Engine complaints and recalls from NHTSA
Summary
The 2021 Mercedes-Benz C-Class has 5 NHTSA engine complaints and 0 engine-related recalls.
5
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 9, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Dec 22, 2025 | ENGINE | The contact owns a 2021 Mercedes-Benz C300. The contact stated that while driving at an undisclosed ... |
| Oct 10, 2025 | ENGINE | 2021 Mercedes-Benz C300 with M254 2.0L turbo engine experienced sudden cylinder head failure at 44,0... |
| Feb 13, 2025 | ENGINE | Cylinder head needed to be replaced on the M264 engine at 35,000 miles. The replacement part is also... |
| Jul 1, 2023 | ENGINE | the check Engine light fault code P012D12 The pressure sensor upstream of the turbocharger had a sho... |
| May 21, 2023 | ENGINE | Piston Connecting Rod broke and left the engine making holes in both sides of the block; Mercedes Be... |