O'Fallon Buick GMC

Zack was extremely knowledgeable, helpful ,and courteous. He took us on a tour of the dealership It was clean and everyone we talked to was friendly. I've been buying cars for over 50 years this was by far the best experience.

I have been using O’Fallon GMC to service my 2023 GMC Acadia, 2016 Chevy Silverado and 2006 Chevy SSR, for a couple years now, always friendly professional service, done in a timely manner.

Walter at O'Fallon was great to work with. They care about their customers, even ones who are shopping out of state and online.

Please with car I purchased love the rebates on the car I purchased it smoother than I thought

Devan was great. Honest and knowledgable. The finance department made the purchase go smoothly. Was pleased and not pressured.

Nick was great! He made the process super easy from start to finish and answered all my questions. We purchased a used jeep wrangler and LOVE it! Thank you!

Christy was amazing and made our process so easy from the start and to the end in Finance. All our questions were addressed and explained thoroughly. It was a very good experience, and we love the vehicle. It was truly one of the best buying experiences we have had in purchasing a vehicle. We contacted Christy when we started looking for another Acadia. Always kept us informed to make sure we got what we wanted. All in all, it was a wonderful and easy process.

Pleasant experience. Very friendly and helpful people. Our sales person went above and beyond expectations. Same with financial.

Very friendly staff salesman was very knowledgeable and explained things .. I would definitely recommend this dealership to my friends and family..

We had an excellent experience buying our 2025 used Kia from them . Christy who helped us and sold us the car and she was so friendly. We will defiantly be buying from the again.