Used 2018 GMC Terrain for Sale near Denver, CO
76 results
CarGurus Analysis:
2018 GMC Terrain
With 85 currently listed for sale near Denver, CO and an average price of $14,467.00, 29.4% of 2018 GMC Terrains for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 GMC Terrain 4.71 / 5 stars.
83.5% of 2018 Terrain models on CarGurus are accident-free.
The 2018 GMC Terrain features a range of engine options, improved interior materials, and modern technology integration, despite some criticisms about its styling and overall value.
CarGurus Analysis: 2018 GMC Terrain
overall

Summary
With 85 currently listed for sale near Denver, CO and an average price of $14,467.00, 29.4% of 2018 GMC Terrains for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 GMC Terrain 4.71 / 5 stars.
83.5% of 2018 Terrain models on CarGurus are accident-free.
The 2018 GMC Terrain features a range of engine options, improved interior materials, and modern technology integration, despite some criticisms about its styling and overall value.
Why it stands out
The 2018 GMC Terrain attempts to appeal with its redesigned look and a more refined interior compared to its predecessor. It offers attractive features such as a spacious cabin and a variety of trim levels and powertrains, including an impressive 2.0-liter turbo engine that delivers 252 horsepower. However, the Terrain is marked by mixed reviews, particularly regarding its styling, which some find less appealing than the original bold design. Reviewers appreciate the Terrain's comfortable driving experience but express concerns about certain performance aspects, specifically its brake sensitivity and the underwhelming standard engine option. While it comes equipped with contemporary technology features including Apple CarPlay and Android Auto, the interior quality does not always match its premium price point, leaving potential buyers to weigh its merits against competitors that offer better value and features.
Other model years to consider
- Average price: $24,739.00
- Good/great deal percentage: 51.4%
- User rating: 5 / 5
- Total listings: 140
- Average price: $20,666.00
- Good/great deal percentage: 55.9%
- User rating: 4.83 / 5
- Total listings: 102
- Average price: $18,071.00
- Good/great deal percentage: 40.5%
- User rating: 5 / 5
- Total listings: 116
This analysis is based on CarGurus' proprietary market data from June 2, 2026, CarGurus experts' opinions, and generative AI.
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4.8 Overall rating
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Anonymous
Reviewed a 2018 GMC Terrain on Mar 21, 2021
It’s the Denali so it has everything you need plus more. Only thing that would make it better would be a V6 but this 2.0 turbo has major get up and go.
James A
Reviewed a 2018 GMC Terrain on May 15, 2020
The car is amazing and of great value. We purchased this vehicle for under the market value and it is in excellent condition. I did a thorough walk around and probably looked like an idiot looking for the smallest dents and scratches. The vehicle has great options, panoramic roof and good quality materials, especially for the price. What a steal my wife got!!!!
megan j
Reviewed a 2018 GMC Terrain on May 6, 2020
This car exceeded my highest expectations. Very nice ride, appropriate amount of room and has a very sporty feel. Has a lot of extra features that make it over all a very nice care. The push gear buttons will take some time to get use to but over all very very cool.
Rachel B
Reviewed a 2018 GMC Terrain on Jan 24, 2020
I like the car, but the brakes are a little sensitive and the pick-up (from a stop) can be jerky. Otherwise, it is smooth, comfortable, and a quiet ride.
2018 GMC Terrain Trims
| Trim type | MSRP |
|---|---|
| SLE Diesel AWD | $33,340 |
| SLT Diesel AWD | $35,915 |
| Denali | $37,520 |
| SLT | $31,320 |
| SLT AWD | $33,070 |
| Denali AWD | $39,270 |
| SLE AWD | $29,570 |
| SLE | $27,820 |
2018 GMC Terrain Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2018 GMC Terrain prices has changed over time.
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