Welcome to On Site Auto Repair!
Auto Repair in Windsor, CA
Auto repair in Windsor, CA offering brake repair, oil changes, check engine light diagnostics, transmission service, wheel alignments, AC and heater repair, battery replacement, tire services and rotations, suspension and steering repairs, and smog/emissions testing.
Visit our Windsor, CA location today for top-notch auto repair services tailored to your vehicle's needs.
Our Auto Repair Services in Windsor, CA
Brake Repair Windsor, CA
Brake Repair in Windsor, CA keeps you safe on US‑101 stop‑and‑go, Old Redwood Highway traffic, and wet winter runs to Santa Rosa. Get pads and shoes replaced, rotors and drums resurfaced or swapped, fluid flushed, calipers and wheel cylinders repaired, plus precise ABS diagnostics. ASE‑certified techs inspect noise, pulsation, pulling, or soft pedals and explain options. We offer free brake inspections and same‑day service, so you can handle school zones near Windsor High and hills by Foothill Regional Park. Choose Brake Repair in Windsor, CA. Schedule Brake Repair in Windsor, CA when vineyard dust or rain affect stopping power.
Radiator Repair Windsor, CA
Need Radiator Repair in Windsor, CA? Stop overheating on 101 traffic, Old Redwood Highway lights, and summer wine-country climbs. Local techs diagnose coolant leaks, failed thermostats, weak water pumps, clogged cores, and blown hoses; they pressure-test, check fan operation, verify circulation, and restore proper engine temperature. Get quick turnaround before a Chalk Hill grade or River Road detour cooks your engine. We service Toyota, Honda, Ford, Chevy, Subaru, Lexus, Hyundai, and more, with coolant flushes, radiator replacement, hose and belt service, and emergency fixes. Schedule today: Radiator Repair in Windsor, CA that keeps Windsor commuters and drives running cool.
Check Engine Light Repair Windsor, CA
Need Check Engine Light Repair in Windsor, CA? We diagnose why your light came on—loose gas caps after Shiloh Road fill-ups, EVAP leaks, misfires, or catalyst efficiency issues before Sonoma County smog checks. Our technicians use OE-level scanners, smoke testing, and live data to pinpoint faults on Toyota, Honda, Subaru, Ford. Get same-day answers, a digital report, and guidance to reset readiness monitors for Highway 101 commutes without delays. Choose local expertise with vineyard backroad dust and stop-and-go Old Redwood Highway traffic. Book today: Check Engine Light Repair in Windsor, CA that fixes the cause, not just the code.
Auto AC Repair Windsor, CA
Beat Windsor summer heat and winter fog with Auto AC Repair in Windsor, CA tailored to Highway 101 commutes and wine country drives. Technicians recharge R-134a or R-1234yf, fix leaks, compressors, condensers, and evaporators, and repair heater cores, thermostats, and blend doors for fast defrost on Old Redwood Highway. We use computer diagnostics and pressure testing to pinpoint HVAC faults, then service climate controls so you stay comfortable and see clearly. Prepare your car for fire-season smoke with cabin filter checks and recirculation fixes. Schedule now: Auto AC Repair in Windsor, CA you can access nearby for local driving.
Oil Change Windsor, CA
Get fast, precise Oil Change in Windsor, CA tailored to Sonoma driving. Stop‑and‑go on Old Redwood Highway, dusty vineyard roads, and summer heat thin oil and clog filters; we replace oil and filters to protect engines, improve mileage, and maintain warranty requirements. Technicians service Toyota, Subaru, Ford, Honda, and more, using manufacturer specs and proper viscosity for Highway 101 commutes and weekend runs to Healdsburg or Lake Sonoma. Drop in by Windsor Town Green, wait briefly, and leave road‑ready. Book an Oil Change in Windsor, CA Choose Oil Change in Windsor, CA that solves short‑trip sludge and cold‑morning starts.
Suspension Repair Windsor, CA
Need Suspension Repair in Windsor, CA that handles real local roads? Potholes after winter rains on Old Redwood Highway, roundabouts by the Town Green, and highway seams on 101 can cause clunks, pulling, and uneven tire wear. We diagnose noises, replace shocks/struts, control arms, ball joints, tie rods, and sway bar links, fix power steering leaks, and perform precision alignments for Ford, Toyota, Honda, Chevy, Subaru, Lexus, and more. Expect tighter steering on Shiloh Road, smoother school drop-offs, and longer tire life. Start here: Suspension Repair in Windsor, CA. For quick, accurate Suspension Repair in Windsor, CA, contact us.
Tire Shop Windsor, CA
Driving Highway 101, Shiloh Road, or Windsor River Road exposes tires to potholes, nails from construction, and vineyard gravel. Our Tire Shop in Windsor, CA installs and repairs tires with torque-verified mounting, computer wheel balancing for vibration-free cruising, precise puncture repairs, new valve stems, and TPMS diagnostics. We stock Michelin, Bridgestone, Goodyear, and Continental for commuter sedans, SUVs, and work trucks. Get same-day flat fixes before school drop-off or weekend wine-country trips. We service Toyota, Honda, Ford, Chevy, Subaru, and more. Need help now? Book online or stop by. Learn more: Tire Shop in Windsor, CA for local drivers.
Transmission Repair Windsor, CA
Need Transmission Repair in Windsor, CA? We diagnose harsh shifts on 101 commutes, slipping on Chalk Hill grades, and shudder in stop-and-go near the Town Green. Our techs service automatics and manuals, flush and refill fluid, replace filters, rebuild units, fix clutches, CV axles, and transfer cases common on AWD Subarus and SUVs. We road-test on local hills, scan modules, and measure pressures to pinpoint faults, saving you repeat visits. Choose a nearby shop that understands Sonoma County heat, vineyard dust, and cold mornings. Book Transmission Repair in Windsor, CA and keep your car moving smoothly in Windsor traffic.
About Our Auto Repair Shop in Windsor, CA
Windsor residents seeking dependable auto repair rely on On Site Auto Repair, just a quick drive south on Highway 101. Since 2011, our family-owned shop has provided Windsor drivers from Town Green to Lakewood Hills with honest, skilled car repair services.
Our team of experienced auto mechanics holds ASE certifications and brings over 25 years of hands-on expertise to every job. We specialize in brake repair, transmission repair, engine repair, and radiator repair—using quality parts and precise diagnostics for lasting results.
As Windsor's nearby best auto repair shop, we excel at import car repair for popular models including Toyota, Honda, Subaru, Acura, and Lexus. We also provide expert Ford repair, Chevy repair, Dodge repair, and Hyundai repair to keep your vehicle running smoothly.
Whether you need check engine light repair or comprehensive engine diagnostics, On Site Auto Repair delivers transparent pricing and dependable service. Windsor families trust us because we treat every customer like a neighbor.
Your Windsor auto mechanic is one call away: (707) 326-8655
About Windsor, CA
Windsor, CA blends small-town planning with a town green at its core, developed around former rail and agricultural roots. Residents value walkable neighborhoods, weekly markets, and community events. Businesses benefit from steady local traffic and accessible corridors. Notable landmarks include Windsor Town Green, Windsor Civic Center, Foothill Regional Park, Windsor Regional Library, and Holiday Inn Windsor–Wine Country. Technicians handle vineyard road dust, steep Foothill Drive grades, and summer heat that strains cooling systems. Mobile service reaches Old Downtown, Shiloh Road business parks, and homes near Windsor Town Green. We diagnose check-engine lights, brake wear from hill driving, and hybrid battery issues, sourcing parts locally for quicker turnaround and coordinating repairs around school pickups and commute hours on U.S. 101.
Windsor's population is 26,344. City center coordinates: 38.5471, -122.8160. Summers are hot and dry with frequent heat waves and wildfire smoke; winters are cool and rainy with occasional storms. On Site Auto Repair uses mobile diagnostics, battery testing, cooling system service, cabin/engine air filter replacement, and brake inspections suited to local dust and heat, while following California BAR licensing, parts labeling, and emissions-related repair requirements. Windsor Town Green: quick diagnostics near shops; Vintage Greens: mobile brake and battery service; Foothill Regional Park area: roadside troubleshooting; Lakewood Hills: scheduled tune-ups and fluid changes; Brooks Creek: convenient oil changes and check-engine light scans. We use recycled materials and sustainable methods wherever possible, reducing waste while supporting Windsor’s community through local sourcing and partnerships. Our team prioritizes responsible repairs that benefit Windsor, CA. For reliable Auto Repair services in Windsor, contact On Site Auto Repair today.
Cities We Serve
Few Clouds
Temperature
Wind Speed
Humidity
Neighborhoods We Serve
Things to Do
Windsor Town Green
Foothill Regional Park
Shiloh Ranch Regional Park
Pacific Coast Air Museum
La Crema Estate at Saralee's Vineyard
Safari West
Charles M. Schulz Museum and Research Center
Keiser Park
Martinelli Vineyards & Winery
Sonoma-Cutrer Vineyards
Riverfront Regional Park
Gamba Vineyards & Winery
Calluna Vineyards
Kendall-Jackson Wine Estate & Gardens
Notre Vue Estate Winery & Vineyards
Mutt Lynch Winery
Lakewood Meadows Park
Windsor Bowling Center
Race 60 Escape Rooms
Transportation
Windsor Rd & Windsor Depot
Old Redwood Hwy & Windsor River Rd
Windsor River Rd & Starr Rd
Windsor Rd & Reiman Ln
Old Redwood Hwy & Alden Ln
Windsor River Rd (Windsor Depot)
Hembree Ln & Old Redwood Hwy
Los Amigos Rd & Tabatha Way
Copperhill Pkwy & N Laughlin Rd
Windsor River Rd & Old Redwood Hwy
Airport Blvd & SMART Station
Old Redwood Hwy & Windsor Rd
Sonoma Country Airport
Windsor River Rd & Spencer St
Windsor Rd & Howard Dr
Old Redwood Hwy & Windsor Rd
Starr Rd & Gumview Rd
Old Redwood Hwy & Lakewood Dr
Raley's Shopping Center
Hembree Ln & Broad Oak Way
Driving Directions
Driving Directions from Ryan's Automotive - Auto Repair, Oil Change, Brake Repair, Tire & Alignment Service in Windsor CA to On Site Auto Repair
Driving Directions from Windsor Truck & Auto Service to On Site Auto Repair
Driving Directions from Drive Rite Automotive to On Site Auto Repair
Driving Directions from AAA Windsor Auto & Tire Center to On Site Auto Repair
Driving Directions from Windsor Auto Repair to On Site Auto Repair
Driving Directions from G & C Auto Body, Inc. to On Site Auto Repair
Driving Directions from Bernhardt's Custom Rides to On Site Auto Repair
Driving Directions from Wayne & Sons Automotive Repair, LLC to On Site Auto Repair
Driving Directions from Smog Check Windsor to On Site Auto Repair
Driving Directions from Christian Brothers Automotive Windsor to On Site Auto Repair
Driving Directions from Bonanno Automotive to On Site Auto Repair
Driving Directions from Pike's Auto Care Center to On Site Auto Repair
Driving Directions from A A Smog Test Only of Windsor to On Site Auto Repair
Driving Directions from Best Truck Body And Trailer Repair to On Site Auto Repair
Driving Directions from North Bay Bavarian to On Site Auto Repair
Driving Directions from ABC Auto Repair to On Site Auto Repair
Driving Directions from EAS Tire & Auto to On Site Auto Repair
Driving Directions from Les Schwab Tire Center to On Site Auto Repair
Driving Directions from Heritage Truck and Off-Road to On Site Auto Repair
Driving Directions from Wine Country Automotive to On Site Auto Repair
Frequently Asked Questions
Our certified mechanics answer the most common car repair questions to help you stay informed and confident. Explore our FAQs for honest, expert advice trusted by Santa Rosa drivers.
Do you provide loaner cars or shuttle service?
While we don't provide loaners, we're located in downtown Santa Rosa's Railroad Square with easy access to shopping, dining, and public transportation while you wait.
Can you work on my vehicle if it's still under warranty?
Absolutely! We perform warranty-compliant maintenance and repairs. We use OEM or equivalent parts to maintain your vehicle's warranty coverage.
How do I know if I really need the recommended service?
We provide detailed explanations and show you exactly what needs attention. We never pressure you into unnecessary repairs - our reputation depends on honest service.
Do you offer payment plans for major repairs?
We accept cash, check, and all major credit cards. For major repairs, we can discuss payment options that work for your budget.
What if my car breaks down outside of business hours?
Call our main number (707) 326-8655 and leave a message. We'll get back to you first thing in the morning to arrange 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
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
Latest News
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Decoding Toyota's Hybrid System: How It Works and Why It's Efficient
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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.