How Often Should the Fuel Filter Be Replaced?
2 Answers
Recommended replacement interval: Replace every 20,000 kilometers, but the actual interval depends on road conditions and fuel quality. Additional knowledge: If the car frequently refuels at small gas stations: Then, the in-tank fuel filter should be replaced every 20,000 kilometers, while the external fuel filter should be replaced every 10,000 kilometers. If the car refuels at major fixed-brand gas stations: The replacement interval can be extended appropriately. The in-tank filter is best replaced at 35,000 kilometers, while the external filter is best replaced at 15,000 kilometers.
I've been driving for almost twenty years and have changed the fuel filter more than a dozen times. From my experience, the replacement interval really depends on the specific situation. Generally, it's safest to replace it every 40,000 to 60,000 kilometers, especially for older models or cars frequently driven in dusty areas. My own car gets a new filter every 50,000 kilometers, and each time I remove the old one, I can see a lot of debris clogged inside. Nowadays, most new car maintenance manuals specify the exact mileage for replacement—for example, some German cars require it at 40,000 kilometers, while Japanese models might go up to 60,000 kilometers. If you often fill up at small gas stations or places with questionable fuel quality, it's best to check the filter 5,000 to 10,000 kilometers earlier. Poor-quality fuel clogs the filter faster and can even affect the fuel injectors. Don’t delay too long—last year, I missed a scheduled replacement and suddenly couldn’t accelerate on the highway, which gave me quite a scare.
