Porsche uses an "Indicator Based Service" maintenance system. This system activates an indicator to remind the driver when maintenance is due. The system takes into consideration actual driving conditions which either extend or shorten the mileage interval between the estimated mileage maintenance intervals.
The "Normal" and "Severe" mileage based schedules supplied are based on an estimated mileage. These schedules have been estimated as closely as possible to the Porsche’s "Indicator Based Service" mileage intervals.
If confusion arises over when and what should be done for a particular maintenance schedule interval, our service & repair facility refers to the "Indicator Based Service" information for complete instructions.