What happens when a filter wears out?

Air Filter エアフィルタ

A dirty or clogged air filter dramatically reduces power and fuel economy.
(estimated time to change air filter – 15,000 to 20,000km as per Owners’ car manual)

Oil Filter オイルフィルタ

Eventually particles restrict oil flow through the filter, thus its ability to lubricate the engine reduces.
(estimated time to change oil filter – 5,000km to 10,000 km as per Owners’ car manual)

Fuel Filter フューエルフィルタ

Eventually, particles block the filter, leading to lack of performance, misfiring and breakdown if not replaced in time.
(estimated time to change fuel filter – 25,000km to 40,000km as per Owners’ car manual)

Air-con Filter エアコンフィルタ

A dirty or clogged air-con filter can cause musty odors in the vehicle and cause contaminants to become so concentrated in the car that passengers actually breathe in more fumes and particles when riding in the car compared to walking down the street.
(estimated time to change air-con filter – 15,000km to 25,000km as per Owners’ car manual)