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Emissions and Smog Testing

Working Hours
  • Mon 7:30AM - 4:30PM
    Tue 7:30AM - 4:30PM
  • Wed 7:30AM - 4:30PM
    Thu 7:30AM - 4:30PM
  • Fri 7:30AM - 4:30PM
    Sat Closed
  • Sun Closed

Emissions and Smog Testing

At D & D Auto & Fleet, we help our Jacksonville 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. D & D Auto & Fleet 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 904-777-5115 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 D & D Auto & Fleet, 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 904-777-5115 or send us an email to arrange a health check for your car's emissions system today!

What People Say About Us


  • -Jen A.

    D&D has quick and friendly service. They checked my brakes recently, and I found that the previous service did a number on my studs and over tightened my lug nuts. Thanks y'all!


  • -Tina H.

    These folks are what honest repair people look like! They even offer a service to go check out a vehicle BEFORE you buy and get stuck. I highly recommend them for your car repair, Miss Debbie runs a tight ship. Thank you.


  • -Angela T.

    This place was awesome! They put a new water pump in my Scion xB for almost half the price Toyota was asking, and they did it in one day!! Awesome and honest!


  • -Daniel N.

    VERY NICE PEOPLE AND WELL PRICED. TRUST WORTHY AND I WILL BE BACK. GMC 1500 SIERRA.


  • -Alyssa B.

    My fiancé & I have recently discovered D&D automotive a couple months ago and we would absolutely recommend them to anyone! Anytime we have a problem with our truck we take it right up there and they do a great job. We never have any problems with them, Debbie who works in the office is super friendly and helpful! I can't believe we didn't find out about this place sooner because we will not be taking our vehicles anywhere else but there :)


  • -Jing P.

    Mark & Deb show they care for your cars and very reasonable price. They know what is wrong with your car. I've been with them for almost 6 yrs and I had recommended them to lots of friends.


  • -Vincent W.

    I had visited many places today to clear a DTC historical code. The Jeep dealer wanted $133 and keep the vehicle for two days. The staff is very friendly, professional, and caring. They didn't even want me to pay anything for 5 minutes of work to clear a code. I even offered just $20 for his time. I will definitely use this place in the near future. Thank you.


  • -Rhonda F.

    Very friendly and courteous staff. A friend of mine referred me to them. They did a great job fixing my vehicle. They're reasonable and honest. I went there thinking I had needed a major part to be replaced and after they put it on the diagnostic I was informed it was something else that was simple and less expensive too. I'm really pleased with them and their work. I will use their services again in the future. Thank you D&D.


  • -Fernando V.

    I was told by a friend two years ago about D&D and they have been servicing my car ever since. Honest, awesome results, excellent pricing.


  • -Brenda S.

    I have been going to D&D for 15 plus years; my husband died almost 6 years ago and he is the one who got us started with D&D. He thought so highly of them and their work that I just naturally continued using them and wouldn't want to go anywhere else. In fact, my husband's truck, which I still have, has to have an alternator or a starter and I plan to have it towed to D&D tomorrow. They are great people and do excellent work.

Call us for service: 904-777-5115

ASE (Automotive Service Excellence)
Jasper
NAPA
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  • Car Care Aware