Welcome to On Site Auto Repair!
Mercury Auto Repair in Santa Rosa, CA
- Legacy Mercury Service: Honest, knowledgeable repairs for classic models (Grand Marquis, Milan, etc.).
- Keep Classics Running: Service designed to keep your reliable Mercury on the road.
- Serving Santa Rosa: Trusted Mercury owners since 2010.
Serving Santa Rosa Since 2011
★★★★★ 4.9/5 (117 Google Reviews)
On Site Auto Repair: Santa Rosa’s Premier Destination for Mercury Vehicle Service and Maintenance
Mercury: A Legacy of Distinctive Style and Trusted Reliability
Mercury vehicles, a staple of automotive excellence in the 1980s and 90s, are renowned for their unique blend of style and reliability. Models like the Cougar, Sable, Villager minivan, and Mountaineer SUV have left an indelible mark on the automotive world. The Mercury Sable, particularly noted for its aerodynamic design and signature “light bar” front end, epitomizes the brand’s innovative spirit. At On Site Auto Repair in Santa Rosa, we appreciate the classic value and enduring reliability of Mercury vehicles. Our skilled team is dedicated to providing the expert care needed to maintain your Mercury’s performance and elegance.
Comprehensive Services for Your Mercury at On Site Auto Repair
We offer a full spectrum of repair and maintenance services tailored for Mercury vehicles, ensuring they continue to operate at their best:
- Brake Services: We provide thorough servicing and necessary repairs to maintain the reliability and safety of your Mercury’s braking system.
- Oil Changes & Lube Service: Utilizing a variety of high-quality oils, we select the optimal grade specifically recommended for your Mercury model, safeguarding your engine’s performance.
- Starting & Charging: Our team specializes in auto electrical repairs, including comprehensive check-ups for your Mercury’s starting and charging systems and battery, ensuring dependable vehicle operation.
- Other Maintenance & Scheduled Services: We offer routine maintenance and complimentary inspections to prevent costly repairs and maximize the longevity of your Mercury.
Our Commitment to Quality and Community Trust
At On Site Auto Repair, we value our role as a trusted local business in Santa Rosa. We focus on fostering strong relationships with our clients, aligning our services with your vehicle’s needs and your expectations. You can rely on us for honest vehicle assessments and transparent communication.
Visit On Site Auto Repair for All Your Mercury Needs
Understanding that auto repairs can be a significant concern, we are committed to providing a service experience that is both satisfying and economical. Choose On Site Auto Repair for high-quality, value-oriented Mercury repairs in Santa Rosa.
Frequently Asked Questions (FAQs) for On Site Auto Repair
What Mercury models do you service?
We expertly service a wide range of Mercury models, including the classic Cougar, Sable, Villager, and Mountaineer.
What types of services do you offer for Mercury vehicles?
Our comprehensive services include everything from routine maintenance like oil changes and brake servicing to more complex electrical system diagnostics and repairs.
Why should I choose On Site Auto Repair for my Mercury?
Our dedication to quality service, combined with our expertise in handling Mercury vehicles and a strong focus on customer satisfaction, makes us the ideal choice for Mercury owners in Santa Rosa.
Auto 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 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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Why Is My Car Taking Forever to Warm Up in Rohnert Park? What a Slow-Warming Engine Actually Means
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Why Is My Subaru Using So Much Oil Between Changes in Sonoma County? What Subaru Owners Need to Know
If your Subaru is burning through oil faster than it should, you’re not alone — and it’s not something to ignore. Excessive oil consumption is one of the most common complaints from Subaru owners in Sonoma County, and understanding what’s behind it can save your engine. Here’s what’s actually going on and what to do about it.
Why Is My Car’s Heater Not Working in Sebastopol? What to Check Before Winter Gets Worse
If your car’s heater is blowing cold air or barely warming up during Sonoma County’s wet winters, it’s more than just a comfort issue — it can affect your defroster, visibility, and engine health. Here’s what’s likely going on and when to bring it in for a proper diagnosis.
How Do You Know If Your Car Needs a Wheel Alignment in Windsor or Santa Rosa?
If your car is pulling to one side, your steering wheel feels off-center, or your tires are wearing unevenly, you probably need a wheel alignment. Here’s how to recognize the signs, why Sonoma County roads are especially hard on alignment, and when to get it checked.
Why Is My Car Hesitating When I Accelerate in Santa Rosa? What’s Causing That Sluggish Response
If your car hesitates, stumbles, or feels sluggish when you press the gas pedal in Santa Rosa or anywhere in Sonoma County, something is off — and it’s usually more than just a minor annoyance. This article explains the most common causes of acceleration hesitation, what warning signs to watch for, and when it’s time to bring your vehicle in before a small problem turns into a costly repair.
Why Is My Car Making a Grinding Noise When I Turn in Petaluma? What’s Going On with Your CV Axles and Wheel Bearings
A grinding or clicking noise when you turn your steering wheel is one of those symptoms you shouldn’t ignore — it usually means your CV axles or wheel bearings are telling you something important. If you’re driving around Petaluma or anywhere in Sonoma County and noticing this sound, here’s what it actually means and when to get it checked.
Why Does My Car Smell Burning When I Drive in Sonoma County? What Different Smells Actually Mean
A burning smell coming from your car is never something to ignore — and different smells point to very different problems. Here’s how to identify what you’re smelling and what to do about it before a minor issue turns into a major repair.
Why Is My Car Leaking Fluid in Petaluma? How to Identify What’s Dripping Under Your Vehicle
A puddle under your car isn’t always serious — but it’s never something to ignore. This guide helps Petaluma and Sonoma County drivers identify common fluid leaks by color, location, and smell, and explains when it’s safe to drive and when you need to pull over immediately.
Why Is My Oil Looking Dark and Gritty in Rohnert Park? What Your Engine Oil Is Actually Telling You
Dark, gritty, or milky engine oil is your car’s way of sending you a warning signal — and ignoring it can turn a simple oil change into a costly engine repair. If you’re a driver in Rohnert Park or anywhere in Sonoma County, here’s what your oil is actually telling you and when to act.
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.


















