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2018 GMC Terrain


City 21 - 28 MPG Hwy 26 - 39 MPG

Safety Rating

  • Overall Safety:
    4 stars
  • Frontal Crash:
    5 stars
  • Side Crash:
    4 stars

Vehicle crash and safety data is provided by NHTSA, the National Highway Traffic Safety Administration. NHTSA testing was established by Congress to reduce highway deaths and injuries.

Consumer Reviews Write a Review

Overall Rating:
4.7 (out of 5)
Value 4.5
Exterior 4.8
Interior 4.7
Comfort 4.7
Performance 4.6
Reliability 4.4

by Tarheelcat24 from Virginia Beach, Virginia | October 14, 2019

This past Saturday, 10/12/19, my 2018 (less than 25,000 miles) left me stranded. Once again, trouble with going into gear. I am driving on the highway, it starts revving, and won't move. I managed to get off of the highway and into a parking lot, thank goodness. Then it wouldn't go into any gear at all - message on dashboard said "conditions not good for changing gears." (Or something to that effect.) This shouldn't be the case for a 2 year old automobile with less than 25,000 miles. Pretty sure I am stuck with a lemon.

I wouldn't buy it

by Loumutt from Nashville, TN | September 25, 2019

I rented a terrain for a week for a 2200 mile road trip. The drivers seat is short, after a few hours on the road my right leg hurt enough that we had to stop so I could walk it off. I never had to do that before. The acceleration is slow and theres a lot of engine drone when getting on the highway. It feels like the transmission is hunting for the right gear after getting on the highway. The engine feels like its underpowered and plowing most of the time. The brakes have a good bite to them. The auto off feature should have a disable switch. Gas mileage was very good, I averaged 26.5 mpg on the highway. It was roomy enough for 4 adults, one of our passengers who is 6'2 fit behind the drivers seat comfortably and I'm 6'1. The ride is noisy on the highway although it is relatively smooth. The finish on the doors is cheap and flimsy. The a/c works real well. Too many buttons for the a/c and the sound system lacks power and quality sound. The plastic trim in the cargo area is thin and scratches easily. It will look terrible after a couple of years of regular use. The rear bumper cover scuffs easily, so it will most likely need a repaint after 2-3 years. It's a nice car to rent but for the money there are better choices if you're looking to buy. I wouldn't buy the Terrain or Equinox.

Dangerous design

by Monsoon from Oklahoma | August 21, 2019

I was driving my Terrain in 70 mph rush traffic and GMC new Start stop gas saving transmission feature switch decided to malfunction. It turned the car off. Luckily there was space between me a the car following me. It turned back on but shut off again as I was making my way to the side of the highway. The only thing I can say I’m very lucky I was on a outside lane when it happened and rush hour was light that day.

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2018 GMC Terrain Overview

The 2018 GMC Terrain is a compact SUV that seats up to five passengers. It competes with the Ford Escape, Honda CR-V, and Toyota RAV4. This year, it has been redesigned.

Four trims are available: the SL, SLE, SLT, and Denali.

The Terrain has three turbocharged engine options including a 2.0-liter turbo-diesel. Front wheel drive is standard, while all-wheel drive is optional.

More information coming soon.