The air filters protecting your engine and the interior of your vehicle filter air, keeping out harmful debris and dust. If you start to have dust in your vehicle more often, or there is an odor you can't get rid of, it's probably time to change your cabin air filters.
The engine air filters keep your engine from getting clogged up with dirt and dust from the road. If your engine air filter is dirty, this can make your engine work harder to run your vehicle. This makes your car less efficient, and you'll spend more money on gas to travel with your vehicle.
The air filters throughout your vehicle should be changed about every 15,000 miles, or sooner if you notice an issue. Protect your engine and your interior air quality by scheduling an inspection of your air filters, and getting the air filters changed if they are clogged.