Dirty air filters do not change gas mileage. The modern computers in cars always keeps the mixture correct. All of your information in this regard is incorrect and should be changed. By anon131082 — On Dec 01, 2010 how can you possibly find a tissue in a car air filter? it happened...
An air cabin filter is an important component in any vehicle's heating and cooling system. It helps protect the passengers from contaminants in the air they breathe.