New & Used 2026 GMC Terrain for Sale near O Fallon, IL

266 results

O Fallon, IL

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2025 GMC Terrain

Elevation AWD

24,119 miles

$25,987

Good Deal

Chesterfield, MO

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:: White
Combined gas mileage:: 26 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: Automatic
Mileage:: 24,119
Stock number:: PSL253636
VIN:: 3GKALUEGXSL253636

2025 GMC Terrain

Elevation AWD

22,588 miles

$25,987

Good Deal

Chesterfield, MO

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:: White
Combined gas mileage:: 26 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: Automatic
Mileage:: 22,588
Stock number:: RSL273048
VIN:: 3GKALUEG5SL273048

2025 GMC Terrain

Elevation AWD

10,979 miles

$29,998

Fair Deal

Saint Peters, MO

40 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:: Gray
Combined gas mileage:: 26 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: Automatic
Mileage:: 10,979
Stock number:: 26524165
VIN:: 3GKALUEG7SL267669

2025 GMC Terrain

Elevation AWD

24,119 miles

$25,987

Good Deal

Chesterfield, MO

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:: White
Combined gas mileage:: 26 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: Automatic
Mileage:: 24,119
Stock number:: PSL253636
VIN:: 3GKALUEGXSL253636

2025 GMC Terrain

Elevation AWD

22,588 miles

$25,987

Good Deal

Chesterfield, MO

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:: White
Combined gas mileage:: 26 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: Automatic
Mileage:: 22,588
Stock number:: RSL273048
VIN:: 3GKALUEG5SL273048

2025 GMC Terrain

Elevation AWD

8,729 miles

$28,989

Fair Deal

Certified Pre-Owned

Herculaneum, MO

37 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
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 8,729
Stock number:: 2540955
VIN:: 3GKALUEG8SL200630

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2026 GMC Terrain

New car | MSRP $32,390

$30,267

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:: Sterling Metallic
Combined gas mileage:: 27 MPG
Fuel type:: Gasoline
Mileage:: 3
Stock number:: G4578
VIN:: 3GKALMEGXTL273130

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2026 GMC Terrain

New car | MSRP $34,885

$30,792

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:: Riverstone Metallic
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 2,424
Stock number:: L26291
VIN:: 3GKALUEG1TL209994

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2026 GMC Terrain

New car | MSRP $32,885

$28,874

Collinsville, IL

8 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:: Sterling Metallic
Combined gas mileage:: 27 MPG
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: Continuously Variable Transmission
Mileage:: 2,142
Stock number:: L26204
VIN:: 3GKALMEG7TL166259

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2026 GMC Terrain

New car | MSRP $34,885

$30,792

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:: Black (Ebony Twilight Metallic)
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 2,160
Stock number:: L26200
VIN:: 3GKALUEG2TL167769

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2026 GMC Terrain

New car | MSRP $31,790

$29,674

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

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2026 GMC Terrain

New car

$41,678

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

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2025 GMC Terrain

New car | MSRP $33,270

$28,976

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:: 3,976
Stock number:: G7053
VIN:: 3GKALMEG8SL290796

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2026 GMC Terrain

New car | MSRP $34,885

$30,792

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:: Black (Ebony Twilight Metallic)
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 2,209
Stock number:: L26292
VIN:: 3GKALUEG2TL209700

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2026 GMC Terrain

New car | MSRP $33,940

$29,927

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:: Volcanic Red Tintcoat
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 2,267
Stock number:: L26163
VIN:: 3GKALUEG1TL161073

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2026 GMC Terrain

New car | MSRP $32,390

$30,267

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:: G4569
VIN:: 3GKALMEG2TL273719

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2026 GMC Terrain

New car | MSRP $47,334

$44,980

Litchfield, IL

42 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:: White
Fuel type:: Gasoline
Interior color:: Lt Ash Gry /Very Dk Atmos
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 321
Stock number:: B11258
VIN:: 3GKALZEG1TL347287

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2025 GMC Terrain

New car | MSRP $38,035

$33,995

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:: 4,377
Stock number:: G2542
VIN:: 3GKALUEG8SL279622

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2026 GMC Terrain

New car | MSRP $45,885

$42,848

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:: Sterling Metallic
Fuel type:: Gasoline
Interior color:: After Dark
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 7
Stock number:: L263580
VIN:: 3GKALZEG9TL387410

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2026 GMC Terrain

New car | MSRP $32,390

$30,267

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:: Riverstone Metallic
Combined gas mileage:: 27 MPG
Fuel type:: Gasoline
Mileage:: 4
Stock number:: G4570
VIN:: 3GKALMEG3TL272613

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2026 GMC Terrain

New car | MSRP $41,335

$38,439

Litchfield, IL

42 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)
Fuel type:: Gasoline
Interior color:: Forest Storm W/Mahogany Accents
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 203
Stock number:: B11157
VIN:: 3GKALYEG2TL225418

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2026 GMC Terrain

New car | MSRP $36,240

$33,486

Collinsville, IL

8 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
Transmission:: Continuously Variable Transmission
Mileage:: 7
Stock number:: L263430
VIN:: 3GKALMEG8TL373727

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2026 GMC Terrain

New car | MSRP $46,350

$43,960

O'Fallon, MO

47 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:: Sterling
Fuel type:: Gasoline
Interior color:: After Dk Perforated Lth-A
Transmission:: 8-Speed Automatic Overdrive
Stock number:: G26373
VIN:: 3GKALZEG4TL349390

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2026 GMC Terrain

New car | MSRP $40,260

$37,461

Columbia, IL

19 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 W/Mahogany Accents
Transmission:: 8-Speed Automatic Overdrive
Mileage:: 2
Stock number:: G8082
VIN:: 3GKALYEGXTL211914

FAQs

2026 GMC Terrain FAQs

How much does the 2026 GMC Terrain cost in O Fallon, IL?

The average 2026 GMC Terrain costs about $34,047.06. The average price has decreased by -4.6% since last year. The 31 for sale near O Fallon, IL on CarGurus, range from $25,243 to $31,998 in price.

How many 2026 GMC Terrain vehicles in O Fallon, IL have no reported accidents or damage?

28 out of 31 for sale near O Fallon, IL have no reported accidents or damage.

What is the fuel economy of the 2026 GMC Terrain?

Depending on the engine and options, the 2026 GMC Terrain gets between 25 and 26 MPG (or EV battery range).

What fuel types are available?

Gasoline engines are available.

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