Why Choose Us for Auto Repair in Santa Rosa, CA
Top reasons to trust your vehicle with us
For over 60 years, Transco Auto & Diesel Repair has been the trusted choice for drivers throughout Sonoma County. We are a NAPA AutoCare Center with ASE-certified technicians, and we back our work with warranty-backed services on qualifying repairs. From transmission repair and diesel service to brakes, engine work, and preventive maintenance, we handle it all with honest communication, quality parts, and a commitment to getting your vehicle back on the road right the first time.
24-Hour Key Drop-Off
Customer Pick-Up and Drop-Off
Financing OPTIONS Available
Quality Service
With Warranty
Welcome to Transco Auto & Diesel Repair
Serving Sonoma County for Over 60 Years
TRANSMISSION & AUTO REPAIR EXPERTS
At Transco Auto & Diesel Repair, we have spent over 60 years earning the trust of drivers throughout Santa Rosa and Sonoma County. Our ASE-certified technicians specialize in transmission repair, diesel service, engine repair, brakes, suspension, and more. We are a NAPA AutoCare Center, which means every qualifying repair is backed by warranty-backed services and held to the highest standards in the industry. Whether your vehicle needs routine maintenance or a complex repair, you can count on honest communication and quality workmanship from start to finish.
We believe auto repair should be straightforward and stress-free. That is why we offer 24-hour key drop-off, complimentary customer pick-up and drop-off within 7 miles of the shop, and financing through the NAPA Credit Card and Synchrony Car Care. From the moment you book your appointment to the moment you drive away, our goal is to make the entire experience as smooth as possible for you.
YOUR TRUSTED LOCAL SHOP IN SANTA ROSA, CA
Transco Auto & Diesel Repair has been a family-trusted name in Sonoma County since 1966. Our certified technicians bring deep expertise across a full range of services including transmission repair, diesel repair, engine service, welding and fabrication, A/C repair, and preventive maintenance. We work on both foreign and domestic vehicles and are equipped to handle everything your car or truck needs under one roof.
When you choose Transco, you are choosing a shop that treats you like a neighbor, not a transaction. We take the time to explain your repair options clearly, use quality parts, and stand behind our work. Book your visit today and experience the difference that 60 years of dedication makes.
Services We Offer in Santa Rosa, CA
Everything your vehicle needs — under one roof
Transmission Repair
Your transmission is the link between your engine and your wheels, and keeping it in top condition is essential for reliable performance. Our ATRA-certified technicians diagnose and repair transmission issues on automatic, manual, and semi-automatic vehicles with precision you can trust.
Diesel Repair
Diesel engines require specialized knowledge and equipment to service properly. Our experienced technicians handle everything from fuel injectors, turbo chargers, air breaks, pneumatics, preventive maintenance, and diagnostics, keeping your diesel-powered vehicle running at its best.
Diesel Repair
Diesel engines require specialized knowledge and equipment to service properly. Our experienced technicians handle everything from glow plug replacement and fuel injector service to full diesel diagnostics, keeping your diesel-powered vehicle running at its best.
UP TO 3Y/36K Mile Warranty
Your Vehicle’s in Good Hands
From compact cars to pick-up trucks and fleets in Santa Rosa, CA— we’ve got you covered
At Transco Auto & Diesel Repair, we service a wide range of foreign and domestic vehicles. Whether you drive a daily commuter, a heavy-duty work truck, or anything in between, our ASE-certified technicians have the expertise and equipment to keep it running at its best. We do not service RVs, motorhomes, or camping trailers.
A Vision for Better Auto Care
Our goal is long-term relationships, not one-time transactions
HONEST, TRANSPARENT SERVICE
At Transco Auto & Diesel Repair, we believe every customer deserves a straight answer. We perform thorough diagnostics, explain our findings clearly, and present your repair options without pressure or unnecessary upselling. You will always know exactly what is being done to your vehicle and why before any work begins.
QUALITY YOU CAN COUNT ON
We are a NAPA AutoCare Center and an ASE-certified shop, which means every repair is held to the highest standards in the industry. We use quality parts that meet or exceed manufacturer specifications, and all qualifying repairs are backed by warranty-backed services so you can drive away with complete confidence.
CONVENIENCE BUILT AROUND YOU
We know your time is valuable. That is why we offer 24-hour key drop-off and complimentary customer pick-up and drop-off within 7 miles of the shop. Book your appointment online at any time and let us take care of the rest — because getting your vehicle serviced should never be a hassle.
Rely on the Word of Others
Trusted by your neighbors for honest repairs in Santa Rosa, CA
5-star Review by Michael H
Dave and his team did an excellent job with one of my shops vans. The van was diagnosed the first day, ordered necessary parts and got the van back to me in a timely matter and the cost was very reasonable. Thanks Team Transco!
5-star Review by Tyler Schallert
Dave got my truck in same day for a very reasonably priced diagnostic. He found the issue and was very honest and didn’t try to upsell me on extra work I didn’t need and instead let me know it was a quick and easy repair. I will definitely be using him for any work needed on my cars in the future!
Expert Auto Repair Shop Nearby
Providing Professional Car Repair and Maintenance in Santa Rosa, CA and the Surrounding Areas
Located in the heart of Santa Rosa, CA, Transco Auto & Diesel Repair has been a trusted name in automotive service for over 60 years. Our shop on Santa Rosa Ave is easy to find and convenient to reach for drivers throughout Sonoma County and the surrounding region. Whether you need transmission repair, diesel service, engine work, or routine preventive maintenance, our ASE-certified technicians are ready to help you get back on the road with confidence. We proudly serve generations of families who have counted on us for honest, reliable repairs.
At Transco Auto & Diesel Repair, we make every visit as hassle-free as possible. We offer 24-hour key drop-off so you can bring your vehicle in on your schedule, and our complimentary pick-up and drop-off service within a 7-mile radius of the shop means you never have to worry about a ride. As a NAPA AutoCare Center, ATRA-certified shop, and AAA Approved Auto Repair facility, we hold ourselves to the highest standards in the industry. Drivers from across Sonoma County and beyond trust us to deliver quality workmanship and straightforward service every time.
- Bodega Bay
- Boyes Hot Springs
- Cloverdale
- Cotati
- El Verano
- Forestville
- Fulton
- Graton
- Guerneville
- Healdsburg
- Kenwood
- Larkfield-Wikiup
- Monte Rio
- Occidental
- Petaluma
- Rohnert Park
