Worst 2018 GMC Terrain Problems
Top 3 most-reported issues with average mileage at failure.
Brakes
Engine Problems
Transmission / Drivetrain
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All Problems by Category
Every NHTSA complaint category for the 2018 GMC Terrain.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Brakes | 62 | 2 | — | 36,149 mi | |
| Engine Problems | 49 | — | 1 | 49,558 mi | |
| Transmission / Drivetrain | 40 | 2 | — | 46,449 mi | |
| Electrical Faults | 33 | 1 | 1 | 29,208 mi | |
| Airbags | 13 | 7 | — | 32,791 mi | |
| Fuel System | 11 | 2 | — | 10,592 mi | |
| Hydraulic Brakes | 8 | — | — | 90,696 mi | |
| Unintended Acceleration | 8 | 1 | — | 21,263 mi | |
| Electronic Stability Control | 7 | — | — | 5,560 mi | |
| Steering Defects | 6 | 2 | — | 9,983 mi | |
| Forward Collision Avoidance: Automatic Emergency Braking | 4 | — | — | — | |
| Wipers & Visibility | 4 | — | — | — | |
| Forward Collision Avoidance: Warnings | 3 | 1 | — | — | |
| Seat Belt Issues | 3 | 1 | — | — | |
| Seat-Related Issues | 3 | — | — | — | |
| Body Structure | 3 | 1 | — | — | |
| Diesel Fuel System | 2 | — | — | — | |
| Suspension Failures | 2 | 1 | — | — | |
| Wheel Issues | 2 | — | — | — | |
| Air Bags:Srs Malfunction Warning Lamp/Light | 1 | — | — | — | |
| Back Over Prevention: Sensing System: Camera | 1 | — | — | — | |
| Electrical System:Adas:Blindspot:Sensors | 1 | — | — | — | |
| Electrical System:Horn | 1 | — | — | — | |
| Engine & Cooling | 1 | — | — | — | |
| Headlight/Taillight Failures | 1 | — | — | — | |
| Forward Collision Avoidance: Adaptive Cruise Control | 1 | — | — | — | |
| Gasoline Fuel System | 1 | — | — | — | |
| Lane Departure: Blind Spot Detection | 1 | — | — | — | |
| Lane Departure: Warning | 1 | — | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2018 GMC Terrain. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2018 GMC Terrain
5 NHTSA recall campaigns affecting ~497,036 vehicles.
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Equinox, Impala, Cruze, Volt and Bolt EV vehicles, GMC Terrain vehicles, Buick Lacrosse and Regal vehicles, Cadillac XTS and XTS Professional vehicles and 2018 Chevrolet Malibu vehicles. The rear brake caliper pistons may have an insufficient coating causing gas pockets to form, potentially reducing rear brake performance.
General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles. The high pressure fuel pump may detach from its mounting flange, possibly resulting in the pump damaging the high pressure fuel line.
General Motors LLC (GM) is recalling certain 2018 GMC Terrain vehicles. The sensing diagnostic module (SDM) that senses a crash and deploys the necessary air bags may not power down correctly when the vehicle is shut off, causing it to be inoperative when the vehicle is restarted.
General Motors LLC (GM) is recalling certain 2018 Chevrolet Equinox and GMC Terrain vehicles and 2017-2018 GMC Acadia vehicles. The right front intermediate driveshaft may fracture and separate while driving.
Other GMC Terrain Years
2018 GMC Terrain — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2018 GMC Terrain reliable?
What are common problems with the 2018 GMC Terrain?
At what mileage do problems start on the 2018 GMC Terrain?
How safe is the 2018 GMC Terrain?
Does the 2018 GMC Terrain have any recalls?
Should I buy a 2018 GMC Terrain?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full GMC Terrain reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2018 GMC Terrain
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