Working Hours
  • Mon 7:00AM - 6:00PM
    Tue 7:00AM - 6:00PM
  • Wed 7:00AM - 6:00PM
    Thu 7:00AM - 6:00PM
  • Fri 7:00AM - 6:00PM
    Sat Closed
  • Sun Closed


Your engine is one of, if not the most important major component of your car. Without it working in good order, it's impossible for you to go anywhere. If it runs inefficiently, you may face a whole host of problems that can be avoided with relatively simple maintenance. At Superior Auto Service Center we provide all of the expertise and parts needed to keep your engine running happily and at peak efficiency.

Oil Changes
One of the simplest ways to determine the condition of your engine is to examine the oil that drains out during an oil change. The oil circulates through much of your engine, so it's a great way to determine the overall health of your car's power plant. Ideally, we want your oil to be darker than when it went in with uniform viscosity and no solid particles. Solid particles are a major concern because they mean that something inside the engine, be it a seal or anything else, is breaking apart. Engines contain a lot of finely balanced mechanisms with only a few micrometers of space for moving parts to clear each other. Any solid particles moving through your engine can cause a massive amount of damage very quickly. At Superior Auto Service Center we perform expert analysis on your oil to make sure that everything is working perfectly within your engine's internals, and we carry the best oils to replace that fluid in your vehicle.

Engine Coolant
Another simple item that can save your engine untold misery, is the coolant fluid, which keeps everything running at the correct temperature. The many moving parts inside your engine, as well as the explosions taking place within its combustion chambers, generate a significant amount of heat. As with any machine, your engine has temperature tolerances at which it happily operates. Once those tolerances are exceeded, things can start to go wrong. A common side effect of overheating can be radiator failure. The water that cools the engine becomes heated and pressurizes the radiator past a safe level causing the scalding water to spray out. This dangerous problem can be avoided with the engine coolants used by Superior Auto Service Center.

To work efficiently, your car's engine needs the ingredients for combustion to be delivered in the purest form possible. To this end your engine contains a number of filters which keep everything nice and clean. Superior Auto Service Center's engine thorough maintenance keeps checks on your air, oil, and fuel filters, replacing them as needed to keep your car running at its highest efficiency.

Fuel Injector Cleaning
Working alongside your spark plugs are the injectors that shoot a precise amount of fuel into the combustion chamber. Over time these injectors can become clogged with contaminants from fuel. Superior Auto Service Center carries a line of specially developed injector cleaning solutions which open the injector tubing back up and get your car back to making the most power that it can.

Accessory Belts
Engine accessories such as the alternator and air conditioning compressor rely on belts that take power from the engine to run them. Over time, these belts can become frayed and damaged. If your alternator belt snaps, for example, your engine won't be able to generate the electricity it needs to charge the battery and keep itself running. Superior Auto Service Center can keep a close eye on the health of your accessory belts and ensure that all your engine's pulleys are lined up perfectly to allow for the maximum amount of use from your belts.

Although diesel engines don't require tune-ups and tend to last longer than gasoline engines, they do require regular maintenance. Typical maintenance tasks include:

  • Changing the oil & filter
  • Changing the air filter
  • Changing the fuel filter
  • Bleeding the fuel system
  • Draining the water separators
  • Refilling the urea injection system

You can count on the experts at Superior Auto Service Center to help your diesel engine last a long time.

Fuel Injection
Fuel injection is a system for admitting fuel into an engine. Since 1990, fuel injectors have completely replaced carburetors as the primary means of getting gasoline into the engine. A fuel injector atomizes the fuel by forcibly pumping it through a small nozzle (under high pressure). Failure of the fuel injection system means poor performance and ultimately destroys the engine. Make sure your vehicle's fuel injection system is maintained properly. For all your fuel injection maintenance and replacement needs, call 301-682-3533 or visit Superior Auto Service Center today.

An ignition system is a system for igniting (using an electric spark) a mixture of fuel and air in a gasoline engine. A properly working ignition system means a properly starting engine and high performance from your car. For all your ignition system maintenance and replacement needs, call or visit Superior Auto Service Center today.

Ignition Wires & Cables
Ignition cables also known as spark plug wires are an important part of your car's ignition system. They transfer the spark from the ignition coil to spark plugs that ignite the mixture of fuel and air. The mixture starts the engine. Over time, ignition wires and cables get weak and break down. This makes it impossible for the spark to reach the engine cylinders. This results in the engine misfiring. The car will eventually fail to start. If it does start, it will run poorly. Common symptoms of faulty ignition cables and wires are: poor gas mileage, engine misfires, engine light is on, and engine may vibrate. If your car needs new ignition cables and wires, call or visit Superior Auto Service Center in Frederick, MD 21703. Here, you will have the wires and cables changed by a top-rated mechanic.

Spark Plugs
A spark plug delivers electric current to the combustion chamber from the ignition system. Spark plugs that haven't been changed for a long time can cause ignition problems. At Superior Auto Service Center, we have automotive experts who will check and replace your spark plugs. For all your spark plug repair or replacement needs, call 301-682-3533 or visit Superior Auto Service Center today.

Oil, Lube, and Filter
To keep running smoothly, your car highly relies on oil, lube, and oil filters. Oil helps in lubricating, cooling, and cleaning the internal engine components. With time, motor oil becomes contaminated. Your car needs an oil, lube, and filter change every three months (or 3,000 miles). When it is time for a lube, oil, or filter change, take your vehicle to Superior Auto Service Center in Frederick, MD 21703.

Check Engine Light
No one likes to see their car's "Check Engine" light come on. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. At Superior Auto Service Center, we can pull the code and diagnose the problem for you. Give us a call at 301-682-3533 or stop by the shop for our expert assistance.

Whether you're in need of simple oil service, or more significant engine maintenance, call Superior Auto Service Center at 301-682-3533 to learn how we can help you get back on the road quickly!

What Our Customers Are Saying

I've got 3 cars and I take all of them there when work is needed. These guys are thorough and honest! I've been a customer since 2006.

-Tom L

Fantastic and Honest people that go above and beyond to help you... Can't recommend them enough...

-Lenny A.

The best customer service, transparency and honesty I have ever experienced when working with an auto repair shop. They will be upfront, and go the extra mile. My vehicles will never be serviced elsewhere.

-Daniel K.

I have been with Superior for 3 years with my 2001 Jeep. They do all my work and I am 100% satisfied with they work and I like the way I'm treated, not like a customer but a good friend. They show me what is wrong so I don't have to take their word for it. If I need a ride home or be picked up to get my car they are there for me. I think I'll be with them for many more years.

-Tom R.

Absolutely the Best! Superior and the team is like family, trustworthy, a clean shop and a pleasure to work with. As a single lady, choosing a good mechanic can be daunting. I don't even want to take my truck anywhere else. The guys at Superior drove my vehicle with me and listened for problems. They described the problem to me so that I could really understand, and their service was fast! They will help with regular maintenance so I won't have to worry about missing important upkeep. They really are SUPERIOR!

-Diana O.

Very knowledgeable and honest guys. Was able to get an estimate before the work was even done. Very friendly. Pricing is not the cheapest around town but reasonable (There is also the old adage you get what you pay for). Would recommend and will do business with them again!

-Timothy W.

These guys are awesome! I was treated like family from the minute I walked in the door. They listened to my concerns, gave me a detailed description of what was needed, found other maintenance concerns, gave me a detailed estimate and even told me what could be differed until next time. Integrity comes to mind when I think about my experience. You can trust these folks with your ride. Highly recommended!

-Mac C.

These guys rock. Recently I started my car (while parked in the garage) and it was leaking fuel. Then, died on me. After calling these guys, within two hours they arranged to have the car towed and by that afternoon provided me with an update. The next morning they called with an estimate for the repairs. Ironically, this happened the DAY BEFORE I left for vacation. Not only did they provide amazing service from the very beginning, but they took care of the repairs and the car was ready for pickup upon my return. This gave me peace of mind while I was away. They even came to my house to pick me up to get my car when I returned! Reasonable prices for work performed (replaced fuel filter, PCV valve, etc.) and the car's been running smoothly ever since. So happy with Superior and highly recommend them.

-Nicole R.

I just want to say that Superior Auto Services are awesome! They have a great professional team. They always greet you with a smile and work around your schedule. Usually it is the same day service. One time I was there I was having a problem with my Subaru acting like it wanted to shut off but not all the time. They drove the car 13 miles before it would act up. How many auto services would do that.? Probably zero to one. I highly recommend them to anyone!! I will never take my car anywhere else. Also they were highly recommended to me. Thanks for keeping my Subaru running greatly appreciate everything you have done for me!!!!

-Margaret H.

After living in the Frederick area for several years I was happy to find Superior! I was coming off an experience where getting my oil changed at a high volume oil change business didn't tell me I needed an alignment and had to purchase a new set of tires prematurely. Superior has great customer service. I really appreciate the time they spend explaining repairs and repair options. I appreciate and use their shuttle service. I appreciate that they are a full service shop and can take care of any repairs my cars need. The only small nit I have is that their price on parts can be a bit high. I also appreciate that their price for an oil change/tire rotation is reasonable- that's big for me!

-Ben L.

If I can take my car there..... you can to, because I'm picky.

-Travis P.

Outstanding in every way, couldn't be more pleased, they live up to their name. Will be a loyal customer from now on; highly recommended.

-Diane D.

Dealer service can be frustrating. So when that happens try Superior Auto Service just off of English Muffin Way. They're friendly, courteous and thorough. Reasonable pricing too. Got that at your dealer? Just a thought!

-Mike M.

Excellent shop, highly recommend. I went into the shop on MLK day around 10:30am to inquire about having an aftermarket exhaust I had purchased installed. They said as long as everything lines up and no issues, 1 hour labor, they scheduled me for the next day. Next day I dropped it off in the morning and picked it up at the end of the day, same price I was told 1 hour of labor. These guys did a great job and were able to fit in my exhaust without needing to wait a long time for an appointment. They also have a shuttle service that dropped me off at work and picked me up when the car was ready. I know where I will go when I have other automotive needs, go there with confidence.

-Adam D.
  • ASE (Automotive Service Excellence)
  • Jasper
  • AAA Approved Auto Repair
  • Bosch Service
  • Castrol
  • CarFax
  • Repair Pal
  • Car Care Aware
  • Call Us For Service: 301-682-3533