About Us

About Interstate Auto Sales LLC | Trusted Used Car Delaers in O Fallon, MO

Interstate Auto Sales LLC is the #1 source for purchasing a high-quality used car in O’Fallon, Missouri. You don’t have to plan a day to visit our dealer to see what kind of vehicle we have in stock. By visiting our website, you can actually sit down, relax and spend some time. You can easily find all current used cars in our online inventory.

You’ll want to take the appropriate safeguards to ensure your dream car can last for many years and miles once you’ve found it in our used car inventory. Your vehicle will receive the essential care and attention from our team of knowledgeable and certified mechanics to ensure that it is prepared to travel on the open road. Used cars are thoroughly inspected before being added to inventory. The door to our service center is always open to Interstate Auto Sales LLC customers.

We offer used car loans online at our dealership in O Fallon. Our Finance Department, with a friendly team of experts, works directly with local banks and lenders to find your credit and plan payments for your budget. Our goal is for you to drive away your new purchases confidently. If you have bad credit, we have a different finance plan that suits you. If you are working for the military, there is some discount in this case.

If you can’t find your favorite car, use the Car Finder tool online. Simply fill out the form with all the details on the car finder page, and our staff will find your favorite car on your behalf and contact you immediately. Then you can proceed with financing for other processes.

For more information about our used car dealership, contact us at (636) 294-7277 or visit us directly. We are located at 1201W Terra Ln, O Fallon, MO 63366.

Premium Inventory Of User Cars

Explore our extensive inventory of high-quality used cars, where every vehicle tells a story of reliability and performance. Our diverse selection encompasses various makes and models, ensuring there’s a perfect match for every driver’s preferences and budget.

Flexible Financing Options

Our experienced finance team is dedicated to finding a financing solution that works for you. Enjoy competitive interest rates and customizable loan terms that provide the flexibility to align your monthly payments with your financial goals.

Find Your Favorite Used Car

Take the guesswork out of car shopping and let our Car Finder Tool do the heavy lifting. Simply input your preferences, and explore a range of vehicles that match your criteria. Find your perfect car effortlessly and embark on your next driving adventure with confidence