Fuel filters are more important in today's vehicles because modern designs include fuel systems with tight tolerances. Unfiltered fuel may contain a lot of contaminants, such as paint chips, dirt, and rust. These contaminants must be removed to prevent accelerated wear and eventual failure of fuel pumps and injectors. The particles on the high-precision parts of the fuel injection system are abrasive, which can cause great damage and ultimately unnecessary costs.
In order to obtain the best performance, the fuel filter in the car should be replaced regularly according to the car manufacturer's recommendation. Following the recommended maintenance schedule provided by the car manufacturer will help ensure that your vehicle reaches the lifespan you want.