In general, it is recommended to replace the air filter every 10000 to 15000 kilometers because over time, clogged air filters can affect the engine's intake air volume, resulting in changes in the air fuel ratio within the engine and affecting the combustion process, resulting in internal carbon deposition, unstable idle speed, reduced power, increased fuel consumption, and so on.

Air filter maintenance and repair:
1. Clean the filter yourself and open the front hood, where there will be a black square or rectangular box. Then there is a large ventilation pipe connected to the throttle valve. There are some screws and some clips on top. It is easy to open and remove. For general cleaning, just blow off the dust. If it is too dark or has been used for a long time, it is recommended to replace it. When installing, it is also necessary to filter the air and blow it inside first.
2. Regularly cleaning the air filter or replacing the filter element is a very precise component of a car engine, and even the smallest impurities can damage the engine. Therefore, before air enters the cylinder, it must first pass through the fine filtration of the air filter before entering the cylinder. The air filter is the guardian angel of the engine, and the condition of the air filter is related to the lifespan of the engine.
If a dirty air filter is used during driving, it will cause insufficient intake of air into the engine, incomplete fuel combustion, unstable engine operation, decreased power, and increased fuel consumption. Therefore, cars must keep their air filters clean.
3. Under normal road conditions, the air filter must be cleaned and maintained when driving 7500-8000km. The maintenance interval should be correspondingly shortened in areas with high levels of sand and dust. Dry air filters are widely used in new passenger cars. The filter element of the dry air filter is made of resin treated microporous filter paper, which has the characteristics of good filtration effect and convenient maintenance.
Due to different vehicle models, their structural shapes may differ, but their maintenance methods are basically the same. When maintaining it, it should follow the usage mileage specified by the automobile manufacturer.