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4worldlovers: Your search for an outstanding automotive service and repair center in Santa Rosa is over!

Tristar Automotive provides auto repair and service to Santa Rosa and beyond! There is a reason we have thousands of satisfied automotive repair and service customers throughout Sonoma County, maintain an A+ BBB Rating, and have an unblemished BAR complaint record – because as owner-operators we take pride in what what we do and value our customers! It’s that simple.


If your vehicle is in need of routine maintenance, a diagnostic issue, a major engine or transmission overhaul, suspension work, etc., Tristar Automotive in Santa Rosa has you covered! We take pride in our team of highly-skilled ASE Certified technicians and our ability to offer you the very best automotive diagnostic & repair service in the industry! Tristar Automotive builds long-lasting relationships with our automotive repair clients.


A JASPER re-manufactured product adds years of life to your vehicle!


Quality and reliability at a fraction of the cost for a new or newer used car!


JASPER re-manufactured gas engines are built to meet or exceed original equipment manufacturer measured tolerances.


3 year/100,000 mile nationwide, transferable parts and labor warranty on most applications.


Tristar Automotive is proud to be a NAPA AutoCare Center with a team of highly-skilled ASE Certified technicians. We are also approved by the Automotive Service Association and everyone’s favorite, the American Automobile Association.


I’ve been coming here for more than 15 years, best mechanics in the Northbay! Jim is the best!!!


Honest and professional service! Been going to them for over 10 years and they have serviced a number of my vehicles from classic cars to my everyday cars. Highly recommend and about to schedule another appointment for my daughter’s car.

I couldn’t be happier with a mechanic. Tristar services all my vehicles from a 2005 Honda Pilot to my 1954 Chevy pickup. I can trust that the work will be done right every time and that they will do only what is needed, no up-selling of unnecessary services…


I discovered Tristar when they opened their doors 23 years ago and have been a very satisfied customer ever since. They are the best shop in Sonoma County!

4worldlovers: Once again, great service. Had my truck towed to their shop with a leaky clutch. It was ready in about 2 hours with two fresh master/slave cylinders. I called another shop before calling On-Site, and they couldn’t get me in for 2 weeks. From now on On-Site will be my first call, always. Fast work and fair pricing.

Great experience! I needed a battery for my SUV, and this site totally came through for me. Very quick response time, they had the part I needed in stock and I was in and out, battery installed, within a half hour. I will definitely be back!

My dad, brother and I have been getting all 4 of our cars serviced at On Site since moving here in 2013. In those 5 years, they’ve always gone above and beyond what you’d expect from most mechanics. Cory is professional and honest with you, from communication to pricing. Chris is one of the most talented mechanics in Sonoma County.

Second time I’ve used them for the routine work. Last was year ago during a previous visit to Santa Rosa. No change in thoroughness of their quality work and their patience with their customers. Oh…I didn’t mention their rates. Totally competitive! So, we have great people, top quality work, and great rates. Regardless of the complexity of the auto work you you need, this is your first stop…period.

4worldlovers:
Your complete auto repair shop in Santa Rosa, CA. Hahn Automotive in Santa Rosa understands that you need reliable automotive maintenance and service to keep you on the road. You want your automobile fixed right, the first time. Often, the best “deal” is not always the best “value.” Call us first to learn about our comparable services and outstanding customer care.

Our full-service Santa Rosa automotive repair shop provides both routine and complex auto services, from oil changes, major maintenance services, and tune-ups to in-depth engine diagnostics and electronics. Your Auto Repair Santa Rosa Shop Of Choice.

At Hahn Automotive we strive to deliver top level auto repair solutions for a lot of various types of vehicles.