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Best Auto Repair, Louisville

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Emissions and Smog Testing


At Duo Automotive, we help our Louisville 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. Duo Automotive 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 502-365-1710 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 Duo Automotive, 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 502-365-1710 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 Duo Automotive in Louisville

Miscellaneous Auto Services
Discover more about Smog Check, Testing & Repair
Undercar Services


what our customers say

Hands down best service I've had done in the city! They make sure to always check everything before giving my car back and if I have any issues they offer warranty! Owner is very professional! Service is always quick and fast.
B

I don't trust the dealership or hardly any company with my vehicle, but when I tell you I would take my car to DUO any day I mean it. The customer is always first with this company and they do amazing work no matter what the task is at hand. I strongly advice this company and cannot say enough good things about them. This goes for high end vehicles as well! Try Duo and you won't regret it.
S

Solid work in a timely manner. Replaced a clutch on my 350z with no problems at all. S/O Cesar highly recommend this shop!
C

I just got my brake pads done there today for a very nice and reasonable price. The owner does great work! So if you're having any car troubles, take your car down to his shop!
G

Does great work here, got my brakes done and my girls breaks done at a reasonable price and quick! Should definitely come here if your looking for someone who cares about their customers and the business.
N

Best mechanic in Louisville KY, great job on the rebuilt engine . Definitely will come back
J

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