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Emissions and Smog Testing in Mesa, AZ

At Quick Shift Auto, we help our Mesa customers' cars run as cleanly and efficiently as they possibly can. We provide a range of emissions testing services to ensure that your car is running and driving its best, as well as complying with all local smog regulations. Should a problem arise with any of your vehicle's emission systems, we provide the parts and expertise to get you back on the road. Quick Shift Auto can replace mufflers/catalytic converters, refill diesel exhaust fluid, and make sure the full range of filters in your vehicle's exhaust system are working perfectly.

Regulators understand that older cars simply can't meet modern emissions standards without extensive modifications. For newer cars however, passing a smog test is a requirement of road legality. Call us at 602-888-4927 to learn more about the emissions requirements for your vehicle.

Emissions testing (also known as smog testing) is a vital part of the maintenance of your vehicle. E-tests provide your mechanic with important information about your car's engine and exhaust system. If important components, like your car's catalytic converter aren't working properly, the car isn't running as it was intended to by the manufacturer. Inefficiency costs you extra money in fuel and does unnecessary harm to the planet. Emissions testing can also affect the value of a vehicle you're trying to sell; while you can still sell a car without a valid e-test certification, you'll get more money for one that has passed the test.

There are several reasons that a car may fail its emissions test. There may be a problem with the vehicle's fuel system adding too much fuel to the air-fuel ratio required for proper combustion within the cylinders of the car's engine. This is known as "running rich" and results in the smell of gasoline from fuel passing through the engine and exhaust system without being fully burnt. Causes of this issue range from faulty fuel injectors to issues with the engine's control computer. There may also be problems with oxygen sensors or the vehicle's ignition system. At Quick Shift Auto, we use a complete set of diagnostic equipment to determine the problem and fix it quickly, explaining every step of the process to you, our valued patron. Call us at 602-888-4927 or send us an email to arrange a health check for your car's emissions system today!

Discover More About Inspection and Emissions Testing Services At Quick Shift Auto in Mesa

Undercar Services
Miscellaneous Auto Services

Contact Us Today!

Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!

What Our Customers Are Saying

Eddie and the rest of the team took incredible care of me and my vehicle. I wouldn’t trust anyone else to service any of my vehicles! Eddie even went above and beyond by helping me find the right headers and exhaust and assisting me with placing the order. If you’re looking for a trustworthy mechanic who can do just about anything, you’ve found the right place. Anyway, here’s my Vette that they’re building! Super happy with everything so far. :)

Mesa, AZ

, 11/05/2026

I seriously can’t say enough good things about Eddie and Quick Shift Auto. I brought my 2004 Chevy Silverado in with a bunch of issues like reduced engine power, a flashing check engine light, a cylinder misfire, oil leaks, hard starting, and just overall not running the way it should. This truck has a lot of miles on it, so I was honestly starting to wonder if it was just getting to the end of its life. Eddie took the time to actually figure out what was going on instead of just throwing parts at it. They did a full tune-up, checked compression, replaced the plugs and wires, fixed the valve cover leaks, professionally cleaned and flow-tested the fuel injectors, and worked through the misfire issue. He kept me updated throughout the process and was straight with me about what the truck needed. I got it back and I’m not exaggerating when I say it feels like my truck is back to life. It starts right up, I’ve had it on the freeway at 75–80 mph, no check engine light, no reduced engine power, no hesitation, nothing. It honestly runs smoother than I can remember. This Silverado may not be the newest or flashiest truck on the road, but I love this thing, and getting it back running this good means a lot to me. I had honestly forgotten how much I appreciated driving it until I got it back. If you’re dealing with misfires, reduced engine power, check engine lights, rough running, or you’ve got an older truck that other shops make you feel like isn’t worth fixing, go talk to Eddie. He knows what he’s doing and made the whole process feel easy. Huge thank you to Eddie and everyone at Quick Shift Auto. You guys seriously brought my truck back to life. I’ll definitely be coming back here for anything I need in the future. 10/10.

Mesa, AZ

, 10/28/2026

Honest diagnosing, good customer service, you can tell they know what there doing

Mesa, AZ

, 10/20/2026

I just serviced my Jetta here and Eddie did a great job on communicating thoroughly and fixing the issue. I’d highly recommend this place because their customer service is awesome, their prices are great, and the turnaround time was exceptionally fast

Mesa, AZ

, 10/16/2026

Savings & Specials

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$40 OFF Transmission Service

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Partners

  • ASE (Automotive Service Excellence)

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