
Schedule a Diagnostic Emissions Inspection in Johns Creek, 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:
30005, 30022, 30023, 30024, 30092, 30097, 30098
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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, 2020Eric was amazing from start to finish. I chose this shop for my repair based on previous reviews & I'm glad I did. He made sure to, in my opinion, go above and beyond with his politeness, as well as helping to make the process smooth and to try to save me as many coins as he could, while still getting done what was needed. Very happy with this visit
LaDonna Mechelle
August 29, 2020Eric and Company are a first class operation! They get it right the first time in every time! They will pick me up and drop me off to make it 100 times more convenient. They treat me like family and look after my best interest not just their bottom line! These are the kind of people that I value doing business with
paul yurfest
February 15, 2021 -
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, 2020 -
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, 2019They figured out the issue with my Pathfinder and made the repair quickly. Eric is very thorough and kept me up to date the entire time. This was my first time using them but I will use them again!
Michael Meyer
October 21, 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 -
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, 2019 -
yorxx king
July 19, 2020I have used this company twice and was VERY impressed both times with the honesty, knowledge, and cost-effectiveness of the mechanics that I worked with. They were upfront with me on what I needed to do now vs what could wait, showed me where I could save money, and worked with me to make sure I had my car finished before I needed it that weekend. Again, very very impressed. I wouldn't take my car anywhere else in Atlanta.
Anon Emus
September 10, 2020This 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, 2021 -
I 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, 2020Great price and service! More polite and patient set of people! Along with efficiency! Such a great experience overall
Kiran Bandali
December 19, 2020This shop is the best. They did everything they could so I would have minimal time without my car such as having all parts ready before they scheduled the repair. They are super nice and no surprises on price. They opened up my bumper and found a part was damaged. They could have left it the way it and no one would have known but they were honest and did the right thing. I recommend 100%.
Graham Reifert
July 24, 2019 -
Graham was great and was up front about everything that needed to be done. My son's jeep went down on the Saturday before Memorial Day and they had him ready around 1pm that Thursday. Quick turn around in my eyes. Nice employees, everyone was cordial and friendly.
Tim Lawrence
June 4, 2021Would recommend to anyone that needs vehicle maintenance. They are the most honest and reliable mechanic service that I’ve dealt with. Thanks again!
Caleb Pough
February 16, 2021Always 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, 2020 -
This 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, 2020Able 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 live in Brookhaven and work in Duluth and pass dozens of auto repair shops on the route. I will forever go out of my way to go to McCullough. This is hands down the best repair shop I’ve ever been to. They are honest, kind, and treat each customer with the utmost respect. I’ll never take my cars anywhere else!
Joshua Brown
February 18, 2020 -
Wow! I am so impressed with the service I received. Having moved here from Nashville I was nervous about finding a mechanic! These guys are BUSY but they treat every customer like their priority. I got my car repaired within two days on a weekend! Prices can’t be beat and I was getting phone calls with detailed status updates. Amazing service. Really compassionate. Please doing business! I thought I was going to have to spend thousands fixing the plate that was dragging under my car but I got it fixed for under $200! Thank you!!!
Alexa Even
June 7, 2021Very honest mechanics. Eric kept me in the loop with my cars progress. I got the car back in a reasonable amount of time considering the work that had to be done.
Michael Brown
January 30, 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 -
I 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, 2021Always 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, 2019Came 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
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