McCullough NAPA Auto Care has serviced Mercedes-Benz models since 1969.

Schedule Mercedes Check Engine Light Diagnostic in Atlanta, Georgia
A check engine diagnostic will provide our technicians with a fault code to help verify what issue your engine is experiencing. There could be a number of causes for any given fault code. Our ASE-Certified technicians will take the fault code as a starting point and begin the diagnostic process to further determine the cause of your engine problem. Once the cause of your engine issue is found, we can make the necessary repairs to have your check engine light turned off.
McCullough NAPA Auto Care staffs ASE Certified technicians with the experience and technology to properly diagnose any engine problems your Mercedes may have. We’ve been in business since 1969 and have ample experience performing Mercedes check engine light diagnostics for any Mercedes-Benz model, including all their sedan, SUV, Wagon, Coupe models, and more.
Schedule your Mercedes check engine light diagnostic in Atlanta, Georgia, below!
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Quick and excellent service. I was turned away at my regular mechanic because he said he didn’t know how to do a transmission fluid change. This was my first time ever going to McCullough auto care, and I was very happy with my service. They were able to see me immediately and were patient with me considering the circumstances. Eric was great, and even matched the prices of another mechanic down the road. I will be back! Would recommend!
Caitlynn McFee
November 19, 2019 -
The team at McCullough Auto Care are so friendly, thorough, and timely. They know the cars bumper to bumper and how to properly diagnose the problem as well as do scheduled maintenance. They really work with you to do what is necessary to make your car safe and not hit your wallet too hard! I can say that I trust Eric and his team with our cars.
Victoria Mills
October 29, 2019This place is a life saver. Great communication, great service, and very professional people. Eric worked with me through my whole repair. Kept me updated through out the process and fixed the problem on my car at a fair price. I will definitely make this my new place to go for all my car repairs and maintenance needs, along with sending my friends their way.
Angela A
March 10, 2020 -
Graham is great. Kept me informed of my repairs and provided an accurate quote. Pleased with the results. Walked away feeling this place is trustworthy and does quality work. Found them through nextdoor app and now I see why they have such great reviews.
Wess Burgner
July 27, 2020 -
This is the best place you could possibly go to take care of your car! My family and I have been going here for over 15 years and we recommend them to everyone. Eric, Bryan, and Graham are the most trustworthy guys and truly care about their customers. We all love them and are so thankful we found them!!
Rachel Walker
October 12, 2021Had experienced front tire damage hitting metal debris on I-285 just before Rosewll exit. Immediately exited on Roswell and saw NAPA sign and pulled in. Place was busy! But got attention immediately by Jeff service worker. Got tire off my car no waiting. Wow! Determined rim bent but tire still good. He could have sold me a new tire and i would have not known better. So appreciative. Then met with Eric McCullough and quickly arranged to have rim fixed. I decided on new tires for safety and were worn. Eric got me great deal on tires and had my car fixed SAME day. Eric runs a super customer-focused operation. Kudos! Bruce Fike
Bruce Fike
August 1, 2020 -
Eric and his staff were great and helpful. The pricing was fair, and they let us know every step of the way what was wrong and what needed to be changed.
jcwolves .
June 28, 2020I have known Eric and the facility for over 30 years. The service from both a customer and repair stand point is excellent. You can expect to be treated with a high level of professional performance, and courtesy.
Mark Schacher
January 23, 2020Brian and the team were fantastic with handling my issue. In fact they discovered a major error which occurred when I had my last oil change done at a quick oil change place, which turned out to be the cause of my issue. They took pics of it and wrote out an explanation for me to give to the previous oil chance place. Because of their extra effort, I am getting reimbursed for the error. I highly recommend Brian and the team!
Scott Braswell
February 3, 2022 -
My truck broke down when we got to Atlanta on the way to Disney world. A local stopped to help us and recommended this place. This place got me in and got the radiator fixed for a very fair price and on our way the next day very quickly. I was so impressed and it's no surprise they are very busy. Thank you so much and my family all got to the resort and is having a great time!! These people are great and will get your vehicle fixed for a fair price. Plus, you get Napa warranty all over the country at least I did on the repair I got. Please support them!!!
Tim Rowell
September 16, 2019 -
After recently moving to the area, I had a vehicle emergency where my transmission needed replacing. Graham immediately took me in and was SO kind, professional, and direct about the costs; one of their kind staff members even drove me home after my car was dropped for repair so that I did not have to call a car service. They were so patient with me and got my car back to me in one day completely fixed and ready to go! I will never use any other automotive repair shop in the area! ABSOLUTELY recommend without hesitation!
Brinley Bowen
July 28, 2021Extremely helpful, knowledgeable, and professional people. Would definitely go here again if I was in the area and needed them!
Brandon Holdeman
October 2, 2020I was so impressed with these guys!! Family business and the guys are professional, efficient, and personable. They got my part quickly and fit me in so I could come while my kids were at school. They went the extra mile (no pun intended) to consult with another auto body shop to make sure the repair was stable. I will be coming back for all future auto needs and will recommend them widely.
Deb in Atanta
September 10, 2019 -
They diagnosed and repaired my car in time for my trip. Car works great! Eric provides excellent customer service even when he's got a ton on his plate.
Gavi Shapiro
May 10, 2022A staff of gentlemen ready to answer every question with a smile and great knowledge. They not only gave me a good estimate but they completed the work a day early! I highly recommend McCullough NAPA Auto Care to you. You will not be disappointed by the care they put into your vehicle.
Byung Ham
March 13, 2020WOW!! An amazing experience! Traveled here from Kansas to apartment shop for my daughter who is relocating and my husband was unable to join A part was dragging under the car so we popped in to see if they could help. They were so kind and helpful. Restored my faith in this world. Good people do exist!!
Angela Drybread
June 18, 2022 -
Able to fix issue with my 2011 truck other shops could not address- very hard to diagnose mechanical issue another reputable shops couldn’t figure out. Good prices, done on time, and with expert mechanics. Will have them work on all of my vehicles and highly recommended. Support a family owned business for a change!
B. BB
February 23, 2021I know for me one hard thing about choosing a mechanic is brushing off all previous notions I have about mechanics Potentially not treating my car how they would treat their own car. This place has done more than exceed my expectations. I got a phone call for every update, I got a thorough description of what was to be done and what was wrong, not only that, but where the dealership said it would take them two weeks to fix my car, these guys did it in less than 24 hours. I have never been happier to spend $300 in my life. Anything I need in the future, you can be sure I’ll bring it here.
Erik Davis
September 10, 2020 -
Good, honest, and fair shop. If you are in sandy spring, I would not go anywhere else. Family owned and operated - take care of their customers and their crew it seems. 6 stars
Dog Guard - Atl
January 23, 2020Eric at McCullough has been taking care of my family's [multiple] cars for over 10 years now. A Volkswagen, a Nissan, and 2 Acuras: They've done minor repairs all the way to major transmission replacements. Eric is trustworthy, honest, and tells you what really needs to be done versus what can wait. Their prices seem reasonable (although in fairness I haven't been anywhere else recently b/c I'm so pleased with them), they are timely, and always communicate what the car needs in detail. I can't recommend these guys enough!
Juliana Buttram
September 19, 2019
What Can Cause A Check Engine Light To Be On?
Here are a few reasons why the check engine light may be on in your Mercedes-Benz.
- Worn Out Spark Plugs. Spark plugs create the spark that ignites the mixture of fuel and air to create combustion and power your engine. Dull or worn-out spark plugs can misfire, which could cause your check engine light to turn on.
- Loose or Faulty Gas Cap. That’s right. something as simple as a loose gas cap can cause your check engine light to turn on. This can cause you to lose fuel from evaporation and is an easy fix to make.
- Issues with Your Catalytic Convertor. The catalytic converter changes carbon monoxide into carbon dioxide. When your catalytic converter isn’t working properly, you’ll experience a loss in fuel economy and performance. There are many possible causes for a failing catalytic converter, all of which can cause the check engine light in your Mercedes to turn on.
- Failing Mass Airflow Sensor. The mass airflow sensor is responsible for determining how much air should enter your engine. Issues with your engine will occur when your MAF (Mass Air Flow sensor) is not calculating air intake properly. This can cause your check engine light to turn on.
If your check engine light is flashing, that means you have a serious problem. If it’s on but not flashing, there is still an issue, but not as severe. In either case, we urge you to bring your Mercedes into our shop when the light becomes illuminated. Our ACE-Certified Technicians can perform a check engine light diagnostic on your Mercedes to find the root cause of the issue and make repairs as needed.
McCullough NAPA Auto Care Proudly Serves
Serving Zip Codes:
30301, 30302, 30303, 30304, 30305, 30306, 30307, 30308, 30309, 30310, 30311, 30312, 30313, 30314, 30315, 30316, 30317, 30318, 30319, 30321, 30324, 30325, 30326, 30327, 30331, 30332, 30334, 30336, 30342, 30343, 30344, 30348, 30353, 30354, 30355, 30357, 30361, 30363, 30368, 30369, 30370, 30371, 30374, 30375, 30377, 30380, 30384, 30385, 30388, 30392, 30394, 30396, 30398, 31106, 31107, 31119, 31126, 31131, 31193, 31195, 31196
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