2021 Mercedes-Benz C-Class: owner complaints and recalls
Analysis of 14 owner complaints filed with NHTSA and 0 recall campaigns. Updated 2026-07-25.
14
Complaints
0
Recalls
0
Crash reports
0
Fire reports
0
Injuries
0.0
Severity index
Severity index 0.0 - Low. This weights crashes, fires, injuries and fatalities per 100 complaints; see methodology.
What actually fails
| Component | Complaints | Share of complaints citing it |
|---|---|---|
| ENGINE | 7 | 50.0% |
| POWER TRAIN | 2 | 14.3% |
| AIR BAGS | 2 | 14.3% |
| FUEL/PROPULSION SYSTEM | 2 | 14.3% |
| FUEL SYSTEM | 1 | 7.1% |
| GASOLINE | 1 | 7.1% |
| VISIBILITY | 1 | 7.1% |
| SUSPENSION | 1 | 7.1% |
The single most-reported system is ENGINE, cited in 7 of 14 complaints (50.0%). One complaint can name several systems, so these shares overlap and do not total 100%.
Complaints filed per year
| Year | Complaints |
|---|---|
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 7 |
| 2026 (year to date) | 2 |
Complaint volume is rising - the last three years carry 11.0x the filings of the three before them, which usually signals a wear-related defect surfacing with age.
Source. US National Highway Traffic Safety Administration public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-07-25. Complaints are unverified consumer reports; volume is influenced by how many units were sold and how long the vehicle has been on the road. Not affiliated with NHTSA or any manufacturer.