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Auto Repair in Larkfield-Wikiup, CA
Auto repair in Larkfield-Wikiup, CA offering brake and rotor service, oil changes, check engine light diagnostics, engine and transmission repair, AC service, batteries and charging systems, tires and wheel alignments, and factory-scheduled maintenance.
Visit our Larkfield-Wikiup auto repair shop today for expert car care solutions tailored to your needs!
Our Auto Repair Services in Larkfield-Wikiup, CA
Brake Repair Larkfield-Wikiup, CA
Need Brake Repair in Larkfield-Wikiup, CA? Stop safely on Old Redwood Highway, River Road, and Mark West Springs grades with precise diagnostics, pad and shoe replacement, rotor and drum resurfacing, brake fluid exchange, caliper and wheel cylinder repair, and ABS testing. Commuters facing 101 stop‑and‑go, parents near Mark West Elementary, and winery staff on dusty backroads benefit from quiet brakes, shorter stopping distances, and even wear. Get a free inspection and same‑day turnaround to handle pulsation, squeals, soft pedals, or warning lights. Our ASE‑certified techs service Toyota, Honda, Ford, Chevy, Dodge, and more. Book: Brake Repair in Larkfield-Wikiup, CA.
Radiator Repair Larkfield-Wikiup, CA
Need Radiator Repair in Larkfield-Wikiup, CA? Stop overheating on Highway 101 or Mark West Springs Road. Local techs diagnose coolant leaks, failed thermostats, weak water pumps, clogged radiators, and cracked hoses using pressure tests and thermal imaging. We flush coolant, replace radiators, caps, belts, and hoses, and verify fan operation so your engine holds proper temperature on summer vineyard drives and Chalk Hill climbs. Get quick turnarounds for commuters to Santa Rosa and reliable help during wildfire evacuation traffic. Book Radiator Repair in Larkfield-Wikiup, CA and keep your car from warping heads, losing heat, or stranding your family today.
Check Engine Light Repair Larkfield-Wikiup, CA
Need Check Engine Light Repair in Larkfield-Wikiup, CA? We diagnose accurately with OEM-level scanners, live data, and smoke testing for EVAP leaks, misfires, O2 sensors, and catalytic converters. Avoid failed California smog checks by fixing readiness monitor issues before your test. We resolve rough idle on Old Redwood Highway, hard starts after Mark West Springs Road heat, and gas-cap or vacuum faults worsened by vineyard dust and wildfire smoke. Get clear estimates, prioritized safety fixes, and road-test verification. Book Check Engine Light Repair in Larkfield-Wikiup, CA and keep local errands smooth with Check Engine Light Repair in Larkfield-Wikiup, CA.
Auto AC Repair Larkfield-Wikiup, CA
Auto AC Repair in Larkfield-Wikiup, CA keeps you cool on 101 traffic and clears fog on Mark West mornings. We recharge R-134a and R-1234yf, fix leaks, replace compressors, condensers, and evaporators, and diagnose weak airflow or warm vents with diagnostics and pressure testing. Replace clogged cabin filters to cut smoke and vineyard dust; repair blend doors and thermostats for steady heat and reliable defrost. Choose local techs who understand summer heat, winter chill, and school drop-offs on Old Redwood Highway. Schedule Auto AC Repair in Larkfield-Wikiup, CA for relief, or book service. Get Auto AC Repair in Larkfield-Wikiup, CA.
Oil Change Larkfield-Wikiup, CA
Need fast Oil Change in Larkfield-Wikiup, CA? Our techs use OEM-spec oil and filters suited to Highway 101 commutes, vineyard dust on Mark West Springs Road, and summer heat that thins oil. We check fluids, belts, battery, tire pressure, and cabin/engine air filters—useful after wildfire smoke or heavy pollen. Stop in near Old Redwood Highway for same-day service that keeps warranties valid and fuel economy steady on trips to Santa Rosa, Windsor, or airport. Choose synthetic or high‑mileage options based on driving. Book an Oil Change in Larkfield-Wikiup, CA today and prevent sludge, noisy startups, and premature engine wear.
Suspension Repair Larkfield-Wikiup, CA
Suspension Repair in Larkfield-Wikiup, CA keeps you stable on Old Redwood Highway, Mark West Springs Road, and speed bumps. We diagnose clunks, pulls, and vibrations, replace shocks and struts, align wheels, and fix ball joints and tie rods to stop uneven tire wear. Local roads see winter potholes, gravel driveways, and curb strikes; we address bent components and restore steering response. Bring Ford, Chevy, Toyota, Honda, Subaru, Lexus, Hyundai, and more. You’ll corner predictably on Sonoma County backroads and track straight on 101. Book Suspension Repair in Larkfield-Wikiup, CA and choose Suspension Repair in Larkfield-Wikiup, CA tuned to conditions.
Tire Shop Larkfield-Wikiup, CA
Need tires fixed fast near Old Redwood Highway and Mark West Springs Road? Our Tire Shop in Larkfield-Wikiup, CA installs tires, performs computer wheel balancing, repairs punctures, replaces valve stems, and services TPMS for Toyota, Honda, Subaru, Ford, Chevy, and more. We stock Michelin, Bridgestone, Goodyear, and Continental to match vineyard backroads, Highway 101 commuting, and winter-rain potholes. Stop vibration, pull, and uneven wear with proper torque and alignment checks. Get emergency flat repair after nails, wildfire debris, or construction zones. Choose a Tire Shop in Larkfield-Wikiup, CA that understands Wikiup streets, school drop-offs, and Santa Rosa schedules well.
Transmission Repair Larkfield-Wikiup, CA
Need Transmission Repair in Larkfield-Wikiup, CA? We diagnose slipping, hard shifts, leaks, and overheating caused by Highway 101 stop‑and‑go, Old Redwood Highway lights, and steep Mark West Springs grades. Technicians service automatics and manuals on Ford, Toyota, Honda, Chevy, Subaru, Lexus, and more. We perform fluid exchanges, filter replacement, clutch and flywheel work, CV axle repair, transfer case and differential service, and full rebuilds when needed. Expect precise scan‑tool data, road tests on local routes, and clear repair options. Get free transmission checks before a Sonoma commute strands you. Choose local Transmission Repair in Larkfield-Wikiup, CA for faster turnaround.
Trusted Auto Repair in Larkfield-Wikiup, CA
On Site Auto Repair provides mobile auto repair in Larkfield-Wikiup, CA, serving driveways, workplaces, and roadside spots. Services include diagnostics with OBD-II scanning, battery testing and replacement, starter and alternator replacement, brake pad and rotor service, oil and filter changes, fluid checks, belt and hose replacement, cooling system repairs, radiator and water pump service, spark plugs and ignition coils, sensor replacement, and check-engine light troubleshooting. We handle light suspension work, CV axles, and wheel bearings, and perform pre-purchase inspections and scheduled maintenance.
About Larkfield-Wikiup, CA
Larkfield-Wikiup blends suburban neighborhoods with small commercial corridors along Old Redwood Highway, shaped by postwar development and recent wildfire recovery. Residents value walkable schools and parks, while businesses serve a stable local customer base. Notable landmarks include Larkfield Shopping Center, Maddux Ranch Regional Park, Sonoma County Fire District Station 6, Cardinal Newman High School campus, and the Wikiup Tennis & Swim Club. Technicians handle common Sonoma County driving wear—suspension issues from Mark West Springs roads, battery and starter problems after winter storms, and brake service suited to stop‑and‑go near Larkfield Center. Mobile diagnostics come to neighborhoods off Old Redwood Highway, while fleet oil changes and tire rotations are scheduled around businesses near Wikiup Tennis & Swim Club and Piner Road commutes.
Larkfield-Wikiup's population is 9,313. City center coordinates: 38.5027, -122.7593. The area sees warm, dry summers, cool wet winters, and periodic wildfire smoke and ash, with road dust and heat affecting vehicles. On Site Auto Repair prioritizes cooling-system checks, battery and belt inspections, cabin/engine air filter replacements for smoke and dust, and fluid maintenance, all performed to meet California emissions and hazardous-waste handling rules. - Wikiup: Mobile diagnostics and brake repairs at homes off Wikiup Drive. We prioritize eco-friendly practices, using recycled materials and sustainable methods whenever possible, and we support Larkfield-Wikiup’s community through local partnerships and donations in Larkfield-Wikiup, CA. For reliable Auto Repair services in Larkfield-Wikiup, contact On Site Auto Repair today.
Cities We Serve
Neighborhoods We Serve
Things to Do
Safari West
Charles M. Schulz Museum and Research Center
Howarth Park
Sonoma Botanical Garden
Trione-Annadel State Park
Pacific Coast Air Museum
Jack London State Historic Park
Salt Point State Park
Crane Creek Regional Park
Marijke’s Grove | Paradise Ridge Winery
California Indian Museum & Cultural Center
North Sonoma Mountain Regional Park
Shiloh Ranch Regional Park
Fort Ross State Historic Park
Kendall-Jackson Wine Estate & Gardens
Coffey Park
Luther Burbank Home & Gardens
Old World Winery
Bouverie Preserve
Larkfield-Wikiup
Transportation
Larkfield Shopping Center
Larkfield Shopping Center
Old Redwood Hwy & Larkfield Maples Ct
River Rd & Fulton Rd
Santa Rosa Bus Terminal
Old Redwood Hwy & Plymouth Way
Old Redwood Hwy & Faught Rd
Groome Transportation
Mark West Springs Rd & Old Redwood Hwy
Fulton Rd & Airport Blvd
Old Redwood Hwy & Faught Rd
Old Redwood Hwy & Airport Blvd
River Rd & Laughlin Rd
Shiloh Center & Wal-Mart (McFarlane)
Larkfield Shopping Center
SMART Train
Shiloh Rd & Old Redwood Hwy
Fulton Rd & River Rd
Fulton Rd & River Rd
River Rd & Fulton Rd
Driving Directions
Driving Directions from Larkfield Auto Center to On Site Auto Repair
Driving Directions from G & C Auto Body to On Site Auto Repair
Driving Directions from Coogler's Auto Repair to On Site Auto Repair
Driving Directions from Local Heroes Auto Care to On Site Auto Repair
Driving Directions from Bonanno Automotive to On Site Auto Repair
Driving Directions from Wayne & Sons Automotive Repair, LLC to On Site Auto Repair
Driving Directions from Rincon Valley Auto Repair to On Site Auto Repair
Driving Directions from ABC Auto Repair to On Site Auto Repair
Driving Directions from All Around Auto Repair to On Site Auto Repair
Driving Directions from Al's Village Repair Shop to On Site Auto Repair
Driving Directions from North Bay Bavarian to On Site Auto Repair
Driving Directions from Ultimate Auto Care to On Site Auto Repair
Driving Directions from ONE STOP AUTO REPAIR to On Site Auto Repair
Driving Directions from Hahn Automotive to On Site Auto Repair
Driving Directions from Pagnano's Automotive to On Site Auto Repair
Driving Directions from Strikly Smog & FSR Auto Repair to On Site Auto Repair
Driving Directions from A&D Mobile Auto truck and tractor repair to On Site Auto Repair
Driving Directions from Lo Maximo Auto Repair to On Site Auto Repair
Driving Directions from FSR Diesel-Auto Repair & Smog 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
Mercedes Repair
Lexus Repair
Acura Repair
Infiniti Repair
Kia Repair
Hyundai Repair
Subaru Repair
Mazda Repair
Volkswagen Repair
Contact Info
Location
363 W 9th St B & C
Santa Rosa, CA 95401
Phone
707-326-8655
Hours
- Monday-Thursday: 7:30 AM - 4:30 PM
- Friday: 7:30 AM - 12:00 PM
- Saturday: Closed
- Sunday: Closed
New Customer Special:
$25 off your first service over $100. New customers only. One per household. Mention this offer when you call. Valid through December 31, 2026.
Oil Change Special:
Full synthetic oil change for $69.99. Includes up to 5 quarts of oil and a new oil filter. Most cars and light trucks. Valid through December 31, 2026.
Free Brake Inspection
Free brake inspection. We check pads, rotors, fluid, and lines and give you a written report. No purchase required.
Latest News
Why Is My Car’s Fuel Pump Failing in Windsor? What Sonoma County Drivers Need to Know About Fuel Delivery Problems
If your car is sputtering, stalling, or struggling to start in Windsor or anywhere in Sonoma County, a failing fuel pump might be the culprit. Here’s how to recognize the warning signs, what to expect from repair, and why catching it early saves you from getting stranded.
Why Is My Car’s Power Window Not Working in Petaluma? What Sonoma County Drivers Need to Know About Window Regulator and Motor Problems
A power window that won’t move, moves slowly, or makes grinding noises isn’t just an inconvenience — it can also be a safety and security issue. If your window is stuck open near Petaluma or anywhere in Sonoma County, here’s what’s likely going on and what to do about it.
Why Is My Car’s Oxygen Sensor Failing in Rohnert Park? What Sonoma County Drivers Need to Know About O2 Sensor Problems
If your check engine light is on and your gas mileage has taken a nosedive, a failing oxygen sensor could be the reason. Here’s what Rohnert Park and Sonoma County drivers need to know about O2 sensor symptoms, what replacement actually involves, and when to get it handled before it turns into a bigger repair.
Why Is My Car’s CV Axle or CV Joint Clicking in Petaluma? What That Popping Sound Means for Sonoma County Drivers
That clicking or popping sound when you turn your car in Petaluma isn’t something to ignore — it’s usually a worn CV joint, and catching it early can save you from a much bigger repair bill. Here’s what’s actually happening inside your drivetrain, what warning signs to watch for, and when to get it checked.
Why Does My Car Smell Like Something’s Burning in Petaluma? What Those Weird Odors Are Actually Telling You
A burning smell coming from your car is never something to ignore — and in Petaluma and throughout Sonoma County, drivers deal with specific conditions that can make these smells worse. Here’s how to figure out what that odor is actually coming from, and when you need to get it checked right away.
Why Is My Car’s Thermostat Failing in Rohnert Park? What Sonoma County Drivers Need to Know
A failing thermostat might seem like a small problem, but it can quietly lead to overheating, poor fuel economy, and expensive engine damage. If you’re driving in Rohnert Park or anywhere in Sonoma County, here’s how to recognize the warning signs early and what to do about it.
Why Is My Car’s Starter Motor Failing in Petaluma? What Sonoma County Drivers Need to Know About No-Start Problems
If you turn the key and hear a click, a groan, or nothing at all, your starter motor could be the culprit. Here’s how to tell what’s actually going on — and what Petaluma and Sonoma County drivers should do about it.
Why Is My Car’s Engine Misfiring in Petaluma? What Drivers in Sonoma County Need to Know
An engine misfire can feel like a stumble, shudder, or loss of power — and if you’re driving through Petaluma or anywhere in Sonoma County, ignoring it can lead to costly damage. Here’s what actually causes misfires, what the warning signs look like, and when it’s time to bring your car in.
Why Are My Tires Wearing Unevenly in Cotati? What Sonoma County Drivers Need to Know About Tire Wear Patterns
Uneven tire wear is more than a cosmetic issue — it’s usually a sign that something mechanical is off with your vehicle. If you’re driving in Cotati, Rohnert Park, or anywhere in Sonoma County and noticing bald edges, center wear, or cupping on your tires, here’s what’s actually causing it and what to do about it.
Why Is My Car’s Water Pump Failing in Sebastopol? What Sonoma County Drivers Need to Know
A failing water pump is one of the most overlooked causes of engine overheating in Sonoma County. If you’re driving in Sebastopol or anywhere around West County, here’s how to spot the warning signs before a small problem turns into a very expensive repair.
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 are here to help with all of your repair needs. No auto repair job is too big or too small for On Site Auto Repair. We handle all types of auto repair, including regular maintenance, engine repair, brake work, and troubleshooting. 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 speed or 6 speed, meaning they have that many gear ratios. Those gears let the vehicle travel across the full range of speeds and use the engine's power efficiently. Transmissions are complex and are in constant use, so they take a lot of wear and tear. Many owners also forget to check and change the fluid on a regular schedule. That is why transmission problems are so common. At On Site Auto Repair in Santa Rosa, our transmission technicians can diagnose, repair, or replace your transmission. If you are looking for an honest transmission repair shop, 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.
Auto Repair Services We Offer in Santa Rosa, CA
Our shop at 363 W 9th St B & C handles a wide range of repairs and maintenance for drivers across Santa Rosa and Sonoma County.
Engine Diagnostics and Check Engine Light
A check engine light means your car is reporting a fault. We connect an OBD-II scanner, read the fault codes, and explain what they mean in plain language. We diagnose the problem first, then tell you what the repair will cost.
Oil Change Service
We do full-synthetic and conventional oil changes. We use the viscosity grade your manufacturer specifies, such as 5W-30, 5W-20, or 0W-20, and we replace the oil filter every time.
Brake Repair and Replacement
Worn brake pads squeak. Worn rotors grind. A soft brake pedal is a warning. We inspect and replace brake pads, rotors, and calipers using OEM-quality and aftermarket parts, depending on your budget.
Battery, Alternator, and Starter Repair
We test your battery with a load tester, not just a voltage check. We also test the alternator and starter, because a failing alternator will kill a new battery quickly.
AC and Heating Repair
If your AC is not blowing cold, we recharge the refrigerant and check for leaks. If your heat is not working, we diagnose the cause and repair it.
Scheduled Maintenance and Tune-Ups
We handle spark plug replacement, belt inspection and replacement, air and cabin filter replacement, fuel system service, coolant flushes, and transmission fluid service. If you are not sure what your car is due for, we look it up by make, model, and mileage.
Tire Rotation and Inspection
Uneven tire wear affects handling, fuel economy, and tire life. We rotate your tires, measure tread depth, inspect the sidewalls, and check the pressure.
Pre-Purchase Inspection
Thinking about buying a used car? We check the brakes, belts, fluids, undercarriage, and suspension, and we run a diagnostic scan for hidden fault codes. Call for current pricing.
Why Santa Rosa Drivers Choose On Site Auto Repair
Free estimates. You know the cost before we start any work.
Same-day appointments available. Call and we will tell you what we can fit in today.
ASE Certified mechanics. Credentialed professionals with real diagnostic tools.
Convenient location. We are in Railroad Square, minutes from downtown Santa Rosa, with shops and restaurants in walking distance while you wait.
Ready to Book?
Call (707) 326-8655 or send us a message with your vehicle and what is going on with it. We will give you a free estimate before we schedule anything.
On Site Auto Repair — 363 W 9th St B & C, Santa Rosa, CA 95401. Serving Santa Rosa, Petaluma, Rohnert Park, Sebastopol, Windsor, Healdsburg, and 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.