Is the 2012 GMC Terrain a bad year?
364 owner complaints to NHTSA. Engine complaints: 170, 3.7× a quiet Terrain year.
Keep it, but watch the engine
Half of the engine complaints for this year were filed at 62k–110k miles, where you are now. Few of them say the car was towed: 4 of 165 filed since 2016.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2012 Terrain owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 86,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| EngineSTANDS OUT | 170 (47%) | 62k–110k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Visibility and wipersSTANDS OUT | 81 (22%) | 70k–109k miles · around this mileage | — |
| Transmission and drivetrain | 37 (10%) | 72k–101k miles · around this mileage | CV axle / CV joint replacement (one side) $300–$1,500 · Automatic transmission replacement $2,500–$7,000 |
| Electrical system | 32 (9%) | 51k–95k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Fuel system | 29 (8%) | 23k–123k miles · around this mileage | Fuel pump replacement $220–$1,500 · Fuel injector replacement (one injector) $300–$1,200 |
| Air bags | 25 (7%) | 32k–100k miles · around this mileage | — |
| Stability control | 13 (4%) | 45k–86k miles · around this mileage | — |
| Speed control | 11 (3%) | 44k–103k miles · around this mileage | — |
| Body structure | 12 (3%) | 6k–78k miles · mostly behind | — |
| Steering | 7 (2%) | 7k–74k miles · mostly behind | — |
| Exterior lighting | 10 (3%) | too few with a mileage | — |
| Seat belts | 9 (2%) | too few with a mileage | — |
| Brakes | 5 (1%) | too few with a mileage | — |
| Wheels | 5 (1%) | too few with a mileage | — |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 86,000 miles. Not a quote.
What owners reported alongside their complaints
Of 364 complaints: 17 mention a crash · 5 mention a fire · 16 report an injury · 11 say the car was towed.
4 complaints were filed in the last 12 months, the newest in Jun 2026.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
My 2012 GMC terrain 2.4L is having an issue with excessive oil consumption. I am constantly having to check my oil and it gets to 1 qt or more low between my 5k oil changes.
I turned the ignition off, exited the vehicle, walked 10-20 steps from the vehicle and the vehicle restarted itself.
As I was driving home from work on 2/1/18 on I94 at 72 MPH, my car starting sputtering and smoking. It then started making a very loud noise and my warning light came on saying to shut off my engine.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 86,000 miles), not by content. Unverified.
Recalls for the 2012 GMC Terrain: 4
A reflection caused by the headlight housings may illuminate areas above the vehicle and outside of the driver's view with excessively bright light. The bright reflection may cause a glare for other drivers, reducing their visibility and increasing the risk of a crash.
Also, certain 2013 Buick Encore, 2011 Buick Regal, 2013-2014 Buick Verano, 2011-2016 Chevrolet Cruze, 2010-2013 Chevrolet Equinox 2013-2015 Chevrolet Malibu, and 2011-2013 GMC Terrain vehicles may have been serviced with similar defective replacement electronic park lock levers. If the key is removed without the transmission in PARK, the vehicle may rollaway as occupants are exiting, increasing the risk of injury.
In the affected vehicles, the bolt that secures the driver's and passenger's power front seat height adjuster may fall out causing the seat to drop suddenly to the lowest vertical position. If the driver's seat unexpectedly drops, the distraction and altered seat position may affect the drivers' control of the vehicle, increasing the risk of a crash.
The tire pressure monitoring system is designed to illuminate the tire pressure warning light when the pressure in a tire is 25% below the recommended cold tire pressure. On these vehicles, the light will not illuminate until the tire pressure is more than 25% below the recommended cold tire pressure. Underinflated tires can result in tire overloading and overheating, which could lead to a blowout and possible crash. The resulting crash could cause serious injury.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from GMC: 524
Repair instructions GMC sent its dealers for symptoms seen in the shop on the 2012 GMC Terrain. Ask a dealer or mechanic for a bulletin by its number.
If the vehicle stalls and set diagnostic trouble code P0191 and may also set P0172
Normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal…
Guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system
Internal Engine Noise or Damage After Oil Filter Replacement
NHTSA defect investigations: 3
Momentary Increased Steering Effort
Front Wiper Transmission Inoperative
Windshield Wiper Transmission Failure
Neighbouring years
2011 Terrain: 385 complaints, consider selling · 2013 Terrain: 365 complaints, consider selling.
Every GMC Terrain year
2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026 · All Terrain years side by side
Other GMC models: GMC Acadia · GMC Canyon · GMC Denali · GMC Envoy · GMC Envoy XL · GMC Envoy Xuv · GMC Jimmy · GMC Safari · GMC Savana · GMC Sierra · GMC Sierra 1500 · GMC Sierra 2500 · GMC Sierra 3500 · GMC Sierra Denali · GMC Sonoma · GMC Yukon · GMC Yukon Denali · GMC Yukon Denali XL · GMC Yukon XL · GMC Yukon XL 1500. All makes and models.
Questions
Is the 2012 GMC Terrain a bad year?
364 owner complaints to NHTSA. Engine complaints: 170, 3.7× a quiet Terrain year. At 86,000 miles the tool says: Keep it, but watch the engine. Half of the engine complaints for this year were filed at 62k–110k miles, where you are now. Few of them say the car was towed: 4 of 165 filed since 2016.
What are the most common problems with the 2012 GMC Terrain?
By owner complaints to NHTSA: engine (170), visibility and wipers (81), transmission and drivetrain (37), electrical system (32), fuel system (29). Half of the engine complaints were filed between 62k–110k miles.
How many recalls does the 2012 GMC Terrain have?
4 recall campaigns list this model year: Exterior lighting (NHTSA 22V-137), Transmission and drivetrain (NHTSA 16V-502), Seats (NHTSA 14V-447), Tires (NHTSA 11V-511). A recall may cover only some cars; check by VIN at nhtsa.gov/recalls.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.