To determine if a car's air filter is clogged, several key symptoms can be observed, including a noticeable drop in engine power, difficulty accelerating, abnormally increased fuel consumption, idling vibration or stalling, and darker exhaust emissions or black smoke. If a large amount of dust or impurities accumulates on the surface of the filter element, with visible dirt to the naked eye, it usually indicates that cleaning or replacement is needed. It is best to check the filter element every 5,000 to 10,000 kilometres; in dusty environments, this interval should be shortened to 3,000 kilometres. Regular maintenance of the air filter not only prevents reduced combustion efficiency and carbon deposit issues caused by insufficient air intake in the engine but also extends the engine's service life and reduces additional fuel consumption by approximately 10% to 15%. Choose original or specification-compliant replacement filter elements and ensure correct installation orientation to maintain optimal filtering performance.
