2021 Mercedes-Benz C-Class
Problems, recalls and owner-reported issues
Engine is the leading concern among 15 owner complaints filed for this model year. This is the 23rd highest complaint count among 23 C-Class model years with reports.
Primary concernEngine8 reports · 53% of complaints
Owner complaints15Filed with NHTSA
Recall relationshipNo recalls on fileNHTSA campaign records
What owners report most often
Recalls and investigations
No safety recalls on file.
Representative owner complaints: gasoline
1 report, newest first. Show all
Fuel system, Gasoline, May 19, 2026
The contact owns a 2021 Mercedes Benz C. The contact stated that while driving on the highway, the vehicle began to lose power, riding rough. The check engine light illuminated. The vehicle was towed to the dealer where it was diagnosed with a fuel injection failure. The vehicle read diagnostic code P1CEF85. The manufacturer was made aware of the issue. The approximate failure mileage was 60,000.