Used 2021 GMC Terrain for Sale nearBoston, MA
167 vehicles found
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:
- 1.5L I4
- Exterior color:
- White Frost Tricoat
- Combined gas mileage:
- 28 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 79,750
- Stock #:
- 25390
- VIN:
- 3GKALPEV5LL289302
Sponsored by South Easton Motor Sales
2020 GMC Terrain
SLT FWD
79,750 mi
$18,494
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Graphite Gray Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Medium Ash Gray/Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 88,893
- Stock #:
- HM22528T
- VIN:
- 3GKALVEX0LL160745
Sponsored Listing
2020 GMC Terrain
SLT AWD
88,893 mi
$19,144
- 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
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 70,261
- Stock #:
- 27584HP
- VIN:
- 3GKALXEX0LL327584
Sponsored Listing
2020 GMC Terrain
Denali AWD
70,261 mi
$23,980
- 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 (Satin Steel Metallic)
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 58,231
- Stock #:
- GM3151
- VIN:
- 3GKALVEV0ML394027
-$3,000
2021 GMC Terrain
SLT AWD
58,231 mi
$23,696
$20,696
- 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:
- Gray
- Transmission:
- 9-Speed Automatic
- Mileage:
- 117,500
- VIN:
- 3GKALTEV6ML310524
2021 GMC Terrain
SLE AWD
117,500 mi
$14,399
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Smokey Quartz Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 62,475
- Stock #:
- LL137850
- VIN:
- 3GKALVEV5LL137850
2020 GMC Terrain
SLT AWD
62,475 mi
$19,163
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- White Frost Tricoat
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 41,809
- Stock #:
- 24946A
- VIN:
- 3GKALVEV1NL109465
2022 GMC Terrain
SLT AWD
41,809 mi
$25,598
- 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:
- Blue
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 80,314
- Stock #:
- 5285
- VIN:
- 3GKALVEV2ML327672
-$500
2021 GMC Terrain
SLT AWD
80,314 mi
$18,294
$17,794
- Year:
- 2020
- 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:
- Automatic
- Mileage:
- 59,787
- Stock #:
- 90987DR
- VIN:
- 3GKALTEV4LL198045
2020 GMC Terrain
SLE AWD
59,787 mi
$19,374
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum/Dark Galvanized)
- Transmission:
- 9-Speed Automatic
- Mileage:
- 45,431
- Stock #:
- 26316A
- VIN:
- 3GKALXEV6NL301346
2022 GMC Terrain
Denali AWD
45,431 mi
$26,921
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Hunter Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum/Dark Galvanized)
- Transmission:
- 9-Speed Automatic
- Mileage:
- 40,802
- Stock #:
- F261146A
- VIN:
- 3GKALXEVXNL185682
2022 GMC Terrain
Denali AWD
40,802 mi
$26,770
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 81,233
- Stock #:
- 26574U
- VIN:
- 3GKALVEX8LL285976
2020 GMC Terrain
SLT AWD
81,233 mi
$19,958
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Marine Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 28,472
- Stock #:
- NL310196
- VIN:
- 3GKALTEV2NL310196
2022 GMC Terrain
SLE AWD
28,472 mi
$21,970
CarGurus Analysis:
2021 GMC Terrain
With 168 currently listed for sale near Boston, MA and an average price of $16,434.00, 39.9% of 2021 GMC Terrains for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 GMC Terrain 5 / 5 stars.
100.0% of 2021 Terrain models on CarGurus are accident free.
The 2021 GMC Terrain is praised for its stylish interior, smooth ride, and fuel efficiency, although some owners noted minor omissions like the lack of a standard auto wiper feature.
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 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:
- 18,964
- Stock #:
- PL11992
- VIN:
- 3GKALXEV8NL306614
2022 GMC Terrain
Denali AWD
18,964 mi
$27,758
- 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:
- 77,272
- Stock #:
- 5319
- VIN:
- 3GKALPEVXML333053
2021 GMC Terrain
SLT FWD
77,272 mi
$19,094
- 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:
- 136,525
- Stock #:
- P388462
- VIN:
- 3GKALVEVXML388462
2021 GMC Terrain
SLT AWD
136,525 mi
$13,614
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 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:
- 35,574
- Stock #:
- HM689
- VIN:
- 3GKALXEV5NL295054
2022 GMC Terrain
Denali AWD
35,574 mi
$27,295
- 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:
- Black (Ebony Twilight Metallic)
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 86,490
- Stock #:
- CA5049
- VIN:
- 3GKALVEVXML396352
2021 GMC Terrain
SLT AWD
86,490 mi
$19,541
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Summit White
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 32,818
- Stock #:
- N5506B
- VIN:
- 3GKALTEV5NL249359
2022 GMC Terrain
SLE AWD
32,818 mi
$21,399
- Year:
- 2022
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 170 hp 1.5L I4
- Exterior color:
- Hunter Metallic
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum/Dark Galvanized)
- Transmission:
- 9-Speed Automatic
- Mileage:
- 19,591
- Stock #:
- P1909
- VIN:
- 3GKALXEVXNL212539
2022 GMC Terrain
Denali AWD
19,591 mi
$28,544
- Year:
- 2020
- 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:
- 61,609
- Stock #:
- C0730
- VIN:
- 3GKALTEVXLL113578
2020 GMC Terrain
SLE AWD
61,609 mi
$19,400
- Year:
- 2020
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Graphite Gray Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Medium Ash Gray/Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 88,893
- Stock #:
- HM22528T
- VIN:
- 3GKALVEX0LL160745
2020 GMC Terrain
SLT AWD
88,893 mi
$19,144
- 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:
- Automatic
- Mileage:
- 69,890
- Stock #:
- 23946
- VIN:
- 3GKALPEV5LL213529
Sponsored Listing
2020 GMC Terrain
SLT FWD
69,890 mi
$19,494
CarGurus Analysis: 2021 GMC Terrain
Summary
With 168 currently listed for sale near Boston, MA and an average price of $16,434.00, 39.9% of 2021 GMC Terrains for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2021 GMC Terrain 5 / 5 stars.
100.0% of 2021 Terrain models on CarGurus are accident free.
The 2021 GMC Terrain is praised for its stylish interior, smooth ride, and fuel efficiency, although some owners noted minor omissions like the lack of a standard auto wiper feature.
Why it stands out
The 2021 GMC Terrain distinguishes itself in the compact SUV segment with its stylish design and a well-appointed interior that appeals to buyers looking for both comfort and functionality. It shares its platform with the Chevrolet Equinox, but the Terrain's more angular styling gives it a rugged appearance, especially in the AT4 trim designed for off-road capability. The Terrain is equipped with a suite of safety features and technologies, making it a solid choice for families. While it lacks a hybrid option, its fuel efficiency and smooth ride are significant advantages. The 2021 model is also noted for its reliability, with a perfect accident-free record among available listings, making it a compelling option for used car buyers.
Other model years to consider
- Average price: $25,057.00
- Good/great deal percentage: 48.5%
- User rating: 5 / 5
- Total listings: 231
- Average price: $24,353.00
- Good/great deal percentage: 58.2%
- User rating: 4.83 / 5
- Total listings: 177
- Average price: $16,615.00
- Good/great deal percentage: 30.1%
- User rating: 5 / 5
- Total listings: 193
This analysis is based on CarGurus' proprietary market data from July 14, 2026, CarGurus experts' opinions, and generative AI.
5.0 Overall rating
Filter by rating
Deborah W
Reviewed a 2021 GMC Terrain on Nov 20, 2023
It had everything and more in the features that I was looking for. I think it was a good value for all that it offered.
Assata B
Reviewed a 2021 GMC Terrain on Apr 22, 2021
Very nice interior. Excellent options. We went with a black on black model but would have purchased this one if the other had not been available.
Destiney K
Reviewed a 2021 GMC Terrain on Oct 28, 2021
I absolutely adore my Terrain! I love everything about it. Not too big, not too small. Zero complaints. If I did have to make a suggestion I would say blind spot protection, and maybe a bigger screen that shows your speed but not deal breakers and simply just suggestions :)
Ja'Nette J
Reviewed a 2021 GMC Terrain on Apr 5, 2024
I love the Terrain! It drives great and has a smoothest ride. It also is good on gas.
2021 GMC Terrain Trims
| Trim type | MSRP |
|---|---|
| Denali FWD | $35,900 |
| Denali AWD | $37,500 |
| SLT FWD | $32,600 |
| SLE FWD | $28,500 |
| SLT AWD | $34,200 |
| SL FWD | $25,000 |
| SLE AWD | $30,100 |
2021 GMC Terrain Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2021 GMC Terrain prices has changed over time.
See more price trendsFAQs
How much does the 2021 GMC Terrain cost in Boston, MA?
How many 2021 GMC Terrain vehicles in Boston, MA have no reported accidents or damage?
What is the fuel economy of the 2021 GMC Terrain?
What fuel types are available?
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