34 owner complaints filed with the United States safety regulator · top issue: Service Brakes · verdict BUY 87/100
“Driving on the Garden state parkway on Sunday night June 28, 2026 I proceed to cross over the ratitan bridge. There was traffic as I was going down the bridge at 70 miles an hour. When I applied the brakes the car would not stop. I had two 6 years old in the backseat. I applied 2 feet to the brake pedal and it was like a rock and the car would not slow down. I thought I was going to crash. I had to steer and lane cha”NHTSA complaint, 2021 GMC Terrain owner
“Automatic transmission solenoid control valve body got stuck open and ruined the whole transmission. This has been a reoccurring problem with these vehicles. Image is from a code read. Issue was confirmed by Gastorf Chevrolet, and an independent transmission shop.”NHTSA complaint, 2021 GMC Terrain owner
“The contact owns a 2021 GMC Terrain. The contact stated that while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal, with a misfire coming from the engine. During the failure, the message "Engine Power Reduced" was displayed on the instrument panel. The vehicle was taken to a local dealer, and the contact was provided an estimate for a diagnostic test. The contact declined. The ”NHTSA complaint, 2021 GMC Terrain owner
| Reported | Component | Summary |
|---|---|---|
| 05/08/2021 | Tires | General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Equinox and GMC Terrain vehicles equipped with certain Hankook tires. The tires may have been manufactured with an insufficient amount of curative agent, |
| 11/05/2023 | Child Seat:Vehicle Latch Anchor | General Motors, LLC (GM) is recalling certain 2020-2023 Chevrolet Equinox and GMC Terrain vehicles. The four rear-seat lower child seat LATCH anchorage bars may have excessive powder coating, which could prevent a child |
On the federal record it scores 87/100: 34 owner complaints (6.8 per year on the road) and 2 recall campaigns, 0 touching safety-critical systems.
The most-reported component in NHTSA complaints is Service Brakes, with 8 of 37 categorised reports.
The 2021 GMC Terrain scored 87/100 on the federal record.