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Read Our Excellent Auto Repair Reviews

Our Auto Repair Services

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Steering and Suspension

on site auto repair engine repairs diagnosis services

Brake services

on site auto repair engine repairs diagnosis services

Cooling Systems

on site auto repair engine repairs diagnosis services

Heating and AC

on site auto repair engine repairs diagnosis services


on site auto repair engine repairs diagnosis services


Read Our Auto Repair Customer Reviews

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.

Steve R. / Santa Rosa, CA

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!

Carla N. / Santa Rosa, CA

Definitely found my new auto place! Will only bring my car here from now on, they know what they are doing and are top notch customer service. Honest and dependable!

Tiffany K. / Santa Rosa, CA

I’ve been taking our cars here for a few years and have recommended countless people. These guys are honest and reliable. I feel like a have a friend who is a mechanic. I trust them completely.

Angel W. / San Francisco, CA

Brought my Honda 2002 CRV in to get a diagnostic and Chris and Cory were fabulous. So honest and explained my car problems in layman’s terms which was so easy for me to understand. Definitely my new go to place.

Jennifer M. / Yelp

Super nice guys. Got a quote through Yelp which beat the others I received. Was able to get me in quickly and service took the time expected. Gave a suggestion to another vendor for a service that they couldn’t perform. I definitely will be back!

Stephen R. / Santa Rosa, CA

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.

Josh D. / Santa Rosa, CA

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.

John L. / Glen Ellen, CA

Thank goodness for these guys, seriously. My fiancée and I just moved to the area and so happy we came across their Yelp page. The reviews are true!! They were able to get my Prius from the tow yard and to their shop within literally an hour after contacting them and kept us updated all along about the repair. They were extremely helpful with providing us support regarding our insurance questions.

Alexa G. / Yelp


Read More About Our Auto Mechanic Services

Auto Repair In Santa Rosa

On Site Auto Repair in Santa Rosa is a full service auto mechanic shop. Our auto mechanics are certified and here to help you with all of your automotive repair needs. No auto repair job is too big or too small for On Site Auto Repair.
We specialize in all types of auto repair, including: regular maintenance, break/fix, engine repair, troubleshooting and much more! If you are looking for honest and reliable auto mechanics, give us a call today. Ask us about our new customer specials!

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Transmission Repair In Santa Rosa

Vehicles are usually described as 5 or 6 “speed” meaning then have that many gear ratios to allow the vehicle to travel at the full range of speeds required and to make use of the engine’s output power as efficiently as possible. Due to their complexity, constant use and function within a vehicle’s operation, transmissions experience a lot of wear and tear. Add to this the fact that many owner’s forget to check and change the fluid on a regular basis and it’s easy to understand why so many people have transmission problems. At On Site Auto Repair in Santa Rosa, our transmission repair technicians can accurately diagnose, repair or replace your transmission. If your are looking for a reliable and honest transmission repair services company, give us a call today!

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Brake Service In Santa Rosa

There are several warning signs that your vehicle can give you before your brakes may reach the point of potential failure or extensive repair. Whether composed of ceramic, semi-metallic, or organic materials, brake pads erode each time you depress the brake pedal. If the pads wear down too much without being replaced, the metal housing for the pads will make contact with the metal rotors (or drums), which may produce not only a safety issue but a situation where the rotors/drums are required to be replaced as a result of the prolonged contact of metal parts without the pad buffer. If you are in need of an affordable brake repair mechanic in Santa Rosa, please do not hesitate to schedule an appointment today!

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Vehicle Inspection In Santa Rosa

The key to top notch automotive repair and troubleshooting lies in a thorough understanding of what’s actually going on under the hood. Sure, you know that a radiator keeps your engine cool, but understanding how it keeps it cool is the key to solving technical problems efficiently. If you know which parts perform what function, your powers of diagnosis will be much more powerful.

on site auto repair engine repairs diagnosis services

Radiator Inspection Service In Santa Rosa

Ensuring that your vehicle’s engine cooling system is in proper operating condition is extremely essential to engine life and performance. Operating at excessive temperatures can lead to premature engine wear. Your vehicle’s engine cooling system should be checked periodically, and a radiator coolant flush is also recommended to prohibit radiator corrosion. On Site Auto Repair will thoroughly drain and power flush the old coolant and particulates, and refill the cooling system with your vehicle manufacturer’s recommended coolant.