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Signal Hill Auto Repair

"Your Car’s Best Friend, Your Neighborhood’s Trusted Shop"

About Us

At Signal Hill Auto Repair, we’re your trusted destination for complete automotive care in Manassas, VA, and surrounding areas. Since 2023, our certified technicians have specialized in general auto repair and maintenance, including oil changes, fluid services, factory-recommended maintenance, and safety inspections. We also provide advanced engine and transmission services, from tune-ups to full replacements, as well as cooling system and radiator repairs.

Our team excels in electrical and diagnostic services, including battery replacement, check engine light diagnostics, and electronic system analysis. For safety and performance, we offer brake repair and replacement, suspension and steering services, wheel alignments, and tire replacements. Stay comfortable with our AC repair, heating services, and exhaust system maintenance, and keep your vehicle efficient with fuel system and emissions repairs.

Need convenience? Our mobile mechanic service brings expert diagnostics and repairs right to your location. Located at 8494 Signal Hill Rd., Suite D, Manassas, VA 20110, we’re committed to delivering reliable, affordable solutions that keep your car running smoothly.

Visit Signal Hill Auto Repair today for professional service you can trust!

Areas Served

What We Offer

Our Specialties include:

At Signal Hill Auto Repair, we take pride in delivering expert automotive care with a focus on quality, reliability, and customer satisfaction. Our specialties include comprehensive auto repair services, brake repairs and replacements, engine diagnostics, battery and electrical system repairs, and routine maintenance to keep your vehicle running at its best. Whether you're dealing with a check engine light, need a quick oil change, or require more complex engine or transmission work, our experienced technicians are here to help. We’re committed to providing affordable, honest service backed by years of hands-on experience and a dedication to getting the job done right the first time.

Our Services include:

General Auto Repair & Maintenance: We provide comprehensive auto repair and maintenance services to keep your vehicle running smoothly and reliably. From routine oil changes and fluid services to factory-recommended maintenance, vehicle inspections, and emergency repairs, our certified mechanics ensure your car stays in top condition with expert care and attention to detail.
Engine & Transmission Services: Our skilled technicians handle everything from engine tune-ups and repairs to full engine replacements and transmission repairs. We also service cooling systems and radiators, ensuring your engine stays cool and performs efficiently. Whether you're dealing with a minor issue or a major overhaul, we deliver dependable solutions that last.
Electrical & Diagnostic Services: We specialize in diagnosing and repairing complex electrical systems. Our services include auto electrical repair, battery replacement, check engine light diagnostics, electronic system analysis, and light replacements. Using advanced diagnostic tools, we pinpoint issues quickly and accurately to get you back on the road safely.
Brake, Suspension & Steering: Your safety is our priority. We offer complete brake repair and replacement, steering and suspension services, and wheel alignments to ensure your vehicle handles properly and stops safely. Whether you're hearing squeaks or feeling vibrations, we’ll inspect and repair your system with precision.
Tires & Wheels: We provide expert tire repair, tire replacements, and wheel alignment services to keep your ride smooth and safe. Proper tire care improves fuel efficiency, handling, and overall vehicle performance—let us help you stay on track.
Heating, Cooling & Exhaust: Stay comfortable and compliant with our car AC repair and muffler and exhaust services. We ensure your vehicle’s climate control and emissions systems are functioning properly, keeping you cool and your car environmentally friendly.
Fuel & Emissions Systems: Our fuel system repair services help restore power, efficiency, and performance. Whether it’s a clogged injector or a failing fuel pump, we diagnose and fix issues to keep your engine running clean and strong.
Mobile & On-the-Go Services: Can’t make it to the shop? Our mobile mechanic service brings expert repairs and diagnostics right to your location. Perfect for busy schedules or emergency situations, we deliver convenience without compromising quality.
Battery Sales & Installation: We now offer a full selection of high-quality automotive batteries for all makes and models. Whether your vehicle needs a standard replacement battery, a high-performance option, or an AGM battery for start-stop systems, we have reliable solutions in stock. Our technicians also provide professional installation and testing to ensure your vehicle starts strong every time.

Testimonials

On 6/6/2026 Kenny Giron had this to say:
⭐⭐⭐⭐⭐ Milton and his worker are great people! Excellent and honest mechanics. I brought in my 2002 Mustang GT with a check engine light, and they took the time to properly inspect and scan the codes. They found that the O2 sensors were bad and replaced them. The check engine light did come back, but after replacing the O2 sensors, the car was already running much better and no longer felt like it was going to stall at idle. I went back to the shop, and they rescanned the codes and found that the car was still running lean and the O2 sensor code were good now. They performed follow-up diagnostics at no extra charge and even did something called a smoke test, which I had never seen another mechanic do before. They found a tube that was leaking a lot of air and replaced it for free since the part was inexpensive and labor was not much. They also found another very small leak, but Milton told me he did not want to replace that part yet because fixing the major leak might solve the entire issue. I really appreciated his honesty and the fact that he wasn’t trying to sell me parts I didn’t need, unlike some other mechanics. He explained exactly how to drive the car through the proper drive cycle for the ECU to make sure the problem was fixed. I followed his instructions, and the check engine light never came back. I returned to the shop to let him know the engine light didn’t return , and he rescanned the car and told me it was ready for the emission. The car runs much smoother now and the acceleration is great once again! It passed the emissions inspection in under 7 minutes. I will definitely be coming back for future maintenance. It’s hard to find an honest mechanic, and Milton has earned my trust. He’s now my mechanic!!!!!!!!🙏🏼🙏🏼🙏🏼

On 5/26/2026 Eric Fullinwider had this to say:
Great service!

On 4/23/2026 Wes Costello had this to say:
Love this shop and Milton does awesome work! He did a transmission service, oil change, and inspection and was able to get it done fast.

On 4/15/2026 natatheangel had this to say:
Amazing fast and reliable service. Friendly workers. Reasonable prices.

On 3/17/2026 Gabe Francis had this to say:
Milton took great care of me and did an excellent job on some replacements on my vehicle. Fast, efficient, and very reasonably priced. Highly recommend these guys.

Contact Us

Signal Hill Auto Repair
8494 Signal Hill Rd Suite D Manassas, VA 20110
Phone: (571) 379-4208
Email: signalhillautorepair@gmail.com

Where To Find Us

Payment Types Accepted

Personal Checks, Discover, American Express, Debit Cards, MasterCard, Visa

Our Hours

Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
Saturday: 8:00 AM - 2:00 PM

News

Is your vehicle ready for warmer weather and spring road trips? 🚗☀️
At Signal Hill Auto Repair in Manassas, VA, we’re here to keep you safe and running smoothly all season long.
✅ Spring Maintenance Services Include:

Oil Changes & Fluid Checks
Brake Inspections & Repairs
AC Service & Recharge (Stay Cool!)
Tire Replacement & Wheel Alignments
Engine Diagnostics & Electrical Repairs
Factory-Recommended Maintenance

⚙️ Our certified technicians deliver reliable, affordable auto care using the latest diagnostic tools—so you can drive with confidence.
📍 Conveniently located at 8494 Signal Hill Rd., Suite D, Manassas, VA
🚗 Ask about our mobile mechanic services for added convenience!
💬 Limited-Time May Offer: Schedule your spring inspection today and make sure your vehicle is road-trip ready!
👉 Call now or book online to secure your spot.

FAQ

What types of auto repair services do you offer?

We provide a full range of general auto repair and maintenance, including oil changes, fluid services, safety inspections, factory-recommended maintenance, and emergency repairs. Our certified technicians ensure your vehicle stays in top condition.

Can you handle major engine or transmission issues?

Yes! We specialize in engine tune-ups, replacements, transmission repairs, and cooling system services. Whether it’s a minor fix or a major overhaul, we deliver reliable solutions to keep your car running smoothly.

Do you offer mobile mechanic services?

Absolutely. Our mobile and on-the-go services bring expert diagnostics and repairs directly to your location — perfect for busy schedules or roadside emergencies.

How do you diagnose electrical problems in vehicles?

We use advanced diagnostic tools to accurately identify and repair electrical issues, including battery replacements, check engine light diagnostics, and electronic system analysis.

What makes Signal Hill Auto Repair different from other shops?

We combine expert care, modern technology, and personalized service at our convenient Manassas location. Established in 2023, our goal is to provide dependable, high-quality automotive solutions with integrity and attention to detail.