2021 GMC Terrain Recalls, Problems & MPG
NHTSA lists 2 safety recalls and 36 owner complaints for the 2021 GMC Terrain. The EPA rates it 26 to 27 MPG combined, depending on engine and drivetrain.
- Recalls
- 2
- Owner complaints
- 36
- Crashes / fires reported
- 4 / 0
- EPA combined
- 26–27 MPG
2021 GMC Terrain recalls
Child SeatMay 11, 2023 · NHTSA 23V339000+
Risk: The inability to install a child seat with the LATCH anchorage bars could result in an unsecured child seat, increasing the risk of injury in a crash.
Fix: Owners are advised to install child seats using the vehicle's rear seat belts until the remedy is complete. Dealers will inspect the latch anchorage bars, and remove and replace the finish, as necessary, free of charge. Owner notification letters were mailed June 2, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N232403240.
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 seat from being installed with the anchorage bars. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."
TiresAug 5, 2021 · NHTSA 21V612000+
Risk: Tread separation can result in a loss of vehicle control, increasing the risk of a crash.
Fix: Dealers will inspect the tire DOT numbers, and replace any affected tires, free of charge. Owner notification letters were mailed on August 31, 2021. Owners may contact GMC customer service at 1-800-462-8782; and Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N212343560.
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, which could cause tread separation.
Recall repairs are free. Enter your VIN at nhtsa.gov/recalls to see if yours still needs one.
Most reported 2021 GMC Terrain problems
Owner complaints to NHTSA by system. One complaint can name more than one system.
- Engine10
- Service Brakes8
- Power Train8
- Electrical System7
- Unknown or Other3
- Forward Collision Avoidance3
- Engine and Engine Cooling2
- Fuel/Propulsion System2
2021 GMC Terrain gas mileage
EPA ratings for each version (city / highway / combined).
| Version | Engine | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|
| Terrain FWD | 1.5 L 4 cyl, Automatic 9-spd | 25 | 30 | 27 | $2,400 |
| Terrain AWD | 1.5 L 4 cyl, Automatic 9-spd | 25 | 28 | 26 | $2,450 |
Real-world mileage depends on how and where you drive. Logbay compares your actual MPG with these EPA numbers.
Questions
Does the 2021 GMC Terrain have any recalls?
Yes. NHTSA lists 2 recalls for the 2021 GMC Terrain, most recently for the child seat (May 11, 2023). Recall repairs are free at a dealer; check your VIN at nhtsa.gov/recalls.
What are the most common 2021 GMC Terrain problems?
Owners filed 36 complaints with NHTSA. The most reported areas are engine (10), service brakes (8), power train (8).
What gas mileage does the 2021 GMC Terrain get?
The EPA rates the 2021 GMC Terrain at 26 to 27 MPG combined (best version: 25 city / 30 highway).
Sources: NHTSA recalls and owner complaints (api.nhtsa.gov), EPA fuel economy (fueleconomy.gov). Updated Oct 26, 2026. Complaint counts are unverified owner reports.