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Emissions and Smog Testing

Working Hours
  • Mon 8:00AM - 5:30PM
    Tue 8:00AM - 5:30PM
  • Wed 8:00AM - 5:30PM
    Thu 8:00AM - 5:30PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed

Emissions and Smog Testing

At Scenic City Auto Repair, we help our Chattanooga 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. Scenic City Auto Repair 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 423-622-4213 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 Scenic City Auto Repair, 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 423-622-4213 or send us an email to arrange a health check for your car's emissions system today!

What People Say About Us


  • -Amy W.

    I pulled in on a Friday at 4:00pm with my car over heating. These guys were so kind, fixed me up and got me on my way. I was far from home and so appreciated their efforts. Highly recommend!!!


  • -Sean K.

    These guys saved me 3000 bucks. Not kidding. Dealership estimate was 4300. Allan and his guys got the work done for way cheaper and in about 24 hrs. They're honest and friendly. Stop paying the dealership. Go see these dudes.


  • -Jesse J.

    These guys really know their way around cars! They will get my business every time! Great people too!


  • -Erin P.

    I have a 2001 prius. Its old but a great car. Scenic City knows what they are doing with it and always make sure that all of it is running correctly. They fix its loud roar for only about $350 as it was a wheel issue. Every dealership i went to said i had a bad cat. Converter which is a 2000 dollar repair. They found out it was fine. Now my car runs like its new. I would highly recommend them especially to hybrid owners!


  • -Elliott E.

    We had a van break down en route to Florida. Alan saved the day! They looked at it right away, were clear about what they could find and what they might find and got us back on the road the same day. Very professional. Very honest.


  • -Amy W.

    I pulled in on a Friday at 4:00pm with my car over heating. These guys were so kind, fixed me up and got me on my way. I was far from home and so appreciated their efforts. Highly recommend!!!

Call us for service: 423-622-4213

ACDelco
ASE (Automotive Service Excellence)
IDENTIFIX
BBB Accredited Business
  • Car Care Aware