New GMC Terrain For Sale in O'Fallon, MO

New GMC Terrain SUVs For Sale in O'Fallon, MO

O'Fallon Buick GMC is proud to offer a wide selection of new GMC Terrain SUVs for sale in the St Louis and Wentzville area communities. The GMC Terrain is known for it's brand name, versatility, space, and affordability in the mid-sized SUV market. With many trims, including the Denali, and colors to choose from, it's no wonder the GMC Terrain continues to fly off the lot at our O'Fallon area dealership. Learn more below!

Introducing a Bold New Presence

At O'Fallon Buick GMC near St. Louis and Troy, we're excited to welcome the third-generation 2025 GMC Terrain, showcasing a completely redesigned exterior that embodies GMC's signature truck-inspired aesthetic. With its more upright grille echoing the larger Yukon and Acadia lines, and sharp C‑shaped LED headlamps and taillamps, the Terrain presents a confident, athletic stance that's much more rugged than previous generations. The newly available two-tone roof-offered in Sterling Metallic or Ebony Twilight-adds a personalized, upscale touch that elevates its curb appeal.

Stronger Hemline, Smarter Integration

The updated front fascia brings the headlights closer to the grille, framed by a continuous trim band that links to the lower fog lights creating a refined "facial" design inspired by GMC's full-size truck lineup. Beneath, standard 17‑inch wheels now anchor the Terrain with a platform that feels solid and planted. Higher trims go up to 20‑inch wheels, reinforcing its commanding road presence.

Tech-Forward Interior Refinement

Step inside and the transformation continues with sweeping, wide‑horizontal lines that emphasize cabin spaciousness and sophistication. The centerpiece is a bold 15‑inch diagonal infotainment touchscreen (with Google built‑in), a major upgrade over smaller screens in the outgoing model. The redesigned steering-column gear selector frees up center console space, and the elevated beltline aligns with a taller greenhouse for improved visibility and aesthetic coherence.

Capability That Matches Appearance

Underneath its tougher exterior, the Terrain carries forward a 1.5L turbo engine paired with a new CVT or eight-speed automatic (AWD), delivering slightly better city fuel economy and responsive, confident driving. Technology-wise, it's the first Terrain to offer a rear camera mirror and up to eight camera views-including HD Surround Vision and hands-free AutoSense liftgate, delivering both convenience and enhanced safety. Our dealership is proud to offer this trail-ready compact SUV that combines bold styling, premium tech, and everyday practicality in one refreshed package.

Contact O'Fallon Buick GMC Today!

GMC Terrain SUV offers a diverse range of trim levels to suit various preferences and budgets. Whether you prioritize affordability, technology, or performance, the GMC Terrain has a trim level to match your needs, making it a versatile and appealing choice in the compact SUV segment. Get in touch with our team to discover great Terrain financing deals and options for credit challenged customers!