At Occoquan Exxon, Dale City Exxon, Smoketown Exxon, Elden Street Sunoco, Sugarland Shell, and Countryside Service Center, we understand that vehicle problems can be frustrating and inconvenient. That's why we offer top-notch diagnostics service to help identify and resolve any issues your vehicle may be experiencing. So if one of your dashboard warning lights has come on, or your vehicle is lacking in performance, we invite you to our shops for expert diagnostics!

Our Diagnostics Process

Our highly skilled technicians use complete diagnostic equipment and have experience working on nearly all makes and models of vehicles. The process involves connecting your vehicle to our computer system, which then runs a series of tests to find issues. Once we have identified the problem, we will work with you to resolve it and get you back on the road as quickly and efficiently as possible. Our computer diagnostics service can find most problems in various areas of the car, including the engine, transmission, brakes, fuel system, and more.

What Are the Benefits of Diagnostics

  • Quick identification of issues – saving you time and money in the long run.

  • Accurate diagnostics – by pinpointing the root cause of any issues. 

  • Improved fuel efficiency – helping you save money on gas by putting problems to a stop.

  • Extended vehicle lifespan – by preventing costly repairs down the line.

Complete Diagnostics Performed By the Very Best in Northern Virginia

We staff some of the most passionate and talented technicians who can use the information retrieved to make accurate repairs. We also offer a 2-year/24,000-mile warranty on parts and labor, valid at all of our locations. We stop at nothing to ensure that our customers leave our shops feeling confident in their vehicle's safety and performance.

Our family-owned and operated shops offer competitive pricing, making us the most convenient and easy choice for all of your auto repair needs. We’re not just a tiny garage – we go above and beyond for our customers. All our guests are welcomed to use our local shuttle service or rental vehicle at their convenience.

If you are in need of diagnostics or any other auto repair services, visit one of our convenient locations at Occoquan Exxon, Dale City Exxon, Smoketown Exxon in Woodbridge, VA, Elden Street Sunoco, Sugarland Shell in Herndon, VA, and Countryside Service Center in Sterling, VA.