FREE VEHICLE RESEARCH
2018 GMC Terrain AWD
The 2018 GMC Terrain AWD has 5 NHTSA safety recalls on file, 212 owner complaints, and gets about 32 mpg combined. Here's the full free record from NHTSA and the EPA.
SPECS
2018 GMC Terrain AWD at a glance
- Engine
- 4-cyl 1.6L
- Cylinders
- 4
- Displacement
- 1.6 L
- Drivetrain
- All-Wheel Drive
- Transmission
- Automatic 6-spd
- Body
- Small Sport Utility Vehicle 4WD
- Fuel
- Diesel
Source: EPA / NHTSA vPIC, as of July 10, 2026.
SAFETY RECALLS · NHTSA
5 openAir Bags
24/05/2018
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.
Remedy: GM will notify owners, and dealers will reprogram the SDM with updated software, free of charge. The recall began June 29, 2018. Owners may contact GMC customer service at 1-800-462-8782. GM's number for this recall is 18179.
Service Brakes, Hydraulic
30/08/2018
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.
Remedy: GM will notify owners, and dealers will bleed the vehicle's brake system, free of charge. The recall began October 11, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18279.
Fuel System, Gasoline
31/05/2018
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.
Remedy: GM will notify owners, and dealers will replace the high pressure fuel pump, and high pressure fuel pipe, free of charge. The recall began July 2, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18188.
Power Train
29/10/2020
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.
Remedy: GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick Customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N202313440.
Power Train
22/08/2017
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.
Remedy: GM will notify owners, and dealers will replace the right front intermediate drive shaft assembly, free of charge. The recall began August 25, 2017. Owners may contact GMC customer service at 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 17329.
NHTSA has opened one or more investigations covering this model. Recalls can follow an investigation, so check NHTSA for the latest before you buy.
Open safety recalls are free to fix at any franchised dealer. What recalls mean → Source: NHTSA recalls, as of July 10, 2026. Recalls can be issued any time, confirm by VIN at nhtsa.gov before you buy.
OWNER COMPLAINTS · NHTSA
212 filed- 63
SERVICE BRAKES
Vacuum pump that supplies vacuum to brake booster failed without any warnings beforehand leaving us without the ability to stop. Luckily was able to avoid an accident.
- 39
POWER TRAIN
The contact owns a 2018 GMC Terrain. While attempting to shift to reverse(R) out of a parking spot, the message “Transmission Unable to Shift” was displayed on the instrument panel, and the transmission was unable to shift into reverse(R).
- 29
ELECTRICAL SYSTEM
The infotainment system will just randomly start going haywire and when it happens, you cannot use the touchscreen. It will try to randomly delete app icons such as the camera, it will try to delete connected phones, it will try to delete r
- 24
UNKNOWN OR OTHER
The control knob that controls AWD, 2WD,Off-road, and 4 x4 AWD. Just stopped working. Stuck on 2WD mode. I did have it checked for any codes, even though, there is NO check engine light is on.
- 17
ENGINE
Brakes were hard to engage or press when stopping due to Vacuum pump stop working. Had to replace the vacuum pump
- 12
AIR BAGS
My car was t-boned on the driver side and no airbags deployed. The outer door and window exploded with the force. We were also hit from behind
Problems owners reported to the government, useful for spotting patterns, not proof any one car has them. What complaints mean → Source: NHTSA complaints, as of July 10, 2026. Owner-submitted reports, not verified diagnoses.
CRASH-TEST RATINGS · NHTSA NCAP
- Overall
- ★★★★★
- Frontal
- ★★★★★
- Side
- ★★★★★
- Rollover
- ★★★★☆
Government crash tests of this model; not every trim or year is tested. Source: NHTSA NCAP, as of July 10, 2026.
FUEL & RUNNING COST · U.S. EPA
- Combined
- 32 mpg
- City / Hwy
- 28 / 38
- Est. fuel / yr
- $2,450
- CO₂ / mi
- 319 g
EPA lab estimates; real mpg varies by how you drive. Source: EPA fueleconomy.gov, as of July 10, 2026. Annual cost assumes 15,000 mi/yr at EPA's reference price.
All figures above come from free U.S. government sources: NHTSA (recalls, complaints, investigations, crash tests) and the EPA (fuel economy and specs). We don't show market price, insurance cost, or proprietary reliability scores, because there's no free, reliable public source for them. For a verdict on a specific listing, with a fair-offer number and what to ask the seller, that's the VINly app.
BEFORE YOU BUY
What to check on this car
Confirm the recalls were fixed
This model has 5 open NHTSA recalls (including the air bags). Recall repairs are free at the dealer, so ask the seller for proof the remedy was performed, or verify by VIN at nhtsa.gov before you buy.
Have a mechanic check the service brakes
Owners report problems with the service brakes more than anything else on this model. Call it out specifically during a pre-purchase inspection.
Watch for a pending investigation
NHTSA has an open investigation covering this model. A recall can follow an investigation, so check nhtsa.gov for the latest before you commit.
-
Test-drive the basics
Cold start, full-lock steering both ways, firm brakes with no pulsing, smooth shifts, and every electronic feature. Warning lights should come on at key-on, then go out.
-
Check the title and the VIN
Confirm the title status in hand matches the listing, and that the VIN matches across the dash, door jamb, and title. VINly does not show ownership or accident history, for that, run a paid report like Carfax.
-
Ask the seller the right questions
Why they are selling, any service records, accident or panel-repaint history, how many owners, and whether any open recalls were completed.
See the full used-car inspection checklist. None of this replaces a hands-on inspection by a mechanic.
Quick answers
What is recalled on the 2018 GMC Terrain AWD? +
NHTSA lists 5 safety recalls for the 2018 GMC Terrain AWD, including the air bags. See the full list above, and confirm by VIN at nhtsa.gov.
What gas mileage does the 2018 GMC Terrain AWD get? +
The EPA rates the 2018 GMC Terrain AWD at 32 mpg combined (28 city / 38 highway), about $2,450 a year in fuel.
How safe is the 2018 GMC Terrain AWD? +
NHTSA's NCAP program gives the 2018 GMC Terrain AWD 5 out of 5 stars overall, with 4 stars for rollover resistance.
What do owners complain about on the 2018 GMC Terrain AWD? +
Owners have filed 212 complaints with NHTSA for the 2018 GMC Terrain AWD, including 14 involving a crash. The most-reported area is service brakes.
MORE GMC RESEARCH
FREE IN THE APP
Comparing a few cars? Save the 2018 GMC Terrain AWD and line it up against the others in the app.
No account. Saving and comparing cars is free; the per-listing report is $3.99.
THE FULL BUYER'S REPORT · $3.99
Found a 2018 GMC Terrain AWD for sale?
The research above is free. The app takes a screenshot of one real listing and returns a verdict, a fair-offer number, the red flags specific to that car, a walk-away floor, and a message you can send the seller, word for word.