Open safety recalls, the components owners report failing most often, crash-test results and running costs for the 2023 Mercedes-Benz C-CLASS Coupe — assembled from NHTSA and EPA records.
Everything on this page applies to the model as a whole. Run its 17-character VIN to decode that exact car — its engine, trim, assembly plant and factory equipment — alongside these records. Free, no account.
Run a VIN →Recalls and complaints are filed against a specific model year, so figures differ from one year to the next even within a single generation. See every Mercedes-Benz C-CLASS Coupe year.
No EPA fuel-economy match for this model (naming may differ or it predates EPA records).
Rated configuration: 2023 Mercedes-Benz C-Class Coupe 2 DR AWD
The parts named most often across 24 owner complaintsfiled with NHTSA for this make, model and year — the closest free answer to “what is likely to go wrong?”
Complaints are self-reported and skew toward problems people find alarming, so treat this as where to look, not a defect rate.
I am filing a safety complaint regarding my 2023 Mercedes-Benz AMG C43 4MATIC. The vehicle has approximately 23,000 miles. On multiple occasions, the vehicle has abruptly and violently applied the brakes and/or come to a near stop while I was driving on highways and side roads, even though there was nothing in front of me that should have triggered emergency braking. There was no vehicle, pedestrian, cyclist, object, or road hazard present that would justify this braking event. This is not normal braking behavior. The car essentially performs an uncommanded emergency stop or severe deceleration without warning. The force is strong enough to create a serious risk of being rear-ended by vehicles behind me. This has happened at highway speeds and on local roads, making the vehicle unsafe to operate. If a following driver is unable to react in time, this defect could easily cause a crash, injury, or death. The problem appears related to the vehicle’s automatic emergency braking / Active Brake Assist / forward collision avoidance system and possibly other linked driver-assistance systems. The vehicle has already been serviced on two separate occasions for this exact issue, yet the problem has occurred again. Despite bringing the vehicle in for repair more than once, the defect remains unresolved. Because this dangerous unintended braking continues to happen, I cannot continue to drive the car safely with this issue unresolved. On April 1, 2025, I took the vehicle to Aristocrat Motors in Merriam, Kansas for the car slamming on the brakes and beeping when no one was around. The service center calibrated the augmented reality camera and performed a test drive. The invoice indicates that they were unable to duplicate the braking event during the test drive. They ran codes with SDS and found that the augmented reality camera was not calibrated correctly, so they performed a calibration. On December 31, 2025, I again took the vehicle to Aristocrat Motors in Merriam, Kansa
When going into Reverse the passenger side mirror angles down to see curbs. When putting back into Drive it should be going back up to normal angle, but 20% of the time it does not go back up. If you're driving in the dark you may not know it's reverted back up and get into a car accident. Dealership said there are no issues and a technician stated it goes back up at +9 mph. I've gone over 30 mph driving on public street only to realize it late. I am hoping this gets publicity before an accident occurs due to a defective safety-comfort feature.
The contact owns a 2023 Mercedes-Benz C300. The contact stated that on occasion while driving at various speeds, the vehicle unexpectedly stopped without the brake pedal being depressed. There were no warning lights illuminated. The vehicle was diagnosed twice by the local dealer, and the contact was advised that the Forward Collision Avoidance sensors needed to be recalibrated; however, the failure persisted. The vehicle was taken back to the same dealer where the vehicle was inspected, and the contact was advised that further diagnostic tests were required to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 28,000. The VIN was not available.
My panoramic sunroof spontaneously exploded while driving down the highway, no external impact was made. The glass exploded from the inside out. It made a loud boom, it startled me on the highway resulted me to swerving on the road, which would have put me and other drivers at risk. There's plenty other MB drivers reported similar issues that stated. MB has also settled a class action lawsuit regarding such manner. UNKNOWN There were no warning signs prior to the event. The event spontaneous and sudden.
On 4 different occasions car brake assist activated causing car to come to an immediate stop and jerk. At stop light as I started to accelerate a left turn car came to an immediate stop almost causing the car behind hit rear end. Brake assist light activated. This happened twice. And twice when in reverse backing out of a parking space and backing into driveway. Dealership notified look at my car and stated they did not see anything wrong. 4th incident happened within 30 minutes after leaving Wilmington Mercedes Benz.
While driving at 60mph my panoramic sunroof completely shattered. Nothing at all hit the sunroof to cause it to shatter. If my sunshade cover had not been on, the glass would have fallen on me while operating my vehicle. This is not only dangerous but unacceptable. It was also a distraction that could have caused an accident. Mercedes did not make me aware of the class action lawsuit they have with the panoramic sunroofs, and I feel that was neglectful on their part. Upon inspection from a service advisor at a Mercedes Benz dealership, they told me something must have hit it (nothing hit it) and want to charge me $4,000 to fix it.
The contact owns a 2023 Mercedes Benz C300 equipped with Pirelli Tires, Tire Line: P Zero, Tire Size: 255/35/VR19, DOT Number: [XXX] . The contact stated while driving at undisclosed speeds, there was an unknown bumping sound heard. The contact pulled over and noticed that the passenger's side front tire was flat. The TPMS warning light was illuminated. The infotainment screen showed a reading of the tire 0 PSI. The contact noticed there was a hole in the tire and the side wall was damaged, and the rim was damaged. The contact depressed the SOS button but received no assistance. The vehicle was towed to the residence. The vehicle was taken to a tire center, but no assistance was provided. The contact called the local dealer and was provided information for the tire replacement. The dealer informed the contact that the tires on the vehicle were not correct for the vehicle. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The vehicle and tire failure mileages were 16,000. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
This car has the driver assistance package including Active Speed Limit Assist which is supposed to automatically adjust the speed of the vehicle based on detected speed limits. However, it gets the speed limit wrong an excessive amount of the time sometimes resulting in the car suddenly decelerating which I consider to be a serious safety issue that could result in collisions. In my situation, I have experienced the car suddenly slowing to 40 mph for no reason in an area where the speed limit was 65 mph. I have also seen this problem documented on a number of blogs related to Mercedes-Benz vehicles. When I reported the problem to the dealership, I was told that it was a known issue and was encouraged to turn this feature off. I think Mercedes-Benz needs to fix this known issue for those of us who have cars with Active Speed Limit Assist.
While driving on the highway I had decided to tilt my sunroof open. When it opened the sunroof completely cracked/shattered discarding tiny particles of glass all over me. There were no previous compromising cracks nor did anything hit my pano sunroof causing this to happen
The electrical wiring harness of my vehicle completely caught fire making my vehicle stopped working. Manufacture warranty refuses to acknowledge this as an ongoning issue with this models and forcing me to pay for my own repairs this is a danger to anyone driving this vehicle as the car entirely can be caught on fire at any given time.
Filing complaint on behalf of my sister. She was driving on empty side street around 25mph and the car comes to an abrupt stop. Apparently part of the collision avoidance system, yet nothing in road, on road or in sight. If there was anyone behind her, they would have slammed into the rear end of her car.
The contact owns a 2023 Mercedes-Benz C300. The contact stated that while driving with the Adaptive Cruise Control engaged, the vehicle decelerated quickly, causing the driver to lose control of 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 unknown.
Showing 12 of 24 complaints.
HTTP 400 Bad Request