Why Buy From O'Fallon Buick GMC

Serving Our Friends and Neighbors in O'Fallon

At O'Fallon Buick GMC, we're more than just a car dealership in O'Fallon. We're also members of the greater St Peters, Chesterfield, St Louis and St Charles MO communities, who work and live here just like you, and we want only what's best for our neighbors. We strive to support community initiatives and events, and we're committed to delivering the best customer service around, from new Buick and GMC sales, to used vehicles, to finance and service. We provide the best of the best to all our customers.

Find Your Ideal Ride at O'Fallon Buick GMC

Whatever you're shopping for, our sales team is here to ensure a seamless experience throughout every step of the vehicle-buying process. Know exactly what you want? Great! We'll help you secure the best auto financing for your budget. Not sure where to start? No problem! We can help you narrow down your options, so you can select the best Buick or GMC for your needs.

Take the Short Drive from St Peters, Chesterfield, St Louis or St Charles MO to O'Fallon Buick GMC

With our pressure-free environment, drivers from St Peters, Chesterfield, St Louis, St Charles MO, and beyond are encouraged to take advantage of our services that benefit them best. We know car-ownership can be a large undertaking, so we are here to offer advice and help with all things Buick and GMC. Explore what our O'Fallon dealership has to offer and contact us with any questions that you have. We look forward to hearing from you!

Car Shopping Made Easy

We provide a vast selection of new and used vehicles, exceptional car care and customer service with a smile!

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Exceptional Customer Service

We are committed to providing amazing customer experiences.

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We Keep You Going

Our service center is here to help ensure you enjoy many great years of driving with the vehicle you purchase from us.

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Thoughtful Amenities

Whether you are waiting for your vehicle to get serviced, picking up a part for your vehicle, or stopping by to check out a new vehicle for yourself, we offer a wide range of amenities to enhance your experience here! Come by, look around and check what we can offer you!

New Inventory

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Pre-Owned Inventory

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Service Department

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Parts Department

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  1. O'Fallon Buick GMC

    2150 Technology Drive
    O'Fallon, MO 63368

    • Sales: (636) 200-3388
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Get in Touch

  • Contact our Sales Department at: (636) 200-3388
  • Monday9:00 am - 8:00 pm
  • Tuesday9:00 am - 6:00 pm
  • Wednesday9:00 am - 8:00 pm
  • Thursday9:00 am - 6:00 pm
  • Friday9:00 am - 8:00 pm
  • Saturday9:00 am - 6:00 pm
  • SundayClosed