Car fails to accelerate past 25 mph when entering roadway. Roadway area is 45mph and vehicle would not accelerate to reach safe levels. This out myself and occupants of my vehicle in danger as traffic is already at the 45+ mph limit. Vehicle has 30,000 miles. Engine light came on after incident.

Source: NHTSA complaint ODI #11745068 · view all complaints for this vehicle at nhtsa.gov

All on a sudden the entire screen goes blank. It has happened at least 4 times and each time the service center does some patching and it works for a few month. When it happens, all the safety features are off including reverse camera. Also, no way to set the temperature or turn of the AC. In both cases, it can lead to significant damage. The recent incident happened when I was a very busy area and without any safety feature, the car was pretty much un-drivable.

Source: NHTSA complaint ODI #11647755 · view all complaints for this vehicle at nhtsa.gov

Refer to Mercedes Complaint letter dated August 21, 2025. Refer to EDR report of the crash Mercedes Benz is claiming no responsibility for the failure of Active Brake Assist (ABA) during a frontal impact collision that resulted in the car total loss. The sensors also didn't work resulting in no alert to the driver and nothing recorded on the car camera system.

Source: NHTSA complaint ODI #11710517 · view all complaints for this vehicle at nhtsa.gov

I am attempting to submit a complaint against the Mercedes-Benz product and other auto manufacturers that follow this process. Mercedes provides no spare tire so this has been replaced by a "fix a flat" system that you can presumably use stop a tire air leak and then drive to a shop for repair. The fix a flat does not work when the tire is blown out or shredded so when this happens you are left with needing to have the vehicle towed to the dealership if using Mercedes' Roadside Assistance or to another shop at your own expense. Towing to a Mercedes dealership captures you to use the replacement parts in their inventory and costly labor charges. The time it takes to replace a tire is ridiculous considering a spare tire could be put on in a fraction of the time. There are approx. 30k miles on our vehicle and it has had to be towed twice for tires where the fix a flat did not work. Is this a safety issue? Absolutely, if you are driving outside of a city and the tire blows out then you are left with few options to resolve this and you better be in an area with cell phone coverage to contact Roadside Assistance otherwise you are stuck. I understand that "run flat" tires are now used but then why didn't Mercedes provide these automatically when our 2022 vehicle was purchased? These details need to be made know to consumers because the time and money spent for tire replacement on these vehicles is considerable and we are averaging having to deal with this once a year so far.

Source: NHTSA complaint ODI #11585399 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2022 Mercedes-Benz C300. The contact stated that while the vehicle was parked, the contact became aware that the seal had detached from the driver’s side front door. The contact stated that due to the failure, water entered the driver’s seat causing a short circuit in the electrical system. The vehicle was taken to a dealer and was determined to be a manufacturing defect. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline. The vehicle was not repaired. The failure mileage was approximately 6,000.

Source: NHTSA complaint ODI #11585926 · view all complaints for this vehicle at nhtsa.gov