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New GMC Terrain for Sale near O Fallon, IL

300 results
O Fallon, IL
2026 GMC Terrain Denali AWD Dave Sinclair Buick GMC

2026 GMC Terrain

New car

$41,155

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
25 MPG
Fuel type:
Gasoline
Transmission:
8-Speed Automatic
Mileage:
3
Stock number:
T260116
VIN:
3GKALZEG9TL226250

Sponsored

2026 GMC Terrain Denali AWD

2026 GMC Terrain

New car

$42,223

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
25 MPG
Fuel type:
Gasoline
Transmission:
8-Speed Automatic
Mileage:
2
Stock number:
T260074
VIN:
3GKALZEG4TL228164

Sponsored

2026 GMC Terrain Elevation AWD

2026 GMC Terrain

New car | MSRP $40,897

$39,542

Ellisville, MO
37 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Interior color:
After Dark Leather
Transmission:
Automatic
Mileage:
4
Stock number:
87064
VIN:
3GKALUEG0TL275727

Sponsored

2026 GMC Terrain Elevation FWD

2026 GMC Terrain

New car | MSRP $32,390

$30,771

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Mileage:
4
Stock number:
G4549
VIN:
3GKALMEG2TL245371

2026 GMC Terrain Elevation AWD

2026 GMC Terrain

New car

$33,788

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Interior color:
After Dark Cloth
Transmission:
Automatic
Mileage:
4
Stock number:
T260654
VIN:
3GKALUEG4TL297830

2025 GMC Terrain Elevation FWD

2025 GMC Terrain

New car | MSRP $33,270

$30,276

Columbia, IL
19 mi away
Year:
2025
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Sterling Metallic
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Interior color:
After Dark
Transmission:
Continuously Variable Transmission
Mileage:
10
Stock number:
G7053
VIN:
3GKALMEG8SL290796

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2026 GMC Terrain

New car | MSRP $34,390

$32,671

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Mileage:
4
Stock number:
G4582
VIN:
3GKALUEGXTL273645

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2026 GMC Terrain

New car

$41,159

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
25 MPG
Fuel type:
Gasoline
Interior color:
After Dark Leather
Transmission:
Automatic
Mileage:
2,909
Stock number:
RT260063
VIN:
3GKALZEG9TL223722

Preparing for a close up...

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2026 GMC Terrain

New car

$31,061

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Interior color:
Gideon Gray / After Dark Cloth
Transmission:
Continuously Variable Transmission
Mileage:
3
Stock number:
T260459
VIN:
3GKALMEG9TL301418

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2026 GMC Terrain

New car | MSRP $31,790

$30,201

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Mileage:
2,685
Stock number:
G4471
VIN:
3GKALMEG0TL153126

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car | MSRP $31,790

$30,201

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Rapids Metallic
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Mileage:
4
Stock number:
G4457
VIN:
3GKALMEG5TL144681

Preparing for a close up...

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2026 GMC Terrain

New car | MSRP $31,517

$30,556

Ellisville, MO
37 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Interior color:
After Dark Cloth
Transmission:
Continuously Variable Transmission
Mileage:
1
Stock number:
87063
VIN:
3GKALMEG7TL273554

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car | MSRP $38,425

$36,307

Litchfield, IL
42 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Volcanic Red
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Interior color:
After Dk Coretec
Transmission:
Continuously Variable Transmission
Mileage:
10
Stock number:
B11185
VIN:
3GKALMEG1TL285893

Preparing for a close up...

Photos coming soon

2025 GMC Terrain

New car | MSRP $38,035

$35,329

Centralia, IL
41 mi away
Year:
2025
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Rapids Metallic
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Interior color:
Gideon Gray / After Dark, Coretec Seat Trim
Transmission:
Automatic
Mileage:
4,375
Stock number:
G2542
VIN:
3GKALUEG8SL279622

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2026 GMC Terrain

New car | MSRP $39,995

$36,762

Collinsville, IL
8 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Fuel type:
Gasoline
Interior color:
Forest Storm
Transmission:
8-Speed Automatic Overdrive
Mileage:
2,017
Stock number:
L26049
VIN:
3GKALYEG6TL145801

Preparing for a close up...

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2026 GMC Terrain

New car | MSRP $41,570

$39,492

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
25 MPG
Fuel type:
Gasoline
Mileage:
4
Stock number:
G4460
VIN:
3GKALYEG1TL146421

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car | MSRP $31,295

$29,730

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Mileage:
13
Stock number:
G4455
VIN:
3GKALMEG0TL144426

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car | MSRP $38,185

$36,613

Highland, IL
16 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Riverstone Metallic
Fuel type:
Gasoline
Interior color:
After Dark
Transmission:
8-Speed Automatic Overdrive
Mileage:
10
Stock number:
38807
VIN:
3GKALUEG3TL281246

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car | MSRP $32,390

$30,771

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Mileage:
4
Stock number:
G4575
VIN:
3GKALMEG5TL273438

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car

$38,825

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black (Ebony Twilight Metallic)
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Interior color:
Gideon Gray / After Dark Leather
Transmission:
Automatic
Mileage:
2
Stock number:
T260426
VIN:
3GKALUEGXTL286248

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car

$35,699

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Interior color:
After Dark Leather
Transmission:
Automatic
Mileage:
5
Stock number:
T260440
VIN:
3GKALUEG3TL297219

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car | MSRP $34,390

$32,671

Belleville, IL
9 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Riverstone Metallic
Combined gas mileage:
26 MPG
Fuel type:
Gasoline
Mileage:
4
Stock number:
G4585
VIN:
3GKALUEG4TL273382

Preparing for a close up...

Photos coming soon

2026 GMC Terrain

New car

$42,678

Saint Louis, MO
25 mi away
Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Summit White
Combined gas mileage:
25 MPG
Fuel type:
Gasoline
Interior color:
After Dark Cloth
Transmission:
Automatic
Mileage:
2
Stock number:
T260647
VIN:
3GKALZEG3TL322150

  1. Home
  2. / New Cars
  3. / GMC Terrain
  4. / Illinois
  5. / O Fallon
Reviews
FAQs

4.5 Overall rating

(320 reviews)

Customers say

Overall, the GMC Terrain has garnered positive reviews across its model years, with drivers frequently appreciating its comfort, spacious interiors, and smooth driving experience. Many owners commend the extensive safety features and AWD capability, making it a reliable choice in various driving conditions. Some drivers have expressed dissatisfaction with engine power in certain models, particularly during acceleration and towing. There are also mentions of wanting enhancements in features like sound systems and seat comfort. Despite minor critiques, the Terrain is seen as a stylish and practical compact SUV with good value for many owners.

AI generated from the text of customer reviews.

What people say

AWD comfort interior performance safety
Robert S
5.0
Reviewed a 2024 GMC Terrain on Dec 03, 2024

This car had everything my wife expected. The only thing I would have liked to have on it is the rear camera mirror. This vehicle purchased had to be acceptable to my wife. Because I moved her from a Chevy Traverse down to this due to the mileage she puts on each year. This vehicle is comparable to the Chevy Equinox.

Rob D
5.0
Reviewed a 2024 GMC Terrain on May 22, 2024

Beautiful well designed car with classic styling and full of great tech!

Reuben T
5.0
Reviewed a 2023 GMC Terrain on Apr 05, 2024

Great truck. and very very nice. GMC is an American truck and it is really safe. Last for a long long time. Smooth ride of road and n the street.

Tonya R
5.0
Reviewed a 2023 GMC Terrain on May 23, 2023

This car literally saved my life! I was t-boned by a car going 60+ mph And I walked out of the trauma center with mild bruises.

steven h
5.0
Reviewed a 2024 GMC Terrain on Nov 04, 2023

Got a 2014 Denali with V6 and 355,000km. All original, bullerproof car. Still daily driver.

GMC Terrain FAQs

How much does the 2026 GMC Terrain cost?

The 2026 GMC Terrain has a starting MSRP of $30,200 and can cost up to $41,900 depending on the trim package and upgrades. The 581 new models for sale on CarGurus have an average listing price of $34,996.

What fuel types are available?

Diesel, Flex Fuel Vehicle, Gasoline engines are available.

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