Welcome to On Site Auto Repair!
Auto Repair in Rohnert Park, CA | On-Site Auto Repair
Your car breaks down. You don’t have time to wait three days for a shop appointment. You can’t sit in a waiting room for two hours. And you definitely don’t want to pay dealership prices just to find out what’s wrong.
That’s exactly why On-Site Auto Repair exists. We’re a locally owned auto repair service based in Rohnert Park, CA, and we bring the repair shop to you. Whether you’re at home near the Sonoma State University area, parked near the Rohnert Park Expressway, or stuck at work along Commerce Blvd, we come to your vehicle with the tools, parts, and know-how to get you back on the road.
No tow trucks. No waiting rooms. No surprises on your bill.
Why Rohnert Park Drivers Choose On-Site Auto Repair
We come to you. That’s the biggest thing. You don’t lose half a day dropping off your car, arranging a ride, and waiting for a callback. We show up at your home, your workplace, or wherever your vehicle is parked and handle the repair right there.
No shop overhead means better pricing. Traditional repair shops carry the cost of a building, utilities, and front-desk staff. We skip all that. The savings go to you in the form of fair, transparent pricing with no hidden fees.
You always know the cost before we start. We give you a written repair estimate before touching your car. California law (through the Bureau of Automotive Repair) requires this, and we follow it every time. No surprises.
We’re ASE certified. ASE certification means our mechanics have passed nationally recognized tests in specific repair categories. It’s the industry standard, and it matters when someone is working on your car.
We’re California BAR licensed. Every auto repair shop in California is required to hold a valid license from the Bureau of Automotive Repair. Ours is current. You can verify it. We’re not going anywhere.
Parts and labor warranty. We stand behind our work. Every repair comes with a parts and labor warranty so you’re covered if something goes wrong after we leave.
Real reviews from real customers. Our 5-star Google reviews and Yelp reviews come from people in Rohnert Park, Cotati, Santa Rosa, Petaluma, and across Sonoma County. We’ve built our reputation one honest repair at a time.
How It Works
Getting your car repaired through On-Site Auto Repair is straightforward.
Step 1: Call or book online. Tell us what’s going on with your vehicle. We’ll ask a few questions to help us show up prepared.
Step 2: We come to you. Pick a time that works for you. We’ll arrive at your home, your workplace, or wherever your car is parked in the Rohnert Park area.
Step 3: We diagnose and give you a written estimate. Before any work begins, we tell you exactly what we found and what it will cost to fix it.
Step 4: We do the repair. With your approval, we get to work using professional tools and quality parts. Most common repairs are done the same day.
Step 5: We do a test and confirm the fix. We don’t leave until the job is done right. Every repair gets checked before we call it finished.
Auto Repair Services We Offer in Rohnert Park
We handle a wide range of car repair jobs right where your vehicle sits. From a simple oil change to a full engine diagnostic, our ASE certified mechanics work on domestic vehicles, foreign vehicles, sedans, SUVs, trucks, minivans, and hybrids.
Brake Repair
Squealing or grinding when you stop? We inspect your brake pads and rotors, bleed brake fluid, and replace worn components using quality OEM parts or premium aftermarket parts. Brake problems don’t wait, and neither do we.
Oil Change and Preventive Maintenance
Regular oil changes with synthetic motor oil protect your engine and extend your vehicle’s life. We also handle fluid flushes, air filter replacements, spark plug swaps, coolant service, and full tune-ups, so you can skip the shop altogether.
Engine Diagnostics and Check Engine Light
That check engine light isn’t always a crisis, but it’s never something to ignore. We plug in our OBD-II scanner, run a diagnostic scan, and tell you in plain English what’s going on. No upselling. No confusing jargon. Just a written repair estimate and honest advice on what actually needs fixing.
Battery Replacement
Dead battery? We test it with a professional battery tester, confirm whether it needs replacing, and swap it out on the spot. Most battery jobs take under 30 minutes.
Alternator and Starter Replacement
If your car won’t start or your battery keeps dying, the alternator or starter is often the culprit. We diagnose both with a digital multimeter and replace the faulty part same day in most cases.
Cooling System Service
Overheating is one of the fastest ways to destroy an engine. We check your coolant levels, flush the system, inspect hoses and the thermostat, and get your temperature back under control before serious damage happens.
AC Repair
Rohnert Park summers get warm. If your AC is blowing warm air or not working at all, we diagnose and repair the system so you’re comfortable again, whether you’re commuting on Highway 101 or running errands along Redwood Drive.
Suspension Repair
Bumpy rides, pulling to one side, or uneven tire wear all point to suspension problems. We inspect and repair shocks, struts, and related components using a hydraulic floor jack and the right tools for the job.
Transmission Service
Transmission fluid flushes and basic transmission service are part of what we do. We’ll let you know upfront if something is beyond a maintenance item and needs specialist attention.
Pre-Purchase Inspection
Thinking about buying a used car? Don’t sign anything until a mechanic looks at it. We inspect the vehicle wherever it’s located and give you a straight answer about what you’re getting into.
Additional Services
We also handle exhaust repair, power steering service, tire rotation and balancing, starter and alternator replacement, and more. If you’re not sure whether we can help, just call us and ask. We’ll tell you straight.
Serving Rohnert Park and All of Sonoma County
On-Site Auto Repair is based in Rohnert Park, CA, and we serve customers throughout the surrounding area. If you’re in Cotati, Santa Rosa, Petaluma, Sebastopol, or Novato, there’s a good chance we can come to you.
Local areas we regularly serve include:
- Rohnert Park Expressway corridor
- Commerce Blvd and Dowdell Ave business district
- Golf Course Drive neighborhoods
- Sonoma State University area
- Near the Rohnert Park SMART Station
- Cotati, CA
- Santa Rosa, CA
- Petaluma, CA
- Sebastopol, CA
- Novato, CA
Not sure if we reach your location? Call us and we’ll find out. We cover more ground than most people expect.
Ready to Schedule Your Auto Repair in Rohnert Park?
You don’t have to rearrange your whole day around a car repair. On-Site Auto Repair comes to you, does the job right, and charges you a fair price with no hidden fees.
We serve Rohnert Park, Cotati, Santa Rosa, Petaluma, Sebastopol, and the greater Sonoma County area. Our mechanics are ASE certified, California BAR licensed, and backed by genuine customer reviews you can read before you call.
Call us today or book online to set up a time that works for you.
On-Site Auto Repair | Rohnert Park, CA | Serving All of Sonoma County
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 CA drivers.
Do you charge more than a regular shop because you come to me?
Not necessarily. Because we don't carry the overhead costs of a physical shop (rent, utilities, front-desk staff), we're often priced the same or better than traditional shops for common repairs. You also save time you'd otherwise spend dropping off and picking up your car, which has its own value. We give you a written estimate before starting any work, so you always know the cost upfront.
What types of vehicles do you work on?
We work on most passenger vehicles, including domestic and foreign cars, SUVs, trucks, minivans, and hybrids. If you drive something less common, just give us a call and describe the vehicle. We'll tell you straight whether it's something we can handle or whether you'd be better served by a specialist.
Is it safe to have someone repair my car at my home or workplace?
Yes. We're a licensed auto repair business in California, which means we're regulated by the Bureau of Automotive Repair. Our mechanics are ASE certified, carry the proper tools, and follow safe work practices. We're not some guy from Craigslist. We're a legitimate local business with verifiable credentials and real customer reviews you can read before booking.
What if the repair turns out to be more complex than expected?
We'll call you before doing anything beyond what we quoted. California law requires this, and it's just the right thing to do. If we diagnose a deeper issue, we'll explain it clearly, give you a revised estimate, and let you decide how to proceed. You're never stuck with a surprise bill.
Do your repairs come with a warranty?
Yes. Our work comes with a parts and labor warranty. The specific terms depend on the repair, and we'll walk you through what's covered before we start. If something isn't right after we've done the work, contact us and we'll make it right.
Can you handle my car's check engine light?
In most cases, yes. We use an OBD-II scanner to pull the diagnostic codes from your vehicle's computer, identify the root cause, and explain what it means in plain English. Some codes are minor. Some point to something that needs attention soon. We'll tell you the difference and give you options without pushing you toward unnecessary repairs.
I live near Santa Rosa or Petaluma. Can you still come to me?
We regularly serve customers in Santa Rosa, Cotati, Petaluma, Sebastopol, and nearby communities in Sonoma County. If you're within our service area, booking works the same way. Not sure? Give us a call and we'll confirm before you schedule anything.
ReviewsWhat Our Clients Say
