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  • Summit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLE

    $17,425

    79,495 mi.
    Est. $326/mo

    Suntrup Nissan

    4.8
    Check Availability
    St. Louis, MO (9 mi)
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  • Quicksilver Metallic 2021 GMC Terrain SLEQuicksilver Metallic 2021 GMC Terrain SLEQuicksilver Metallic 2021 GMC Terrain SLEQuicksilver Metallic 2021 GMC Terrain SLEQuicksilver Metallic 2021 GMC Terrain SLEQuicksilver Metallic 2021 GMC Terrain SLE

    $16,495

    89,324 mi.
    Est. $308/mo

    Federico Chrysler Dodge Jeep RAM

    4.7
    Check Availability
    Wood River, IL (23 mi)
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  • Satin Steel Metallic 2021 GMC Terrain SLTSatin Steel Metallic 2021 GMC Terrain SLTSatin Steel Metallic 2021 GMC Terrain SLTSatin Steel Metallic 2021 GMC Terrain SLTSatin Steel Metallic 2021 GMC Terrain SLTSatin Steel Metallic 2021 GMC Terrain SLT

    $21,995

    58,106 mi.
    Est. $411/mo

    DriveTime of St. Louis-North County

    4.9
    Check Availability
    St. Louis, MO (11 mi)
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  • Summit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLE

    $14,800

    $450
    108,802 mi.
    Est. $277/mo

    Beuckman Ford

    4.6
    Check Availability
    Ellisville, MO (12 mi)
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  • Ebony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLT

    $18,777

    $218
    74,360 mi.
    Est. $351/mo

    St. Charles Hyundai

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    St. Peters, MO (17 mi)
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  • Summit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLE

    $22,535

    45,012 mi.
    Est. $421/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (28 mi)
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  • Graphite Gray Metallic 2021 GMC Terrain SLEGraphite Gray Metallic 2021 GMC Terrain SLEGraphite Gray Metallic 2021 GMC Terrain SLEGraphite Gray Metallic 2021 GMC Terrain SLEGraphite Gray Metallic 2021 GMC Terrain SLEGraphite Gray Metallic 2021 GMC Terrain SLE

    $17,214

    95,762 mi.
    Est. $322/mo

    Clement Ford

    2.4
    Check Availability
    Wentzville, MO (27 mi)
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  • Graphite Gray Metallic 2021 GMC Terrain SLT

    $24,500

    25,192 mi.
    Est. $458/mo

    Clement Supercenter

    2.7
    Check Availability
    St. Charles, MO (15 mi)
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  • Not Priced

    90,784 mi.
    Est. $0/mo

    AutoCenters Nissan

    4.6
    Check Availability
    Herculaneum, MO (27 mi)
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  • Ebony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLT

    $18,445

    61,093 mi.
    Est. $345/mo

    Autos of Chicago

    4.4
    Check Availability
    $271 delivery from Arlington Heights, IL (271 mi)
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  • Gray 2021 GMC Terrain SLEGray 2021 GMC Terrain SLEGray 2021 GMC Terrain SLEGray 2021 GMC Terrain SLEGray 2021 GMC Terrain SLEGray 2021 GMC Terrain SLE

    $20,998

    32,755 mi.
    Est. $393/mo

    CarMax Mobile

    Check Availability
    $499 delivery to St. Louis, MO (9 mi)
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  • Satin Steel Metallic 2021 GMC Terrain SLESatin Steel Metallic 2021 GMC Terrain SLESatin Steel Metallic 2021 GMC Terrain SLESatin Steel Metallic 2021 GMC Terrain SLESatin Steel Metallic 2021 GMC Terrain SLESatin Steel Metallic 2021 GMC Terrain SLE

    $17,000

    $500
    95,895 mi.
    Est. $318/mo

    Behlmann Chrysler Dodge Jeep Ram

    4.9
    Check Availability
    Troy, MO (41 mi)
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  • Summit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLESummit White 2021 GMC Terrain SLE

    $23,500

    34,324 mi.
    Est. $439/mo

    Marshall Chevrolet

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    Winchester, IL (69 mi)
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  • Red Quartz Tintcoat 2021 GMC Terrain SLERed Quartz Tintcoat 2021 GMC Terrain SLERed Quartz Tintcoat 2021 GMC Terrain SLERed Quartz Tintcoat 2021 GMC Terrain SLERed Quartz Tintcoat 2021 GMC Terrain SLERed Quartz Tintcoat 2021 GMC Terrain SLE

    $16,473

    95,728 mi.
    Est. $308/mo

    Meier Chevrolet GMC

    Check Availability
    Sparta, IL (51 mi)
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  • Ebony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLTEbony Twilight Metallic 2021 GMC Terrain SLT

    $15,759

    117,671 mi.
    Est. $295/mo

    Pettus Ford Fredericktown

    3.8
    Check Availability
    Fredericktown, MO (74 mi)
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GMC Terrain prices by year

Model year Average price Deals
2026 GMC Terrain $36,376 4 Good deals
2024 GMC Terrain $26,109 5 Great deals
2023 GMC Terrain $24,876 12 Good deals
2022 GMC Terrain $21,121 9 Good deals
2020 GMC Terrain $19,271 13 Good deals

About the 2021 GMC Terrain

Basics

SL shown (base trim).

Seating
5
Door count
4
Drivetrain
Front-wheel drive
Combined MPG
27
Transmission
9-Speed A/T
Engine
170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel)
Side view of the 2021 GMC Terrain
FAQs

How much does the 2021 GMC Terrain cost?

The 2021 GMC Terrain price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Terrain is $18,956, with pricing starting at $8,497.

What is the MPG of the 2021 GMC Terrain?

The 2021 GMC Terrain offers up to 25 MPG in city driving and 30 MPG on the highway for a combined rating of 27 MPG.

These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle trim, driving conditions, driving habits, vehicle maintenance, and other factors.

What are some similar vehicles and competitors of the 2021 GMC Terrain?

The 2021 GMC Terrain compares to and/or competes against the following vehicles:


Is the 2021 GMC Terrain reliable?

The 2021 GMC Terrain has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Terrain owners.

Is the 2021 GMC Terrain a good SUV?

Below are the Cars.com consumer ratings for the 2021 GMC Terrain.

(26 reviews)
Rating breakdown (out of 5):
Comfort
4.7
Interior
4.7
Performance
4.4
Value
4.4
Exterior
4.8
Reliability
4.7
Ratings (26 reviews)

88% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.7
Interior
4.7
Performance
4.4
Value
4.4
Exterior
4.8
Reliability
4.7
Trims

Denali (2 styles)

Style
FWD 4dr Denali AWD 4dr Denali
Inventory price
Starting at $35,900 Starting at $37,500
Combined MPG
27 26
Engine
170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel) 170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel)

SL (1 style)

Style
FWD 4dr SL
Inventory price
Starting at $25,000
Combined MPG
27
Engine
170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel)

SLE (2 styles)

Style
FWD 4dr SLE AWD 4dr SLE
Inventory price
Starting at $28,500 Starting at $30,100
Combined MPG
27 26
Engine
170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel) 170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel)

SLT (2 styles)

Style
AWD 4dr SLT FWD 4dr SLT
Inventory price
Starting at $34,200 Starting at $32,600
Combined MPG
26 27
Engine
170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel) 170.0-hp, 1.5-liter, 4 Cylinder Engine (Gasoline Fuel)
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