Locally trusted. Built on experience. Driven by integrity
about us
More than just mechanics — we’re the ones who show up.Mobile Diesel & Fleet Repair You Can Count On
Sierra Auto Fleet & Diesel is a locally owned mobile mechanic service proudly serving Sahuarita, Green Valley, and Tucson. With over 20 years of hands-on experience, we specialize in diesel repair, fleet maintenance, and on-site diagnostics.
We bring reliable, honest, and professional service directly to you—whether you're dealing with a breakdown, managing a fleet, or just need routine maintenance. Our goal is to keep your vehicles running safely and efficiently without the hassle of a shop visit.
Built on hard work, integrity, and real experience, we take pride in treating every customer like family. When you call us, you're getting dependable service you can trust.
✅ 20+ Years Experience
🔧 Mobile Service
🛡️ Licensed & Insured
🚚 Fleet Specialists
Colossians 3:23
“Whatever you do, work at it with all your heart, as working for the Lord, not for human masters.”