You need a new air filter for your car every 12 months or 12,000 miles, whichever comes first. You can pay a mechanic and give up your car for a day, or you can replace your air filter at home in about ten minutes.
First, find your filter under the hood of your car. It’s in a black rectangular box with metal clips on the side. Check your owner’s manual if you don’t see it as soon as you pop the hood.
Open up the casing, and check out how the air filter fits inside it. Make a note of which way the filter faces.
Remove the old air filter, and insert the new one exactly how the old one sat.
Remember to close the metal clips when you’re done.