2017 GMC Terrain vs 2018 GMC Terrain
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Sep 21, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2017 GMC Terrain | 2018 GMC Terrain |
|---|---|---|
| NHTSA complaints | 133 | 220 |
| Recall campaigns | 1 | 5 |
| Service bulletins (TSBs) | 1,064 | 1,344 |
| Investigations | 0 | 0 |
| Crash reports | 11 | 14 |
| Fire reports | 2 | 1 |
| NCAP overall rating | 4/5 | 5/5 |
| EPA MPG (combined) | 18–25 | 23–32 |
| Median reported incident mileage | 48,850 mi | 25,000 mi |
Reported problems side by side
| Component | GMC Terrain | GMC Terrain |
|---|---|---|
| Engine | 77 | 53 |
| Service Brakes | 2 | 68 |
| Power Train | 23 | 41 |
| Electrical System | 9 | 35 |
| Air Bags | 12 | 14 |
| Fuel/propulsion System | 4 | 12 |
| Service Brakes, Hydraulic | 0 | 13 |
| Structure | 7 | 3 |
Symptoms owners describe
| Oil consumption | 18 | 0 |
| Stalling | 15 | 16 |
| Check engine light | 8 | 25 |
| Loss of power | 6 | 9 |
| Brake problems | 0 | 12 |
| Vibration / shaking | 0 | 10 |
| Hesitation / surging | 0 | 5 |
2017 GMC Terrain
2018 GMC Terrain
Compare all GMC Terrain vs GMC Terrain years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.