Used 2020 GMC Terrain for SaleNationwide
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 50,364
- Stock #:
- MT25136B
- VIN:
- 3GKALSEX7LL329934
-$1,427
2020 GMC Terrain
Denali FWD
50,364 mi
$22,692
$22,164
- Year:
- 2021
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 27 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 89,361
- Stock #:
- D6737A
- VIN:
- 3GKALPEV0ML325995
2021 GMC Terrain
SLT FWD
89,361 mi
$17,289
- Year:
- 2020
- 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:
- Automatic
- Mileage:
- 92,453
- Stock #:
- ALN1558
- VIN:
- 3GKALPEV1LL140126
-$572
2020 GMC Terrain
SLT FWD
92,453 mi
$15,989
$15,417
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Summit White Gaz
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black H1t
- Transmission:
- Automatic
- Mileage:
- 43,239
- Stock #:
- 62105U
- VIN:
- 3GKALTEV3KL312485
2019 GMC Terrain
SLE AWD
43,239 mi
$18,790
- Year:
- 2021
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Gray
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- 9-Speed Automatic Overdrive
- Mileage:
- 81,384
- Stock #:
- 26-123
- VIN:
- 3GKALVEV2ML350966
-$700
2021 GMC Terrain
SLT AWD
81,384 mi
$19,649
$18,949
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 110,107
- Stock #:
- 6GM1011T
- VIN:
- 3GKALVEV9KL162359
-$1,484
2019 GMC Terrain
SLT AWD
110,107 mi
$15,579
$14,095
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Silver
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 109,553
- Stock #:
- 6GM1046T
- VIN:
- 3GKALVEX2LL132994
-$575
2020 GMC Terrain
SLT AWD
109,553 mi
$15,549
$14,974
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Quicksilver Metallic
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 122,767
- Stock #:
- 26300A
- VIN:
- 3GKALPEV5LL299490
-$500
2020 GMC Terrain
SLT FWD
122,767 mi
$13,689
$13,189
- Year:
- 2020
- 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:
- Medium Ash Gray/Jet Black
- Transmission:
- Automatic
- Mileage:
- 119,254
- Stock #:
- 272572
- VIN:
- 3GKALPEV4LL272572
-$316
2020 GMC Terrain
SLT FWD
119,254 mi
$14,621
$14,305
- Year:
- 2020
- 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:
- 80,185
- Stock #:
- CU263270
- VIN:
- 3GKALMEV0LL263270
2020 GMC Terrain
SLE FWD
80,185 mi
$15,925
- Year:
- 2021
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 58,444
- Stock #:
- S417961A
- VIN:
- 3GKALTEVXML348645
2021 GMC Terrain
SLE AWD
58,444 mi
$17,245
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Graphite Gray Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 91,106
- Stock #:
- P8969A
- VIN:
- 3GKALVEV8KL309657
2019 GMC Terrain
SLT AWD
91,106 mi
$15,665
- 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:
- 106,171
- Stock #:
- T26334A
- VIN:
- 3GKALXEX6KL228380
-$1,000
2019 GMC Terrain
Denali AWD
106,171 mi
$15,393
$14,393
CarGurus Analysis:
2020 GMC Terrain
With 2,361 currently listed for sale and an average price of $18,047.00, 33.4% of 2020 GMC Terrains for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2020 GMC Terrain 4.43 / 5 stars.
70.1% of 2020 Terrain models on CarGurus are accident free.
- Year:
- 2021
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 27 MPG
- Fuel type:
- Gasoline
- Interior color:
- Medium Ash Gray/Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 85,022
- Stock #:
- L332620T
- VIN:
- 3GKALPEV3ML332620
-$500
2021 GMC Terrain
SLT FWD
85,022 mi
$17,396
$16,896
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Quicksilver Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 62,127
- Stock #:
- L157977T
- VIN:
- 3GKALVEX8KL157977
2019 GMC Terrain
SLT AWD
62,127 mi
$18,696
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 91,328
- Stock #:
- 03T1535A
- VIN:
- 3GKALTEV4KL255374
2019 GMC Terrain
SLE AWD
91,328 mi
$14,908
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 31,408
- Stock #:
- L26049A
- VIN:
- 3GKALSEX5LL345842
-$1,795
2020 GMC Terrain
Denali FWD
31,408 mi
$25,894
$24,998
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Quicksilver Metallic
- Fuel type:
- Gasoline
- Interior color:
- Medium Ash Gray/Jet Black
- Transmission:
- 9-Speed Automatic Overdrive
- Mileage:
- 57,251
- Stock #:
- KL270258
- VIN:
- 3GKALPEXXKL270258
2019 GMC Terrain
SLT
57,251 mi
$18,695
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 91,169
- Stock #:
- KL147413
- VIN:
- 3GKALVEV2KL147413
2019 GMC Terrain
SLT AWD
91,169 mi
$16,729
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- White Frost Tricoat (g1w)
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum/Taupe (hs4))
- Transmission:
- 9-Speed Automatic
- Mileage:
- 76,636
- Stock #:
- 50004A
- VIN:
- 3GKALXEX4LL227424
2020 GMC Terrain
Denali AWD
76,636 mi
$20,990
- Year:
- 2019
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 59,323
- Stock #:
- P2077A
- VIN:
- 3GKALTEV3KL125876
-$1,172
2019 GMC Terrain
SLE AWD
59,323 mi
$18,022
$16,850
- Year:
- 2021
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 27 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 115,877
- Stock #:
- 251799B
- VIN:
- 3GKALPEV0ML308632
2021 GMC Terrain
SLT FWD
115,877 mi
$15,706
- Year:
- 2021
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Front-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Blue
- Combined gas mileage:
- 27 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 17,445
- Stock #:
- O07107A
- VIN:
- 3GKALPEV7ML375065
2021 GMC Terrain
SLT FWD
17,445 mi
$20,588
CarGurus Analysis: 2020 GMC Terrain
Summary
With 2,361 currently listed for sale and an average price of $18,047.00, 33.4% of 2020 GMC Terrains for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2020 GMC Terrain 4.43 / 5 stars.
70.1% of 2020 Terrain models on CarGurus are accident free.
Why it stands out
The 2020 GMC Terrain stands out as a compact SUV that leans more toward comfort and premium touches than outright utility. For 2020, the Terrain lineup was updated and important safety technology such as automatic emergency braking, forward collision alert, lane-centering, lane-departure warning and front pedestrian braking became standard. That makes it appealing to buyers who want a small SUV with a strong safety feature set and a more upscale feel than many rivals.
It also offers a useful mix of powertrain choices for shoppers who care about efficiency or capability. The standard 1.5-liter turbocharged engine produces 170 horsepower, while the optional 252-horsepower 2.0-liter turbocharged four-cylinder is the choice for buyers who want more performance. The Terrain’s cabin benefits from GMC’s infotainment technology, with many models featuring an eight-inch touchscreen, and Apple CarPlay and Android Auto are standard. The 2020 Terrain Denali is especially notable because it pairs the more powerful 252-horsepower engine with the upgraded suspension package that Denali received that year.
There are trade-offs, though. The 1.5-liter engine’s highway acceleration isn’t very good, and cargo space trails that of some popular rivals. Buyers who prioritize maximum towing capacity or stronger performance will likely prefer the 2.0-liter engine, while those focused on value may appreciate that late-model Terrains generally cost less than some Japanese competitors.
Other model years to consider
- Average price: $24,730.00
- Good/great deal percentage: 34.6%
- User rating: 5 / 5
- Total listings: 5,613
- Average price: $24,895.00
- Good/great deal percentage: 35.2%
- User rating: 5 / 5
- Total listings: 4,896
- Average price: $22,530.00
- Good/great deal percentage: 33.6%
- User rating: 4.83 / 5
- Total listings: 3,468
This analysis is based on CarGurus' proprietary market data from August 10, 2026, CarGurus experts' opinions, and generative AI.
4.5 Overall rating
Filter by rating
William O
Reviewed a 2020 GMC SLT AWD on Aug 5, 2026
Loved the car. Lots of features for a mid sized SUV. Roomier than expected inside
Anonymous
Reviewed a 2020 GMC Terrain on Sep 22, 2020
It’s extremely comfortable, and I love the safety features! Spacious, sharp, and drives great!
Anonymous
Reviewed a 2020 GMC Terrain on Feb 6, 2023
This Denali has everything, full loaded and I love it. The entertainment system is great and is very intuitive. Feels like a luxury car inside and the ride is smooth an comfortable. Perfect crossover for someone who really likes the perks.
T. D. R
Reviewed a 2020 GMC Terrain on Oct 27, 2021
This SUV is a great vehicle. I love the appearance and safety features. The vehicle is also affordable.
2020 GMC Terrain Trims
| Trim type | MSRP |
|---|---|
| Denali FWD | $38,300 |
| Denali AWD | $39,900 |
| SLT FWD | $31,200 |
| SLE AWD | $30,000 |
| SLE FWD | $28,400 |
| SLT AWD | $32,800 |
2020 GMC Terrain Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2020 GMC Terrain prices has changed over time.
See more price trendsFAQs
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