@RichardH - There are 2 types of service regimes are called Fixed and Flexible.
Under the Fixed service regime, the car is serviced overy 12 months or 9,300 miles whichever comes first. The mileage changes from 9,300 to 10,000 for cars over 3 years old).
Under the Flexible service regime, the car decides when the service is due based on the type of driving, type of journeys, engine load etc. (see below for more details), but the intervals will be
up to a maximum of 18,600 miles or 24 months whichever comes first.
The delivering dealer should ask the customer about their anticipated annual mileage and types of journeys and recommend the appropriate service regime and the car will be set to that as part of the PDI before handover. For anyone buying a pre-owned car, it may be set to a regime that doesn't suit their needs or usage, in which case they can either wait till the next service is due or visit a dealer earlier and ask if the service type can be changed.
Some owners may prefer the Flexible service to minimise costs, but if they then drive lots of short, stop-start journeys, the car is likely to decide a service is due long before the 18,600 miles or 24 months is reached, thereby reducing any cost savings. But if your anticipated use fits the Flexible criteria and intend to sell the car when it's 2 years old, then you may avoid needing any service.
Other owners prefer the predictability and peace of mind offered by the Fixed service.
The following information can be found on the VW web site at
Service schedules | Volkswagen UK