Every 2 years of use, regardless of distance driven. Every 24,000 miles (38,500 km), whichever comes first. Note that it may be necessary to replace the fuel filter more frequently under severe operating conditions, as defined in the owner's manual. Consult your vehicle's specific maintenance schedule or owner's manual for exact specifications or if you have any concerns or questions. It's important to follow the provided maintenance timeline to ensure optimum performance and efficiency of your vehicle.