Air filter: Prevents harmful debris, dirt and contaminants from entering your engine. Cabin filter: An implementation that began appearing in vehicles in 2002, it prevents dust, pollen, dirt and other pollutants from entering your car through your A/C and heat vents.
Reduced Fuel Economy
Dirty air filter increases fuel consumption and the make an engine not to start smoothly.
Misfiring Engine
An engine misfiring can be stressful, but it is easier to fix in most cases.