
Schedule a Diagnostic Emissions Inspection in Marietta, Georgia
Failing an emissions test can be frustrating. An emissions test aims to measure the levels of pollutants in your vehicle’s exhaust. Every engine produces emissions, but releasing too many harms the environment.
Schedule a diagnostic emissions inspection, and our technicians will start by visually inspecting your vehicle. They will simultaneously run a diagnostic report that shows your emissions output. Once complete, we will know exactly what needs to be repaired, if anything. We suggest scheduling your diagnostic emissions inspection four to six weeks before your emissions test.
Schedule your failed emissions test repair below!
Reasons For a Failed Emissions Test
A failed emissions test can come as a complete shock for a driver. The causes of a failed emissions test can range from a loose gas cap to an extensive exhaust system issue. Here’s a comprehensive list of some reasons for a failed emissions test.
- Engine issues and check engine light. If this is on, you will always fail your emissions test.
- Overdue oil change
- Faulty oxygen sensor
- Damaged exhaust system
- Loose or cracked gas cap
How To Avoid Failing Your Upcoming Emissions Test
The State of Georgia suggests vehicle owners get their vehicle’s emissions tested four to six weeks before the registration renewal date. The extra time will allow any repairs to be made before your vehicle’s registration expires. We encourage you to consider our scheduled maintenance plans, where repairs and services will be made to your car as needed. Our technicians will be more aware of issues as they pop up because your vehicle will be inspected on a scheduled basis. Areas like your exhaust system will be inspected more frequently as well! This can help increase your chances of passing your emissions test!
McCullough NAPA Auto Care Proudly Serves
Serving Zip Codes:
30008, 30060, 30061, 30062, 30063, 30064, 30065, 30066, 30067, 30068, 30080, 30090, 30152
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Honest experts . affordable compared to other places . Only place that was willing to work on my subaru head gasket and other axle work from maybe 5 places I went to .
Ketan Gunjal
January 7, 2021I received great service from this location! I called them about replacing a serpentine belt and they got it done for me the very next morning. It was quick, and cheaper than some other places that I had called for the same service. Eric and his team did a great job, and they were very nice! I will definitely return for any other auto repair I may need in the future.
darya kovalska
July 13, 2021 -
My experience was surprisingly excellent. I was greeted immediately before I could actually get out my car. Eric was professional and friendly. Eric Followed up with me has promised. I really like that Eric shares real honest timing/wait expectations.
Andrea Townsend
July 20, 2020Had 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 -
Always great service. Always a fair price for very highly skilled technicians. After 20 years of depending on them, I've come to trust McCullough Auto Care blindly.
Clay White
November 25, 2019Great service! The entire team is so friendly and helpful. They were able to diagnose the issue and stayed with it until the problem was resolved.
marshall fox
August 2, 2021Eric and everyone at the shop is fantastic. I call and they are so kind and accommodating. No wonder they have so much business!!! Despite the amount of customers they have, they treat everyone with respect and attention. Love doing business here. Could recommend more. Fast, excellent service !! -Alexa
Sam Loy
May 16, 2022 -
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, 2022After 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, 2021I 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 -
I really cannot count the number of times these brothers have taken care of me, my family and all our various vehicles. We have been loyal customers for more than 20 years! They have done everything we have needed on cars, trailers, used car evaluations for purchase, tank drops, and all the basics. They are very trustworthy and will give you a honest answer on everything and a reasonable estimate on what it will cost to resolve it. They are super busy, so plan to wait a day or two longer than you might somewhere else, but it is worth it!
Ashley Marratt
May 3, 2022Got me in the same day and kept me up to date. Fixed what was needed and did not push any costly add ons like other places do. Feel like I can trust these guys.
Jason Hall
January 20, 2022We have been depending on McCullough's at least since 1997, when we purchased a home only a few blocks away, walking distance really. Had our emissions test a few days ago and want to acknowledge Jack, who completed the tests quickly. I asked him to determine why the backup camera was not in the proper position. It took a bit of time and ingenuity to get everything right. Thanks Jack, for the excellent service.
Dennis Crow
November 21, 2021 -
This place has fantastic service times and an extremely knowledgeable staff. First time I went was for an emergency tire change and it went even more smoothly than I would have ever thought possible. Definitely recommend for any/all vehicle maintenance.
lee griner
November 18, 2019I do not know if I can type out all that I want to in this review but let me say this. WOW!! Being a single father with a busy schedule I cannot tell you enough how grateful I am for Eric and his team! I have been taking my vehicle to them for over 2 years now and I would not go anywhere else. The honesty, timing and keeping their word every single time is simply priceless! They have saved me so much grief because of my current situation. For all you single fathers out there...these guys got your back! I only have one vehicle and my son and I depend on it being in the best running shape possible. Eric and his team go out of there way EVERY-SINGLE-TIME. During these special times where its harder to get even the simplest things done, that has not slowed down this business. They still give 110% with every customer and are sympathetic to their customers unique situations. People, don't look any further for a shop that you can trust and count on. You will simply waste your time and find no better service in Atlanta. Eric, I want to thank you from the bottom of my heart for everything you and your guys do. Having open and honest communication with you is always a pleasure. Folks lets do our best to keep these guys busy!! They deserve everyone's business! A++++++
Jacob Wiechmann
April 29, 2020My vehicle was on the verge of breaking down while I was in Sandy Springs for work last week (I live in a different town), and my boyfriend had determined that it was a problem with the alternator. He helped me find McCulloch Auto Care, which was right down the street. We'd noticed the good reviews, and we took a chance! The staff is super friendly, professional, and kind. They were able to confirm our suspicions about my car's specific issues, and took us as soon as they could. I was so impressed with their customer service. They really went above and beyond to meet my repair needs, had a fair price, and worked quickly to repair the issue. I almost wish I lived closer just so that I could have my car serviced here more often! Great family owned business.
hannahinhd
February 15, 2021 -
WOW!! 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 -
I’ve taken my cars here over the years and have been delighted w the team. They’re honest, professional, knowledgeable, and will shoot you straight. Prices are fair and they’ll tell you abt issues that may or will arise in the future and to keep that in mind for future reference. Overall an A
Alex Cameron
August 26, 2020Always extremely professional. Willing to work with customers. Sadly, car repair is expensive but they have worked with me. Graham has been extremely helpful with issues my daughter was having with her car while we were at another mechanic in the area. We asked on Nextdoor for recommendations and McCullough came up numerous times!
Robyn Vogel
May 14, 2020Came in for emissions and they exceeded my expectations! Saw headlight out, replaced it. Saw no oil sticker, checked it and put a little in it until i can get back in for change. While waiting you could tell these guys really care about their customers and the safety of their vehicles. Definitely will be coming back here!
Nadia Perrmann
January 5, 2021 -
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, 2019I found my new home for car repair. Eric was very nice and honest. We definitely be coming back! Thank you for the excellent customer service.
Rosani Reynoso
October 21, 2021Eric has been my service manager for years. He is always professional and easy to deal with. He goes out of his way to take care of your needs and makes accommodations to the customer when needed. They will ferry me and my car to and from their shop (I live within blocks) and I appreciate that very much. Everyone at McCullough is nice, friendly and helpful.
Jan Murray
May 2, 2021 -
Could not be happier with the service I received at McCullough NAPA Auto Care! The gentlemen that helped me were very professional and made me feel at ease in a stressful situation. Would definitely recommend!
Rachel Eichenblatt
July 1, 2020Very respectful, honest, and professional. I was having issues with my headlights, and they fixed it for a reasonable price. They do a lot to ensure that you have a positive experience, and that you're not wasting your money on unnecessary parts or repairs. Top notch service, A+!
Andrew Asher
July 30, 2021Overall, McCullough car repair has done an outstanding work on my car. They are professional, honest, reasonable with cost and does the work on time. Most especially, Eric and Wes, they are top notch and I am highly satisfied with the outstanding work on my car. I highly recommend this car repair shop to my family, friends and all over Atlanta. I am extremely happy and highly satisfied with my car repair as well as the car repair cost. Thank you for the outstanding work and the job well done.
Jocelyn Dudley
July 22, 2021
Read More About Diagnostic Emissions Inspections

Does My Car Need An Emissions Test In Georgia?
In the quest for environmental conservation, vehicle emissions testing plays a pivotal role. This practice helps control air pollution, ensures the efficient operation of vehicles, and contributes to preserving Georgia’s air quality. Understanding the dynamics of emissions testing in Georgia is a responsibility that falls upon every vehicle owner. At McCullough NAPA Auto Care, we advise that you test your vehicle 4 to 6 weeks before the registration renewal date, allowing sufficient time for necessary repairs or retests.

What To Do After A Failed Emissions Test
Georgia law requires that all gasoline cars and light-duty trucks (weighing 8,500lbs or less) made between 1999 – 2020 registered in one of the 13 counties