Home · 2022 Mercedes-benz C-class Phev · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 26 complaints match · Brakes · clear filters
The contact owns a 2022 Mercedes-Benz C300. The contact stated while driving at unknown speeds, the active brake assist was not functioning properly. The brakes were applied without an object around the vehicle. There were no warning lights illuminated. The local dealer was contacted and scheduled an appointment. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 20,000.
NHTSA ODI 11554281
When I brake the car makes a clunking noise and I can feel a thumping on the brake pedal as I try and bring the car to a stop. This car is brand new. I have owned it for almost 3 weeks and it has less than 100 miles on it. You can both hear and feel the the clunk/thump as you attempt to brake the car. It seems as if it is coming from the drivers side of the car. I actually heard and felt this issue on May 23, 2022 3 days after I took delivery of the car. But I wasnt sure exactly what I felt. I haven’t Devine the car a lot until yesterday due to some medical issues I was having. Yesterday the issue was very bad every time I braked I could hear the clunk noise and feel it on my brake pedal. Contacted dealer and they have no reported issues. Car is going for service today. I am reporting this because it affects the brakes and that could be dangerous if the car is unable to be stopped.
NHTSA ODI 11468137
Working with the data? Download all 26 complaints as CSV · fetched from NHTSA July 20, 2026