Used 2018 GMC Terrain for Sale near O Fallon, MO
139 results
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 139,395
- Stock #:
- KT0646-1
- VIN:
- 3GKALSEX3JL252072
Sponsored by Suntrup Kia South
2018 GMC Terrain
Denali
139,395 mi
$13,148
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 178,869
- Stock #:
- 74642H
- VIN:
- 3GKALMEV7JL407992
Sponsored Listing
2018 GMC Terrain
SLE
178,869 mi
$8,353
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 59,131
- Stock #:
- P17261
- VIN:
- 3GKALMEV6KL369219
Sponsored Listing
2019 GMC Terrain
SLE
59,131 mi
$17,418
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 139,395
- Stock #:
- KT0646-1
- VIN:
- 3GKALSEX3JL252072
2018 GMC Terrain
Denali
139,395 mi
$13,148
- Year:
- 2017
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 182 hp 2.4L I4
- Exterior color:
- Graphite Gray Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black Cloth
- Transmission:
- Automatic
- Mileage:
- 152,588
- Stock #:
- C250219A
- VIN:
- 2GKALMEK0H6299669
2017 GMC Terrain
SLE1
152,588 mi
$8,399
- Year:
- 2017
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 301 hp 3.6L V6
- Exterior color:
- White Frost
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 113,617
- Stock #:
- G26751A
- VIN:
- 2GKFLRE37H6182697
2017 GMC Terrain
Denali
113,617 mi
$13,899
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 59,131
- Stock #:
- P17261
- VIN:
- 3GKALMEV6KL369219
2019 GMC Terrain
SLE
59,131 mi
$17,418
- Year:
- 2017
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 182 hp 2.4L I4
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 116,417
- Stock #:
- 75169
- VIN:
- 2GKALNEK1H6179367
2017 GMC Terrain
SLE2
116,417 mi
$10,220
- Year:
- 2017
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 182 hp 2.4L I4
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Gasoline
- Transmission:
- 6-Speed Automatic
- Mileage:
- 103,344
- Stock #:
- 118553
- VIN:
- 2GKFLUEK1H6118553
2017 GMC Terrain
SLT AWD
103,344 mi
$9,750
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 178,869
- Stock #:
- 74642H
- VIN:
- 3GKALMEV7JL407992
2018 GMC Terrain
SLE
178,869 mi
$8,353
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Smokey Quartz Metallic
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 106,236
- Stock #:
- PX10525
- VIN:
- 3GKALMEV1KL292369
-$527
2019 GMC Terrain
SLE
106,236 mi
$13,521
$12,994
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 139,295
- Stock #:
- V10844
- VIN:
- 3GKALXEX1KL274375
2019 GMC Terrain
Denali AWD
139,295 mi
$14,950
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Quartz
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 103,570
- Stock #:
- R1024A
- VIN:
- 3GKALMEV7KL130875
2019 GMC Terrain
SLE
103,570 mi
$15,230
CarGurus Analysis:
2018 GMC Terrain
With 1,914 currently listed for sale and an average price of $14,817.00, 32.7% 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.
64.1% of 2018 Terrain models on CarGurus are accident free.
The 2018 GMC Terrain features a redesigned, more conservatively styled appearance, multiple engine options, and improved interior amenities.
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Gray
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic Overdrive
- Mileage:
- 85,871
- Stock #:
- 344478
- VIN:
- 3GKALVEX7JL344478
2018 GMC Terrain
SLT AWD
85,871 mi
$18,025
- Year:
- 2017
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 182 hp 2.4L I4
- Exterior color:
- Quicksilver Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Light Titanium
- Transmission:
- Automatic
- Mileage:
- 136,544
- Stock #:
- 118EM
- VIN:
- 2GKALMEK1H6285487
2017 GMC Terrain
SLE1
136,544 mi
$8,800
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 72,685
- Stock #:
- JL267013
- VIN:
- 3GKALSEX7JL267013
-$600
2018 GMC Terrain
Denali
72,685 mi
$15,998
$15,398
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Blue Steel Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum/Taupe Leather)
- Transmission:
- Automatic
- Mileage:
- 75,871
- Stock #:
- 48204A
- VIN:
- 3GKALXEX1KL262663
2019 GMC Terrain
Denali AWD
75,871 mi
$21,600
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Medium Ash Gray/Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 84,508
- Stock #:
- WJ6871T
- VIN:
- 3GKALPEV2KL256871
2019 GMC Terrain
SLT
84,508 mi
$16,024
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Red
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 111,367
- Stock #:
- 7699
- VIN:
- 3GKALMEV8KL213182
2019 GMC Terrain
SLE
111,367 mi
$14,709
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Smokey Quartz Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 36,379
- Stock #:
- 15173MJH
- VIN:
- 3GKALXEX9KL202985
2019 GMC Terrain
Denali AWD
36,379 mi
$23,984
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Black
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- 9-Speed Automatic
- Mileage:
- 171,940
- Stock #:
- 158821
- VIN:
- 3GKALXEX1JL158821
2018 GMC Terrain
Denali AWD
171,940 mi
$9,959
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Red Quartz Tintcoat
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 82,787
- Stock #:
- 27268G
- VIN:
- 3GKALXEX3JL336373
2018 GMC Terrain
Denali AWD
82,787 mi
$15,954
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Coppertino Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 101,657
- Stock #:
- 1-24764BZ
- VIN:
- 3GKALVEX0JL169961
Sponsored Listing
2018 GMC Terrain
SLT AWD
101,657 mi
$15,910
CarGurus Analysis: 2018 GMC Terrain
overall
Summary
With 1,914 currently listed for sale and an average price of $14,817.00, 32.7% 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.
64.1% of 2018 Terrain models on CarGurus are accident free.
The 2018 GMC Terrain features a redesigned, more conservatively styled appearance, multiple engine options, and improved interior amenities.
Why it stands out
The 2018 GMC Terrain represents an evolution in both styling and functionality for GMC's compact crossover SUV lineup. This model boasts a completely redesigned exterior that, while softer and more subdued than its predecessor, meets modern tastes while still aiming to appeal to a broad audience. Under the hood, the Terrain offers multiple engine options including a responsive 2.0-liter turbocharged engine, providing a commendable 252 horsepower, which enhances the driving experience. Despite its redesign, some owners express concerns about performance nuances, such as brake sensitivity and power delivery in certain situations. The vehicle's interior, now with a focus on quality and functionality, includes an 8-inch touchscreen with updated IntelliLink technology, promoting smartphone integration through Apple CarPlay and Android Auto. However, critiques regarding its overall value proposition compared to competitors like the Honda CR-V are noteworthy, especially considering safety ratings and interior material quality.
Other model years to consider
- Average price: $24,923.00
- Good/great deal percentage: 35.0%
- User rating: 5 / 5
- Total listings: 5,658
- Average price: $25,057.00
- Good/great deal percentage: 35.3%
- User rating: 5 / 5
- Total listings: 4,970
- Average price: $22,917.00
- Good/great deal percentage: 33.7%
- User rating: 4.83 / 5
- Total listings: 3,503
This analysis is based on CarGurus' proprietary market data from June 29, 2026, CarGurus experts' opinions, and generative AI.
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4.8 Overall rating
Filter by rating
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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