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The 2026 Buick Encore GX is a sporty sub-compact SUV built for an engaging driving experience.

Maximize Your Trade In Value Effortlessly

At O’Fallon Buick GMC, our Vehicle Exchange Program puts the power of your current vehicle’s value to work right away. Simply bring in your car, truck, or SUV, and our Vehicle Exchange Specialist (a sales manager with the authority to act fast) will ensure you get top dollar without the back and forth negotiation. It’s a seamless transition: use your equity toward a brand new Buick or GMC right here in O’Fallon—saving time, effort, and hassle in the process.

Enjoy Smarter Financing and Lower Costs

Trading in through the…

How to Get Top Dollar for Your Trade-In Vehicle

If you're planning to trade in your current vehicle, a little preparation can go a long way in helping you maximize its value. Dealerships look at a variety of factors when assessing trade-in vehicles and presenting your car in the best possible condition can make a noticeable difference in the offer you receive.

Start with a basic clean-up. Washing and vacuuming your car may seem minor, but first impressions count. A clean, well-maintained vehicle signals to appraisers at our dealership that you’ve taken good care of it. 

For those in the market for a capable, premium SUV, the latest GMC lineup is sure to impress. 

When it comes to towing, the 2025 GMC Sierra 1500 is a light-duty truck that offers unrivaled capability. 

Buying a new or used vehicle is an exciting experience, and O'Fallon Buick GMC is here to make the process as smooth and enjoyable as possible. O'Fallon Buick GMC is committed to helping you find the ideal financing solution. With a wide range of options available and a team of knowledgeable experts by your side, you can feel confident in making your next vehicle purchase at our dealership.

The GMC Sierra 1500 gives you some of the best towing and hauling capability you can buy and it has that handsome GMC exterior. 

The 2024 GMC Terrain Denali has an eight-inch GMC Infotainment System with Connected Navigation, providing real-time updates for points of interest, traffic, fuel prices, parking, and more.

If you're seeking a mid-size pickup truck that combines rugged performance with premium features, look no further than the 2025 GMC Canyon at O'Fallon Buick GMC. 

Taking advantage of leasing or financing deals can be a great way to get a new GMC or Buick SUV while managing your budget effectively. We offer specials on both brands on a monthly basis, which gives our customers options to get a great lease deal (sometimes at zero/$0 down) or financing deal that helps mitigate rising interest rates. Our GMC and Buick dealership provides flexible terms, competitive interest rates, and special OEM incentives that make driving a new car more accessible than ever.