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154 listings
- $34,450MSRP $35,885
- Exterior color: Ebony Twilight MetallicEbony Twilight Metallic
- Interior color: After Dark leatheretteAfter Dark leatherette
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
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Located in Saint Louis, MO / 29 miles away from O Fallon, IL
Recent Arrival! $1,435 off MSRP!2026 GMC Terrain Ebony Twilight MetallicThe listed Prices do not include additional fees and costs of closing, includi...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG5TL262097
Stock: BG35780
Listed since: 09-16-2025 - $31,094MSRP $32,390
- Exterior color: Rapids MetallicRapids Metallic
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
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Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,296 off MSRP!2026 GMC Terrain Rapids MetallicThe listed Prices do not include additional fees and costs of closing, including government fees and t...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG0TL246695
Stock: BG35758
Listed since: 08-29-2025 - $42,706MSRP $44,485
- Exterior color: Sterling MetallicSterling Metallic
- Interior color: After Dark leatherAfter Dark leather
- 5 Seats, 24 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,779 off MSRP!2026 GMC Terrain Sterling MetallicThe listed Prices do not include additional fees and costs of closing, including government fees and...
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALZEG7TL216669
Stock: BG35736
Listed since: 08-07-2025 - $38,573MSRP $40,180
- Exterior color: Volcanic Red TintcoatVolcanic Red Tintcoat
- Interior color: After Dark leatheretteAfter Dark leatherette
- 5 Seats, 24 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,607 off MSRP!2026 GMC Terrain Volcanic Red TintcoatThe listed Prices do not include additional fees and costs of closing, including government fees...
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALUEG5TL218133
Stock: BG35750
Listed since: 09-09-2025 - $34,450MSRP $35,885
- Exterior color: Sterling MetallicSterling Metallic
- Interior color: After Dark leatheretteAfter Dark leatherette
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
Recent Arrival! $1,435 off MSRP!2026 GMC Terrain Sterling MetallicThe listed Prices do not include additional fees and costs of closing, including gov...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG6TL259354
Stock: BG35766
Listed since: 09-11-2025 - $33,355MSRP $34,745
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark leatheretteAfter Dark leatherette
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,390 off MSRP!2026 GMC Terrain Summit WhiteThe listed Prices do not include additional fees and costs of closing, including government fees and taxe...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG7TL235175
Stock: BG35759
Listed since: 08-29-2025 - $34,450MSRP $35,885
- Exterior color: Ebony Twilight MetallicEbony Twilight Metallic
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
Recent Arrival! $1,435 off MSRP!2026 GMC Terrain Ebony Twilight MetallicThe listed Prices do not include additional fees and costs of closing, includi...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEGXTL271961
Stock: BG35771
Listed since: 09-15-2025 - $30,619MSRP $31,895
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
Recent Arrival! $1,276 off MSRP!2026 GMC Terrain Summit WhiteThe listed Prices do not include additional fees and costs of closing, including governme...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG8TL273112
Stock: BG35778
Listed since: 09-15-2025 - $30,619MSRP $31,895
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,276 off MSRP!2026 GMC Terrain Summit WhiteThe listed Prices do not include additional fees and costs of closing, including government fees and taxe...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG6TL247348
Stock: BG35762
Listed since: 09-04-2025 - $40,157MSRP $41,830
- Exterior color: Sterling MetallicSterling Metallic
- Interior color: Forest Storm w/Mahogany Accents leatherette/clothForest Storm w/Mahogany Accents leatherette/cloth
- 5 Seats, 24 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,673 off MSRP!2026 GMC Terrain Sterling MetallicThe listed Prices do not include additional fees and costs of closing, including government fees and...
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALYEG4TL207325
Stock: BG35737
Listed since: 08-05-2025 - $34,594MSRP $36,035
- Exterior color: Volcanic Red TintcoatVolcanic Red Tintcoat
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
Recent Arrival! $1,441 off MSRP!2026 GMC Terrain Volcanic Red TintcoatThe listed Prices do not include additional fees and costs of closing, including...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG9TL268548
Stock: BG35775
Listed since: 09-15-2025 - $33,974MSRP $35,390
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
Recent Arrival! $1,416 off MSRP!2026 GMC Terrain Summit WhiteThe listed Prices do not include additional fees and costs of closing, including governme...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG2TL260517
Stock: BG35785
Listed since: 09-15-2025 - $30,043MSRP $31,295
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 26 City / 28 Hwy MPG
- Lou Fusz Buick GMC (29 mi away)(4)
Close
Located in Saint Louis, MO / 29 miles away from O Fallon, IL
$1,252 off MSRP!2026 GMC Terrain Summit WhiteThe listed Prices do not include additional fees and costs of closing, including government fees and taxe...
Features and Specs:
27 Combined MPG (26 City/28 Highway)
Listing Information:
VIN: 3GKALMEG8TL101596
Stock: BG35701
Listed since: 06-02-2025 - New Listing$35,989MSRP $35,640
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
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Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALUEG2TL285708
Stock: 285708
Listed since: 09-20-2025 - Arriving Soon$36,484MSRP $36,135
- Exterior color: Riverstone MetallicRiverstone Metallic
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALUEG0TL285478
Stock: 285478
Listed since: 09-18-2025 - Arriving Soon$46,883MSRP $46,534
- Exterior color: Ebony Twilight MetallicEbony Twilight Metallic
- Interior color: After Dark leatherAfter Dark leather
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALZEG5TL275820
Stock: 275820
Listed since: 09-10-2025 - Arriving Soon$46,888MSRP $46,539
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark leatherAfter Dark leather
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALZEG0TL273134
Stock: 273134
Listed since: 09-06-2025 - Arriving Soon$36,484MSRP $36,135
- Exterior color: Ebony Twilight MetallicEbony Twilight Metallic
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Recent Arrival! Ebony Twilight Metallic 2026 GMC Terrain Elevation AWD 8-Speed Automatic with Overdrive 1.5L DOHC
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALUEGXTL265416
Stock: 263050
Listed since: 09-22-2025 - Arriving Soon$46,883MSRP $46,534
- Exterior color: Sterling MetallicSterling Metallic
- Interior color: After Dark leatherAfter Dark leather
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALZEG8TL274967
Stock: 274967
Listed since: 09-09-2025 - Arriving Soon$47,383MSRP $47,034
- Exterior color: Downpour MetallicDownpour Metallic
- Interior color: Light Ash Gray/Very Dark Atmosphere leatherLight Ash Gray/Very Dark Atmosphere leather
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALZEG9TL276498
Stock: 276498
Listed since: 09-10-2025 - Arriving Soon$35,539MSRP $35,190
- Exterior color: Summit WhiteSummit White
- Interior color: After Dark clothAfter Dark cloth
- 5 Seats, 24 City / 28 Hwy MPG
- Sapaugh GM Country (35 mi away)(2)
Close
Located in Herculaneum, MO / 35 miles away from O Fallon, IL
Features and Specs:
25 Combined MPG (24 City/28 Highway)
Listing Information:
VIN: 3GKALUEG0TL258376
Stock: 258376
Listed since: 08-26-2025
Showing 127 - 147 out of 154 listings
Consumer Reviews for the GMC Terrain
Read recent reviews for the GMC Terrain
The Ultimate Terrain Tamer: 2025 GMC Terrain
Jdbutts, 02/27/2025
2025 GMC Terrain Elevation 4dr SUV (1.5L 4cyl Turbo CVT)
From the moment I got behind the wheel of my 2025 GMC Terrain AWD with the Technology Package, I knew I had made the right choice. This SUV is the perfect blend of style, capability, and cutting-edge features.
The all-wheel-drive system provides a confident and smooth ride, whether on highways or rougher terrain. The Technology Package takes the experience to the next level, with an … intuitive infotainment system, a crystal-clear head-up display, and advanced driver-assist features that make every drive feel effortless. The interior is both sleek and spacious, with premium materials that give it a luxury feel without the luxury price tag.
Whether navigating city streets or exploring the great outdoors, the 2025 GMC Terrain proves to be the perfect companion. This SUV isn’t just a vehicle—it’s an experience. GMC knocked it out of the park!
| Trim | MPG | Engine | Starting Price |
|---|---|---|---|
| 2026 GMC Terrain Elevation 4dr SUV (1.5L 4cyl Turbo CVT) | 26 - 28 | 4-cylinders (gas) | $31,295 |
| 2026 GMC Terrain Denali 4dr SUV AWD (1.5L 4cyl Turbo 8A) | 24 - 28 | 4-cylinders (gas) | $44,485 |
| 2026 GMC Terrain Elevation 4dr SUV AWD (1.5L 4cyl Turbo 8A) | 24 - 28 | 4-cylinders (gas) | $35,190 |
| 2026 GMC Terrain AT4 4dr SUV AWD (1.5L 4cyl Turbo 8A) | 24 - 28 | 4-cylinders (gas) | $41,830 |
More about the GMC Terrain
Edmunds has 154 New GMC Terrains for sale near you, including a 2026 Terrain Elevation SUV and a 2026 Terrain Denali SUV ranging in price from $31,295 to $47,034.
How much is a new 2026 GMC Terrain in O Fallon, IL?
- A new 2026 GMC Terrain starts at $31,295 (including destination charge) in O Fallon, IL. Prices will go up based on the trim level you choose and any options you add. Keep in mind that prices can also vary from one state to another and even from one dealership to the next.
How much does a 2026 GMC Terrain SUV cost in O Fallon, IL?
- A new 2026 GMC Terrain SUV starts at $31,295 in O Fallon, IL. Prices will vary depending on what trim level you choose. Each state may have different pricing, so make sure you enter your correct ZIP code on Edmunds.
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