Does a Dirty Car Air Filter
Cause Bad Gas Mileage?

Claim: A clogged car air filter is a death sentence for high gas mileage.

Fact: If you have a newer model car, this isn't the case. However, in older cars, this is true to some extent.

When your air filter is clogged, it doesn't allow air to circulate properly. A result is that you don't have enough air getting to your engine.

What does this mean?

It means that your car is burning fuel inefficiently, which means lower MPG.

"How Often Should I Change My Air Filter?"

To improve gas mileage in your vehicle, check your car air filter whenever you change your oil. Usually, air filters need to be changed once a year, but it's a good idea to check periodically to ensure proper air flow to the engine.

It's also a good idea to check your car's owner's manual for instructions on when to change or clean the air filter.

"How Do I Change My Air Filter?"

Changing your air filter is incredibly simple to do.

  1. Purchase a Replacement Air Filter. Be sure you know exactly what type of air filter you need for your car. Check the old filter or consult your owner's manual. Take the old filter with you to the store or note the specifications you need.

    Use this form to find replacement car air filters and other auto parts specifically for your vehicle.

  2. Open and Secure the Hood, as this is where the air filter is located.
  3. Open the Air Box Cover. To do this, release the clips of the cover and remove it carefully.
  4. Remove Dirty Air Filter noting how it is placed inside the housing unit. This will ensure proper placement of your new air filter.
  5. Clean Out the Housing if it's particularly dusty. Just a simple dusting will do and will prevent getting the new filter unnecessarily dirty.
  6. Put In New Filter. Make sure you install it exactly how the old filter was.
  7. Replace and Secure Air Box Cover, fastening the clips down securely.

Need more help? Watch this instructional video.

How to Clean an Air Intake Filter -- powered by

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