Welcome to On Site Auto Repair!
Santa Rosa’s Most Trusted Auto Repair Shop
Certified mechanics providing honest, reliable auto repair services for all makes and models. Same-day service available.
✓ ASE Certified Mechanics – Expert technicians you can trust
✓ Free Estimates – Transparent pricing with no surprises
✓ Same-Day Service – Get back on the road fast
New Customer Special:
$25 Off First Service Over $100
Oil Change Special:
Full Synthetic Oil Change – $69.9
Free Brake Inspection
Complete brake system check at no charge
25+
Years of Exprienced
Your Local Auto Repair Experts & Reliable Repairs
On Site Auto – Auto Repair Service in Santa Rosa, CA
At On Site Auto Repair, we take pride in delivering expert auto repair services with integrity and precision. Our certified mechanics have years of hands-on experience and are committed to keeping your vehicle running smoothly. Whether it’s brake repairs, transmission work, or routine maintenance, we treat every car like it’s our own. As a locally owned and operated shop in Santa Rosa, we’re here to serve our community with honest diagnostics, transparent pricing, and fast, dependable service. When you choose us, you’re not just a customer—you’re part of the On Site Auto Repair family.
Serving Santa Rosa Since 2011
★★★★★ 4.8/5 (100+ Reviews)
What We DoComplete Auto Repair Services in Santa Rosa
From routine maintenance to complex repairs, we handle it all with precision and care. Trust our certified mechanics to keep your vehicle running smoothly and safely.
Brake Services
- Brake pads, rotors, fluid replacement
- "Starting at $89"
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Transmission Repair
- Automatic & manual transmission service
- "Free diagnostic"
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Engine Repair & Diagnostics
- Automatic & manual transmission service
- "Free diagnostic"
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Heating & AC Service
- Climate control repair, refrigerant service
- "Stay comfortable year-round"
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Steering & Suspension
- Shocks, struts, alignment service
- "Smooth, safe driving"
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Cooling System Service
- Radiator repair, coolant flush
- "Prevent overheating"
Why Choose UsWhy Choose On-Site Auto Repair in Santa Rosa?
Honest & Transparent
No upselling, just honest advice about what your car needs
ASE Certified Technicians
Our mechanics are trained and certified to work on all makes and models
Free Estimates & Diagnostics
Know what you’re paying before we start any work
Local Family Business
Proudly serving the Santa Rosa community with personalized service
ReviewsWhat Our Clients Say
Brands We ServiceAuto Repair Brand
Toyota Repair
Honda Repair
Ford Repair
Chevrolet Repair
Nissan Repair
Hyundai Repair
Subaru Repair
Mazda Repair
Volkswagen Repair
BMW Repair
Mercedes Repair
Lexus Repair
Acura Repair
Infiniti Repair
Kia Repair
Contact Info
Location
363 W 9th St B & C
Santa Rosa, CA 95401
Phone
707-326-8655
Hours
- Monday-Friday: 8:00 AM - 5:30 PM
- Saturday: 8:00 AM - 4:00 PM
- Sunday: Closed
Latest News
The Importance of Regular Maintenance for Your Chevrolet: Insights from Santa Rosa's Auto Experts
As a Chevrolet owner, you know that your vehicle is a significant investment, and you want to ensure it runs smoothly and efficiently for years to come. Neglecting regular maintenance can lead to costly repairs and even safety risks down the road. That's why our...
Comparing Auto Repair Shops in Santa Rosa: Why On-Site Auto Repair Stands Out
Concerning finding the right auto repair shop in Santa Rosa, you have a lot of options. But with so many choices, it can be overwhelming to determine which shop will provide the best service for your vehicle. At On-Site Auto Repair, we're committed to providing...
The Top 5 Reasons Santa Rosa Residents Choose On-Site Auto Repair for Their Vehicles
Are you tired of dealing with shady mechanics who seem more interested in draining your wallet than fixing your car? You're not alone! As a Santa Rosa resident, you deserve better. That's why so many of your neighbors trust On-Site Auto Repair for their vehicle needs....
Why Santa Rosa Drivers Trust On-Site Auto Repair for Their Nissan Vehicles
As a Nissan owner in Santa Rosa, you deserve a reliable auto service that understands your vehicle's unique needs. In terms of keeping your Nissan running smoothly, you want a team that has earned the trust of local drivers. That's why you can count on On-Site Auto...
Top 5 Common Issues with Honda Civics and How to Fix Them
As a proud owner of a Honda Civic, you're not immune to the occasional hiccup. But don't worry, these issues are more common than you think, and with the right guidance, you can get back on the road in no time. In this article, we'll look into the top 5 common...
Chevy Silverado vs. Ford F-150: Which Truck Reigns Supreme?
Buckle up, friend, because you're about to initiate on a wild ride through the world of trucks! In terms of the ultimate showdown between the Chevy Silverado and the Ford F-150, the stakes are high and the competition is fierce. You're not just buying a truck, you're...
The Ultimate Guide to Maintaining Your Dodge Ram for Longevity
As a proud owner of a Dodge Ram, you've made a significant investment in a powerful and reliable truck. To ensure your vehicle continues to perform at its best and lasts for years to come, regular maintenance is important. In this comprehensive guide, we'll walk you...
Decoding Toyota's Hybrid System: How It Works and Why It's Efficient
As you consider making the switch to a more eco-friendly ride, your mind might be flooded with questions about Toyota's hybrid system. How does it work? Is it really as efficient as everyone claims? And what makes it so special? In this post, we'll take a deep...
10 Essential Maintenance Tips for Your Honda Accord
Many Honda Accord owners seek ways to enhance their vehicle's performance and longevity. By prioritizing regular maintenance, you can ensure that your Accord remains reliable and safe for miles to come. In this post, you'll discover ten important maintenance tips...
Understanding the Chevy Silverado's 4WD System: Maintenance and Troubleshooting
As a Chevy Silverado owner, you rely on your truck's 4WD system to tackle tough terrain and harsh weather conditions. But do you know how it works, when to use it, and how to maintain it? Neglecting your 4WD system can lead to costly repairs and even leave you...
Read More About Our Auto Mechanic Services
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
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!
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!
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.
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.
Our Santa Rosa Service Area – Directions to On Site Auto
Proudly serving drivers throughout Santa Rosa neighborhoods, from Railroad Square to Bennett Valley, and extending our trusted auto repair services to Petaluma, Sebastopol, Windsor, and all of Sonoma County.
We Service Clients From All Over Sonoma County
From Wine Country commuters to local families, we provide reliable auto repair services to Santa Rosa, Petaluma, Sebastopol, Rohnert Park, Windsor, Healdsburg, and communities throughout Sonoma County.
Things To Do In Santa Rosa, CA
From exploring the Charles M. Schulz Museum and Luther Burbank Home & Gardens to enjoying outdoor adventures at Spring Lake Regional Park and Annadel State Park, Santa Rosa offers endless opportunities for family fun, Wine Country experiences, and recreational activities that keep our community vibrant year-round.
Santa Rosa Transportation to On-Site Auto Repair
Conveniently located in the historic Railroad Square district with easy access from Highway 101, our auto repair shop is just minutes from downtown Santa Rosa, Santa Rosa Plaza, and all major neighborhoods, with nearby public transit options and walkable access to local shops and restaurants while your vehicle is being serviced.
Contact On-Site Auto Repair Today
Ready to experience honest, reliable auto repair in Santa Rosa?
Whether you're dealing with a check engine light, need routine maintenance, or facing an unexpected breakdown, our ASE-certified mechanics are here to help. We serve drivers throughout Santa Rosa and Sonoma County with the same commitment to quality and honesty that has made us the area's most trusted auto repair shop.