Certified Used Cars in O'Fallon, MO | Over 100+ Cars Priced Under $15,000

      Interstate Auto Sales has the largest selection of quality used cars for sale in O’Fallon, Missouri from all major manufacturers including Chevrolet, Ford, and Jeep. we have something for everyone. Find out why the O’Fallon area has an extensive network of loyal customers.

      We have knowledgeable sales reps dedicated to providing a pressure-free buying experience. We will find you a vehicle that fits your needs and budget. We have great tools to help you find the car you love. Simply fill out the car finder form with all the details on one page. We will try to find out if the vehicle arrives at our shop on your behalf or randomly. This puts you first!

      Get Secure Financing for a Used Car

      Our finance department is well-trained and able to suggest the most reliable options within the client’s desired budget. We can secure your used car loan and get you on the road. Low-interest rates remain for eligible buyers. You can also obtain pre-approval online through our secure finance application.

      Get pre-approved in minutes and get one step closer to driving your new vehicle. Don’t worry if your credit score is low. We have good relationships with external lenders and accept low down payments. There are also various options for low-income buyers and discounts for those working in the military or retired.

      Feel free to browse our website and check our current inventory. Contact us for the confirmed appointments, you can meet us during the specified business hours. Call (636) 294-7277 to make an appointment. Vehicles are on display only by appointment. Go directly to 1201 W Terra Ln, O Fallon, MO 63366.