The replacement cycle of a car's air filter needs to be comprehensively considered based on driving mileage, usage environment, and manufacturer's recommendations. It is usually recommended to replace it every 10,000 to 15,000 kilometers driven or once a year. If the vehicle is often driven in harsh environments such as dusty areas, hazy conditions, or rural roads, the replacement interval should be shortened to every 5,000 to 8,000 kilometers or every 3 to 6 months. For highway driving, the interval can be extended to 20,000 to 30,000 kilometers. Dry filters (adopted by mainstream models) can be cleaned of light dirt with compressed air, but they need to be replaced immediately if severely dirty or damaged. A clogged filter will lead to insufficient air intake and reduced combustion efficiency, manifesting as decreased power, increased fuel consumption, and unstable idling. The maintenance manuals of different brand models may vary; for example, some turbocharged models have higher requirements for air cleanliness and need more frequent replacement. It is recommended to check the filter status during each maintenance, especially after rainy seasons or sand and dust weather, to ensure the engine's optimal performance and extend its service life.
