Suntrup Buick GMC: Car Dealership in St. Peters, Missouri

New Buick and GMC Inventory in Missouri

Our new inventory at Suntrup Buick GMC covers a wide range of vehicles built for everyday life in Missouri — from efficient crossovers to tough, capable trucks. We keep a large selection on the lot so you can see, compare, and test drive the models that matter most to you. Here are some of our most popular new vehicles right now:

• Buick Envista — A stylish, compact SUV with a refined interior and smooth ride, perfect for navigating St. Peters streets and beyond.
• Buick Envision — A midsize SUV that blends luxury features with everyday practicality, offering a comfortable cabin and advanced tech.
• Buick Encore GX — A sporty, versatile crossover with bold design and intuitive technology that's easy to love on any commute.
• GMC Sierra 1500 — One of the hardest-working full-size trucks on the road, built for towing, hauling, and everything Missouri can throw at it.
• GMC Acadia — A family-ready three-row SUV with smart storage, driver assistance features, and a spacious, thoughtfully designed interior.
• GMC Terrain — A compact SUV with fuel-efficient performance and a confident stance, ideal for both city driving and weekend adventures.

Want to explore trims and compare features before you visit? Check out our new model research pages to dig into specs, options, and pricing. When you're ready to take one for a spin, browse our full new inventory online and see exactly what's available today.

Used Car Inventory in St. Peters

Our pre-owned lot offers a carefully curated selection of used cars, trucks, and SUVs at competitive prices. Every vehicle goes through our inspection process, and we carry certified pre-owned options for shoppers who want added peace of mind. If you're working with a tighter budget, browse our vehicles under $15K or filter for CARFAX 1-owner vehicles for extra confidence in your purchase. As always, our transparent pricing means the price you see is the price you pay — no surprises at the desk.

Buick and GMC Specials and Deals in Missouri

We work hard to make sure our customers in St. Peters and across Missouri have access to real savings. Our current specials include manufacturer incentives on select new Buick and GMC models, as well as competitive pricing on pre-owned inventory. New vehicle buyers also benefit from our Lifetime Powertrain Loyalty Program — which includes two years of free maintenance on new vehicles through our 5 Works Packages, covering synthetic blend oil changes, tire rotations, and multi-point inspections, plus lifetime powertrain protection for as long as you own your vehicle. That's real long-term value built right into your purchase. Check your GM Rewards eligibility and see how much you can save before you visit.

Buick and GMC Car Service Center in St. Peters, Missouri

Our service center is staffed by factory-trained technicians who know Buick and GMC vehicles inside and out. From routine oil changes and tire rotations to more involved repairs, we're equipped to handle it all with genuine OEM parts and the latest diagnostic tools. You can also take advantage of our tire finder to shop for the right set before your appointment. Scheduling is easy — book online through our service appointment page or call us at 636-936-9794. We're open Monday through Saturday to keep your schedule flexible.

Buick and GMC Car Financing and Leasing Options in St. Peters

Our finance team makes it easy to get behind the wheel, whether you're buying new, buying used, or exploring lease options. We work with a wide network of lenders to find rates that fit your situation, and you can get a head start by using our payment calculator or checking your buying power before you come in. Ready to move forward? Apply for financing online in just a few minutes. If you have an existing vehicle, find out what it's worth with our easy trade-in valuation tool.