2021 Mercedes-Benz GLC owner complaints
Most named: engine
30 of 66 complaints
- Crashes
- 1
- Fires
- 2
- Injuries
- 0
- Deaths
- 0
Owner complaints to the US safety agency (NHTSA), 2021 models.
Components named most often
A complaint can name more than one component.
| Component | Complaints | Share of complaints |
|---|---|---|
| Engine | 30 | 45% |
| Exterior lighting | 13 | 20% |
| Fuel system | 10 | 15% |
| Electrical system | 8 | 12% |
| Other or not specified | 7 | 11% |
| Transmission and drivetrain | 4 | 6% |
Complaints by model year
Rivals, 2021
| Rival | Complaints |
|---|---|
| Ford Mustang Mach-E | 347 |
| BMW X3 | 111 |
| Audi Q5 | 74 |
| Lincoln Nautilus | 23 |
| Cadillac XT5 | 14 |
| Land Rover Range Rover Evoque | 6 |
What this cannot tell you
Counts, not rates. Sales volume differs by model.
Complaints are owner reports, not confirmed defects.
Source: NHTSA complaints data (api.nhtsa.gov), public domain. Collected 2026-10-05.
- Two or more sources agree
- One source
- Model-level or estimate
- Sources differ