About us

The main goal at Trailside Auto Repair, Inc. is to be a top notch automotive repair shop where customer service is always number one. This starts with building positive relationships with each and every client. Opened in August 2012, owners Mark and Theresa Shoup strive to provide quality, fair, and reliable vehicle repair, maintenance, and services.

Although Trailside Auto Repair is relatively new to the Wasco area, owner, Mark Shoup has many years of experience in the automotive industry. He is an A.S.E. certified Master Mechanic. He graduated from Wyoming Technical Institute in 1979. Fresh out of tech school, he started working in a small independently owned auto repair shop in Lisle, IL where he learned the importance of customer service and satisfaction. He moved on to a Buick Dealership in Wheaton IL that won many awards for top CSI (Customer Service Index) rankings in the automotive industry. While there, he completed countless GM technician training courses, both online and at their headquarters. Mark was honored in the “Best of the West Technician Trouble Shooting Contest” which chose the top 50 technicians in a 4 state radius. He was also involved in the Technology Center of DuPage mentoring program while at the dealership. Over the 23 years that he worked there, he built up a loyal clientele that would often request him to diagnose and repair their vehicles.

In the Wasco/St Charles/Elburn area, Mark has been involved in many community functions. From helping coach baseball and soccer teams and participating as an Assistant Scout Master of his son’s local Boy Scout troop, to providing guidance and information on automotive technicians at career day programs at Thompson Middle School, to helping run the Elburn Days car show, he is always ready to pitch in to help out.


Trailside Auto Repair opened by Mark and Theresa Shoup (part of the community for over 21 years), in August 2012. We are located at 40W288 Wasco Road, on the North side of Rte 64 across the street from Dairy Queen and behind King’s Mill. We offer service, repair, and maintenance on all makes and models of both domestic and import cars and trucks. We pride ourselves on being honest with our customers and are happy to explain why repairs are needed, if they are needed immediately, and are more than happy to show you the parts that were replaced after the job is complete. We try to be very accurate with repair cost estimates and also provide a low-cost check over for people considering a used car purchase. Through our Napa Auto Care program, we offer specials all year round that run for two months each and are posted in our waiting area and on our Facebook page. In the community, we have been a part of the National Night Out program (we were the ones with the dashboard beanbag game this past August), advertise in the Fox Mill Magazine and often attend their network meetings, and help local scouts with providing a space for their yearly trailer shakeout. Come see what makes us different from the rest of the repair shops out there… integrity, reliability, and fair pricing, all with that personal touch!



40W288 Wasco Road • St Charles, IL 60175
West of LaFox Road, off Rte 64 and the Great Western Trail
Copyright © 2019 Trailside Auto Repair, Inc. | (630) 549-0337