Prices starting at: $30,100

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Learn More About Buying a 2026 GMC Terrain in O'Fallon

Visit O'Fallon Buick GMC for a great deal on a new 2026 GMC Terrain. Our sales team is ready to show you all of the features that you will find in the GMC Terrain and take you for a test drive in the O'Fallon Area. At our GMC dealership you will find competitive prices, a stocked inventory of 2026 GMC Terrain cars and a helpful sales team. Stop by our car dealership today and take a 2026 GMC for a spin.

2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$33,314
  • Discount$999
  • Price$32,315
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: After Dark, Premium cloth seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Denali

  • MSRP$43,535
  • Discount$1,306
  • Price$42,229
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Ebony Twilight Metallic, Interior Color: After Dark, Perforated Leather-appointed seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$35,085
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Ebony Twilight Metallic, Interior Color: After Dark, Premium cloth seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$35,150
  • Discount$1,054
  • Price$34,096
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Volcanic Red Tintcoat, Interior Color: After Dark, Premium cloth seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$37,505
  • Discount$1,125
  • Price$36,380
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Ebony Twilight Metallic, Interior Color: After Dark, CoreTec seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$34,050
  • Discount$1,021
  • Price$33,029
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: After Dark, Premium cloth seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$34,050
  • Discount$1,021
  • Price$33,029
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Riverstone Metallic, Interior Color: After Dark, Premium cloth seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$34,050
  • Discount$1,021
  • Price$33,029
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Ebony Twilight Metallic, Interior Color: After Dark, Premium cloth seat trim
View Details
2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$34,655
  • Discount$1,040
  • Price$33,615
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Rapids Metallic, Interior Color: After Dark, Premium cloth seat trim
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2026 GMC Terrain SUV

2026 GMC Terrain Elevation

  • MSRP$33,555
  • Discount$1,007
  • Price$32,548
  • Conditional Offers$1,750
Engine: 1.5L Turbo 4-cylinder engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: After Dark, Premium cloth seat trim
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View All New GMC Terrain

Sorry, no GMC Terrains are currently in stock.

We may have vehicles that have not yet posted to the website, so we request you call us at (636) 200-3388 for further assistance!

GMC (1)

Terrain SUV (4)

2026

Manufacturer Offer

SCR GMC Lease - Unrestricted

  • Applies to this new 2026 GMC Terrain.

Ultra Low-Mileage Lease for Well-Qualified Lessees. $279/month for 36 months. For Eligible Current Lessees: $4,389 due at signing (after all offers).** $0 security deposit. Tax, title, license, and dealer fees extra. Mileage charge of $0.25/mile over 30,000 miles at participating dealers.

Disclaimer(s)
  • **For Current Lessees of a 2020 model year or newer GM or Non-GM passenger car or truck at least 30 days prior to the lease of a new GM vehicle through GM Financial. Customer remains responsible for current lease payments. Each dealer sets own price. $279/month for 36 months. Your payments may vary. Payments are for a 2026 GMC Terrain FWD Elevation with an MSRP of $31,295. Based on due at signing amount of $4,389 (after all offers). 36 monthly payments total $10,044. Must show proof of lease. Option to purchase at lease end for an amount to be determined at lease signing. Lessor must approve lease. Lessee pays for maintenance, repair, excess wear and disposition fee of $495 or less at end of lease. No security deposit required. Payments may be higher in some states. Not available with other offers. Take new retail delivery by 11-03-2025. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

Down Payment Assistance

  1. $750 Cash
  • Applies to this new 2026 GMC Terrain

Disclaimer(s)
  • Not available with special financing, lease and some other offers. Must take new retail delivery by 11/03/2025. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

GM First Responder Offer

  1. $500 Offer
  • Applies to this new 2026 GMC Terrain

Disclaimer(s)
  • Must be a current Firefighter, Police, EMT/Paramedic, or 911 Dispatcher. First Responders employed by federal, state or municipal governments may be subject to restrictions that limit their ability to accept this offer. Accordingly, this offer is void unless permitted by applicable federal, state and municipal laws, regulations, rules, ordinances, policies, codes of conduct, and other directives or standards regarding ethics and gift acceptance by the applicable federal, state or municipal employees. By accepting this offer, you verify that doing so complies with all laws, regulations, policies or other restrictions regarding ethics or gift acceptance that apply to you. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmfirstresponderappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/02/2026. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

GM Military Offer

  1. $500 Offer
  • Applies to this new 2026 GMC Terrain

Disclaimer(s)
  • Eligible military personnel includes Active Duty members, Reservists, National Guard members, Veterans and Retirees of the U.S. Army, Navy, Air Force, Marine Corps and Coast Guard. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmmilitaryappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/02/2026. (See Trims)
  • See State Disclaimer *

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Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

1Dealer Discount applied to everyone