𝐀𝐢𝐫 𝐟𝐢𝐥𝐭𝐞𝐫
There are generally two types of air filters in your car. The first kind of air filter is for the engine of your a car. The other air filter cleans the air coming into the cabin, so passengers have clean air.
The engine needs air for combustion, and it is drawn through the filter into the combustion chamber. Dirt and particles in the air could create problems if not filtered. In addition, a dirty filter blocks air flow. So changing the air filter when dirty, will prevent damage and give better fuel economy.
The cabin air filter, usually found inside the car cabin, will prevent dirt and particles from outside coming in. Some air filter are good at filtering dust and tiny particles if you have allergies.