• Monday - Thursday: 8:30am - 6:00pm Friday: 8:30am - 4:30pm Saturday: 9:00am - 1:00pm Closed Sundays and Holidays. By appointment CALL 217-433-8119 ANY TIME

About us

Learn more about your local Sullivan Auto Center

Sullivan Auto Center, “where the fundamentals of business still apply”!


Founded in 1997, Sullivan Auto Center is owned and operated by Doug and Karen Dyer, long time area residents.

A fundamental business philosophy of providing Quality and Affordability, as well as, Simplicity and Transparency, prevails at SAC.

From cars, trucks and SUV’s to vans, motorcycles and other recreation vehicles, SAC keeps business simple and drama-free.



“We do what we say we will do”

The #1 Principle at SAC is that the Dyer’s “do what they say they will do, every time and without question or hassle”. They take great pride in upholding this CORE Value!!!

Auto Sales is just part of the business at SAC. Professional Auto Detailing Services are also provided to both individuals and commercial business partners—call us today to schedule your auto detail.

Along with being local business owners, Doug and Karen are parents too. Cullen works at SAC on a routine basis (after school, weekends and between sports seasons) and is a vital part of the detailing business. Kiley pitches in from time to time too but she’s “still in training”.

  • Locally Owned
  • Robust selection of popular vehicles.

Sullivan Auto Center specializes in the sale of domestic cars, trucks, suv’s and cross-over’s. However, a variety of luxury automobiles ( Mercedes-Benz, Hummer, BMW and more) and a few Harley-Davidson Motorcycles, are commonly stocked, as well.

Visit Us Today!

If you’re in the market for a pre-owned vehicle and quality, price and a transparent, hassle-free buying process is important to you, please call us at 217-728-7723. Better yet, just stop by the shop and see us!



For added protection and “peace of mind”, most vehicles qualify for Sullivan Auto Center’s 90 day 4500 mile warranty. Warranty is part of the purchase price and not an additional cost to our customers.

Receive the best value for your trade-in vehicle.  Schedule your appointment today!

We can make you’re vehicle look like new again with our detailing service.  Stop by the shop and learn more!



Doug Dyer
Owner, Marketing & Auto Detail
Cullen Dyer
Lot Manager & Auto Detail