LongLife Service regimesThe LongLife Service regime is so called because there are no set service intervals and, depending on how you drive your vehicle, and the conditions of use, a service will be required anywhere between 9,000 miles or 12 months (whichever occurs first), up to a maximum of 20,000* miles or 24 months (whichever occurs first).
PDF Link >Personally I swap out oil every year or 10k.
Could the car be an import? Or just a mixup with the German Service Book.