Dirty air filters can also cause your engine to run at less than peak efficiency. Regular visual checks of the air filter will tell you if it needs replacing and your owner’s manual will also recommend appropriate replacement intervals. Clogged filters can cause up to a 10% increase in fuel consumption.
Cabin Air filter:
The cabin air filter, a feature found on most late-model vehicles, cleans the air that comes into the interior through the heating, ventilation and air conditioning system. It catches dust, pollen and other airborne material that can make riding in a car unpleasant, particularly if you have allergies or other respiratory problems.