Although the air filter should be inspected upon every oil change, how often should it be replaced?
Answer Every 12,000-15,000 miles
Although like many other aspects of a car, the frequency of air filter replacement differs per vehicle, many require replacement every 12,000 to 15,000 miles. Not changing your air filter can reduce acceleration up to 11 percent.
Asked by Tom Cohen · Last updated 4 years ago · 1.5K views · SOURCE