How Often Should the Car Air Filter Be Replaced?

2 Answers
DelAdriel
07/24/25 2:34am
Car air filters should generally be replaced every 20,000 kilometers. Below is relevant information about air filters:1. Consequences of not replacing: If the air filter is not maintained or replaced for a long time, the engine will have difficulty drawing in air. Improper fuel-air mixture will lead to increased carbon deposits, thereby raising fuel consumption.2. Function: The car air conditioning filter is used to filter the air inside the car cabin and the air circulation between the inside and outside of the cabin. It removes dust, impurities, smoke odors, pollen, etc., from the air inside the cabin or entering the cabin, ensuring passenger health and eliminating odors inside the cabin. Additionally, the air conditioning filter helps prevent the windshield from fogging up easily.
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AshlynLee
08/10/25 10:10pm
I always recommend replacing the car's cabin air filter every 12,000 to 15,000 kilometers or once a year, based on my years of repair experience. The replacement interval should also consider the driving environment: if you frequently drive in congested city traffic or dusty areas, it's best to shorten it to 8,000 kilometers. Checking it yourself is simple—just take out the filter and inspect it; if it's blackened or clogged with dust, replace it as soon as possible. Otherwise, poor airflow can reduce engine efficiency and, over time, lead to more wear and tear. I've seen many cars incur higher repair costs due to neglecting this. Regular maintenance can save you major headaches, so I advise not to delay. Remember, replacing a filter doesn't cost much, but health and safety are priceless.
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