2023 GMC Terrain problems and complaints
Owners have filed 39 complaints with NHTSA about the 2023 GMC Terrain. The most-reported areas: Fuel/Propulsion System (15), Engine (14), Power Train (7).
Key takeaways
- 39 owner complaints on file with NHTSA.
- 2 involve a crash, 1 a fire, 1 reported injury.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Fuel/Propulsion System | 15 | 38% |
| Engine | 14 | 36% |
| Power Train | 7 | 18% |
| Unknown Or Other | 7 | 18% |
| Electrical System | 7 | 18% |
| Fuel System | 6 | 15% |
| Gasoline | 6 | 15% |
| Lane Departure | 4 | 10% |
| Air Bags | 2 | 5% |
| Forward Collision Avoidance | 2 | 5% |
| Vehicle Speed Control | 2 | 5% |
| Structure | 1 | 3% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2023 GMC Terrain SUV AWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2023 GMC Terrain SUV FWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Fuel/Propulsion System - filed 2026-09-20
I purchased this vehicle two weeks ago. It was my first time driving it since I bought it home from the dealer. I was on the highway driving about 55 mph in the left lane. All of a sudden the car started to slow down on its own going down to 15 mph without knowing what was happening. I tried to ease my way to the left ...
Air Bags - filed 2026-09-01
Harness for the airbag gave out. Puts the passenger at risk. Confirmed by service members at Rodenroth Motors Inc. in Sault Ste Marie MI. Message said service "Restraint system". There was no official incident date. One day whenever somebody sat in the passenger side the warning would appear.
Power Train,engine,forward Collision Avoidance - filed 2026-08-05
adaptive cruise disengaging alert on dash- no cars or weather conditions to induce this. loss of power and bucking on highway( near accident caused) catostostrophic sudden loss of power engine/transmission failure while mechanic driving resulting in car towed back to dealer. loss of power multiple times causing near ac...
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More for the 2023 GMC Terrain
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.