating huge following misty, hard to see rain. Decided to accelerate to pass a couple. Car nearly stalled and acted like it had lost a cylinder's worth of power. Turned on hazards, slowed, pulled over and lifted the hood hearing all kinds of unusual noises. Shut the car off and restarted. All was well. Turned all lane-keeping, etc. off including cruise. Drove the last 100 miles or so without incident. Called dealer and was told likely didn't pull a code. Don't worry and keep driving. Said to make sure front of car was clean. Duh!! I keep my ride spotless (unless driving in the rain). Called CA's Acura line. Absolutely no help. 2 different females had no idea what limp mode was. Read quite a bit since then finding out it could be the result of many things including problems that could damage the motor and/or tranny. WOW!!! Had never heard of "limp mode" before. Nice that no info on this possible problem was anywhere in any user manual. Car has performed flawlessly ever since. So far, I guess the rain had interfered with the "radar" system and confused the computer. I'm thinking about buying a 40 year old car that doesn't have any of the modern computers etc. Later found info regarding TSB 20-053 which explains the problem and proposed solution. 06-26-2022 06:52 PM

Nov 27, 2022

STEERING,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

1 complaint

All software systems failed, disabling the vehicle. Error messages included failure in braking, steering, and other vital systems. Acura roadside assistance determined that the car had to be towed to the nearest dealer. The dealer confirmed the issue was a "DTC P061B PCM internal malfunction" and performed a "PGM-FI software update to correct the issue." The vehicle was completely disabled, and we were 4 1/2 hours from the nearest dealership. There were no warnings or communications prior to the incident.

Aug 08, 2022

VEHICLE SPEED CONTROL

1 complaint

My experience is in the attached file. My concern is Honda (Acura, same company) issued a service bulletin with VIN ranges (which my vehicle falls in) and yet there is no diagnostic error code to show it happened to the car, repair persons/dealerships can and have denied fixing anything because they can’t diagnose it and it’s in the owner’s manual directing the owner to take it to the dealer for repair. That’s a big disconnect. Luckily, I was able to dig to find the bulletin and provided it to my dealer with the description of what happened and they’re going to fix it. But that doesn’t help anyone else. You really should put pressure on American Honda Motor to issue a recall and do it right.

Aug 02, 2022

VISIBILITY/WIPER,FORWARD COLLISION AVOIDANCE

1 complaint

Purchased my 2021 in November of 2020. Two weeks after, i was driving with adaptive cruise on at 65 mph on a freeway. 100 yds ahead i could see a diesel going slower than i, so i looked and saw no one coming at all, so i moved over to the passing lane. I got 5 feet into the lane and the car slammed on its brakes, on its own!!! Thank god no one was behind me or i might have died!! I reported this to Acura within 1 week, and then reported it to DOT the next week. I own one of the first 2021 s made, so i didn’t see a lot of feedback. Now after a year and a half i get on the DOT website and see many complaints like mine. This has happens to me maybe once every 3 weeks. Why has the DOT done nothing about this??!!! Also the DOT says there are no recalls on my car but if you go to the Acura website it says my car is under recall for a driveshaft problem, of which i never received a notice. Why does the DOT exist??

Apr 04, 2022

VEHICLE SPEED CONTROL,ENGINE

1 complaint

I own a 2021 Acura RDX that was purchased new in February 2021. In the 11,500 miles I have driven it, there have been zero problems until yesterday. However, yesterday, when driving on an Interstate highway at 70 mph, in the rain, while passing a semi truck, my Acura RDX suddenly went into limp mode and the check engine light began flashing. After pulling over to the berm, and driving in the limp mode to the next exit, I turned the engine off. When I turned the engine back on it functioned normally and the check engine light went out. The engine has functioned normally for the approximately 100 miles I have driven since that time. Since there is no problem now, I have not taken the vehicle to the dealer to be checked since I felt that they would find nothing. When looking up this problem I found that mine is not an isolated case, and this same thing has happened to other Acura RDX owners. For that reason I am reporting the problem. I have also written to Acura to tell them of the problem. This was a very scary situation to have the engine suddenly, and without warning, go into limp mode while on a busy Interstate highway. Fortunately, in this case I was able to safely get to the berm of the road, but that might not always be possible. I have no idea when this might happen again, which is also scary. It is also very strange that by turning the engine off and then back on the problem disappeared. If requested, I would be happy to have Acura look at my vehicle if it would help to find the root cause of this problem. Thank you for your review of this problem.

Sep 23, 2021

WHEELS

1 complaint

REAR PASSENGER SIDE TIRE BLEW OUT WHILE DRIVING ON INTERSTATE. JUST BEFORE LEAVING THE HOUSE IT WAS INFLATED TO 35 PSI. AFTER GETTING ON INTERSTATE I RECEIVED A LOW TIRE PRESSURE INDICATION. INITIALLY IT SHOWED 17 PSI. I SLOWED DOWN AND BY THE TIME I GOT TO THE NEXT EXIT IT WENT DOWN TO 0. I PULLED UNTIL A PARKING LOT AND THE TIRE HAD SHREDDED OFF THE RIM. THERE WERE NO HOLES OR NAILS IN THE TIRE TREAD BUT APPEARS TO HAVE BLOWOUT HOLES IN THE SIDEWALL. THE TIRES ARE CONTINENTAL CROSSCONTACT.

Mar 13, 2021

SUSPENSION,SERVICE BRAKES, AIR

1 complaint

TL* THE CONTACT OWNS A 2021 ACURA RDX. THE CONTACT STATED THAT WHILE DRIVING, SHE HEARD A CLUNKING AND RATTLING SOUND COMING FROM THE FRONT PASSENGER'S SIDE WHEEL WELL AREA. DURING ACCELERATION AND STOPPING, THE CONTACT HEARD A POPPING SOUND COMING FROM THE REAR WHEELS. THE VEHICLE WAS TAKEN TO JENKINS ACURA (2025 SW COLLEGE ROAD, OCALA, FL 34471, (352) 414-4588). THE DEALER STATED THAT THE ROTORS WERE MAKING THE SOUND AND NEEDED TO BE ADJUSTED. THE CONTACT RECEIVED A CALLBACK AND WAS INFORMED THAT THE BALL JOINTS AND ROTORS NEEDED TO BE REPLACED, ALONG WITH THE AXLE AND WHEEL BEARINGS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD NOT BEEN CONTACTED. THE FAILURE MILEAGE WAS 200.*DT THE CONSUMER STATED THE DEALER REPLACED RF ROCKER ARM AND RF BALL JOINT ELIMINATING THE PROBLEM. *TR

Dec 16, 2020

SUSPENSION

1 complaint

THERE IS A HORRIBLE CLUNKING NOISE COMING FROM FRONT WHEN DRIVING OR TURNING (POSSIBLE PASSENGER SIDE). IT DOESN'T MATTER WHAT YOUR SPEED IS. IT SOUNDS LIKE IT MAY BE THE SUSPENSION OR STRUTS AND IT'S SO BAD THAT IT SOUNDS LIKE MY FRONT END IS FALLING APART. WITH ONLY 2400 MILES IT HAS GOTTEN WORSE AND WORSE. DROPPED IT OFF AT THE DEALERS THIS MORNING AND SERVICE TECH DROVE IT AROUND BUILDING TO COME BACK AND SAY HOW BAD IT SOUNDED. HE SAYS HE HASN'T EVER HEARD THIS NOISE. ALSO, THE REAR, WHEN BREAKING AND ACCELERATING HAS A POPPING NOISE DURING TAKE OFF AND STOPPING. BOTH NOISES ARE GETTING MUCH WORSE TO THE POINT MY HUSBAND SAID THAT I COULD NOT DRIVE IT OUT OF CONCERN FOR SAFETY UNTIL THIS ISSUE IS FIXED. SEEMS CRAZY THAT YOU WOULD ALREADY EXPERIENCE ISSUES LIKE THIS IN A BRAND NEW $50K CAR.

Dec 14, 2020

2021 ACURA RDX Problems & Complaints

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