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About One Stop Automotive

One Stop Automotive was founded back in 2005 by owner and operator, Randall Miller. In 2004, Randall was working in a high stress engineering position, flying overseas on a regular basis for work. At the time, his wife was pregnant and expecting a child in early 2005. Randall really wanted his son to grow up in a family that would spend a lot of time together. Randall wanted to see his son everyday, be able to help with homework, go to sporting events, etc.

This desire led him to make the decision to purchase an existing business here in Tucson that he could manage during the day and still go home every evening to spend time with his family. This decision ended up being a great fit since Randall was very mechanically inclined and was good with numbers and customers.

Outside of the shop, Randall gets to do what he loves most, which is to spend time with his son and playing baseball with him. Randall also enjoyings going hiking in the mountains and cycling. He enjoys the outdoors so much and wants to do everything he can to help the environment. This is why our shop is a certified green garage, meaning we meet specific standards when it comes to green practices and proper recycling at our shop. Randall also has solar installed on his home and takes part in rain water harvesting.

Having a reliable safe vehicle is a need, not a want. Tucson has no mass transit systems, which makes having a reliable vehicle even more important. The main goal of One Stop Automotive is to be your source for all of your vehicle’s needs that you can trust will be honest and take excellent care of your vehicle. We want to be able to fix any of your issues and get you back on the road in a timely manner.

For auto repair that is friendly, honest, and reliable, bring your vehicle into One Stop Automotive or stop by our shop today!

Randall and Family | One Stop Automotive


Randall has owned One Stop Automotive for almost 15 years. He has a Bachelor of Science degree in Mechanical Engineering. He is proficient in all aspects of the automotive industry.

Our trained technicians have the knowledge and experience to service and repair most makes and models. The service we provide is second to no one. We select high-quality parts and back up all of our work with a 3-year/36,000-mile warranty (whichever comes first, the years or miles) on parts and labor. Randall enjoys hiking and mountain bike riding in his free time.

Matthew and Family | One Stop Automotive


Matt has been with One Stop Automotive for over 5 years now. Matt has close to 20 years of total experience in the industry, including 10 years as a Master Automotive Technician. Matt's experience in the industry allows him to provide detailed explanations on all repairs and services, allowing customers to make the most informed decisions possible. In his free time, he enjoys golfing and traveling with his new wife. Matt plans to purchase One Stop Automotive in the Spring of 2023 from Randall and carry on the outstanding level of service we have been providing to Tucson for more than a decade now.