2021 GMC Terrain owner complaints
Most named: engine
10 of 36 complaints
- Crashes
- 4
- Fires
- 0
- Injuries
- 4
- 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 | 10 | 28% |
| Transmission and drivetrain | 8 | 22% |
| Service brakes | 8 | 22% |
| Electrical system | 7 | 19% |
| Forward collision avoidance | 3 | 8% |
| Other or not specified | 3 | 8% |
Complaints by model year
Rivals, 2021
| Rival | Complaints |
|---|---|
| Honda CR-V | 331 |
| Subaru Forester | 207 |
| Mazda CX-5 | 147 |
| Volkswagen Tiguan | 141 |
| Chevrolet Equinox | 96 |
| Jeep Compass | 80 |
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