Sales: 877-735-2327

Service: 800-409-8395



Welcome to Modern Auto Company in Washington, MO Serving Union Cadillac, Chevrolet, Buick & GMC Customers

In 1919, Modern Auto Company was started by John Feltmann in a barn on Elm Street. The company grew and prospered in downtown Washington, MO, becoming a complete automotive service and parts facility in Washington, carrying new and used Buick, Cadillac, Chevrolet and GMC cars, trucks and SUVs. Today, we serve Washington Chevrolet and Cadillac customers with both minor and major mechanical and body repair.

Serving St Clair, St Louis & Union Cadillac, Chevrolet, Buick & GMC Customers

Jim, Joe, and John Feltmann are the third generation of Feltmann family owners and management of Modern Auto Company. In 2004, Modern Auto Company relocated to a new state-of-the-art facility at 6224 Hwy 100 in Washington, MO. Check out our hours and directions page, and stop by to see our competitive financing options if you're looking for a Washington Chevrolet, Buick, GMC or Cadillac dealership. Remember Modern Auto Company when looking for new or used cars, trucks and SUVs in Union and the St Clair area. Our friendly, knowledgeable staff will love to help you with the purchase of your next Chevrolet, Buick, GMC or Cadillac.

Near St Louis, St Clair & Union New and Used Buick, GMC, Cadillac and Chevrolet Cars and Trucks

Here at Modern Auto Company, we specialize in all General Motors franchises and are proud to serve as your Washington, MO Buick, GMC and Washington, MO Cadillac and Chevrolet car, truck, and SUV new, used, and certified pre-owned dealership.

In Greater Missouri, no Chevrolet, Buick, GMC or Cadillac has a better selection than Modern Auto Company

We also serve the greater eastern Missouri area and west St Louis suburbs, including cities such as Sullivan, Union, and St Clair, MO. We carry the new Chevrolet Volt and Sonic. The new Buick Regal and LaCrosse.The new GMC Acadia and the Sierra 1500. As well as the new Cadillac Escalade and SRX. If you are looking for your next Washington GMC, Buick, Cadillac or Washington Chevrolet dealership, contact Modern Auto Company with any inquiries you may have today!

Chevrolet, Buick, GMC Cadillac Parts & Service near St Louis

Once you've purchased your new or used Buick, Chevrolet, GMC or Cadillac car, truck or SUV, our service doesn't stop there. We have service and parts departments standing by to assist you with every aspect of maintenance for your used or new car, truck or SUV, as well as a body shop for your current vehicle maintenance convenience. If you have any questions or comments, please feel free to contact us here in Washington, Missouri.

In Greater Missouri, Modern Chevrolet, Buick, GMC and Cadillac has been your go to auto dealership, offering a great selection of new and used cars, trucks and SUV's. Since 1919, we are proud to be your Washington and regional St Louis, MO auto dealership.

Service | Parts Order Form | GM Accessories

Chevrolet: Camaro | Colorado | Cruze | Equinox | Impala | Malibu | Silverado 1500 | Sonic | Traverse | Volt
Cadillac: ATS | CTS Sedan | SRX
Buick: Enclave | LaCrosse | Verano
GMC: Acadia | Canyon | Sierra 1500 | Terrain