TNT Auto Service is a locally owned and operated transmission repair shop in Troy, Missouri. Established in 2012, the shop has ASE certified technicians who can handle various automotive problems, including check engine light diagnostics, transmission rebuilds, diesel work, and more. They specialize in Cummins and Powerstroke vehicles and offer a 2-year/24,000-mile warranty through NAPA AutoCare Center, along with a free roadside assistance loyalty program. Customers praise TNT Auto Service for their quick, reliable service and fair prices. Many highlight the shop's friendly staff and willingness to go the extra mile, such as providing rides home and delivering vehicles after repairs. The mechanics are thorough, efficient, and honest, often able to make appointments for the next day and completing the work quicker than anticipated. Customers also appreciate the transparency of the service, as the mechanics show them the replaced parts and explain why they were necessary.
Tommy is a amazing mechanic, quick with updates, always super helpful, and always fair prices. Helped me with my tucson that needed a whole new engine. Went smoothly.
August 2025
Amazing owners and staff who go above and beyond do not only just repair also educate on potential dangers and work with you to maintain safety for family and yourself. They are very patient and kind and very commucative as well as timely and reliable
February 2025
Best shop around never had a problem quick service every time 10/10 every time!!
