Air filter is an important part of the automobile engine system, and its relationship with the engine performance is mainly reflected in the following aspects:

Air intake efficiency: The air filter can filter out dust, particles and other impurities in the air entering the engine combustion chamber. A clean air filter can ensure sufficient air flow into the engine, thereby improving the combustion efficiency of the engine.
Combustion quality: Clean air helps fuel and air mix more fully, thereby improving combustion quality, reducing unburned fuel emissions, and increasing engine power output.
Engine life: If the air filter does not effectively filter impurities in the air, these particles will enter the engine interior and accelerate the wear of engine components, such as cylinders, piston rings and bearings, thereby shortening the service life of the engine.
Fuel economy: A clogged air filter limits the flow of air, causing the engine to increase fuel injection in order to maintain normal power output, which reduces fuel economy and increases fuel consumption.
Emission control: A good air filter can reduce pollutants in emissions, help the engine meet emission standards and reduce its impact on the environment.
Engine protection: In extreme environments (such as dust storms, haze, etc.), the role of the air filter is more important, which can prevent a large number of harmful substances from entering the engine and protect the engine from damage.
Therefore, regular inspection and replacement of the air filter is essential to maintain the best performance of the engine. Ignoring the maintenance of the air filter may lead to decreased engine performance and even cause more serious mechanical failures.