2018 GMC Terrain Reliability ReportCommon Problems, Repair Costs & Expert Verdict
Should You Buy the 2018 GMC Terrain?
The 2018 GMC Terrain, a redesigned model year, offers a comfortable ride and modern features, but its powertrain presents notable risks. While generally well-equipped, prospective owners must be prepared for potential issues with its 9-speed automatic transmission and direct-injection engines, which can lead to frustrating and costly repairs if not properly managed. This SUV can be a good value, but it absolutely demands a thorough pre-purchase inspection and disciplined maintenance to avoid significant headaches.
Biggest Strengths
- Comfortable ride and quiet cabin
- Modern infotainment and safety features
- Decent fuel economy from 1.5L Turbo engine
Top Risk Areas
The systems that break first on the 2018 GMC Terrain. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.
NHTSA Recalls
5 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE
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.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
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.
What breaks on the 2018 GMC Terrain?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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GMC Terrain by Year
Compare reliability scores across nearby years of the GMC Terrain. Click any year for its full report.
If You're Considering This, Also Look At
Similar class, similar year range — ranked by reliability score.
Relevant Products for Your 2018 GMC Terrain
Parts and accessories matched to your 2018 GMC Terrain
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Frequently Asked Questions
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