I think the figures you've quoted are for diesel engines. I always had my previous golfs/audis on LL and they all hit 160k without dropping a beat. The light always came on at about 17k for them.
Applies to both petrol and diesel; see service information from the July 2012 Mk6 Golf new car brochure below. It doesn't make specific reference to petrol or diesel, so would apply to both.
Service Intervals
Volkswagen are pleased to offer you a choice on how your Golf is serviced. The appropriate selection is entirely dependent on how the car is likely to be driven and its general use. To help you identify which type of service would be most suitable, please refer to the following guide.
The Fixed Service is recommended for vehicles that will cover less than 10,000 miles in 12 months and if the vehicle
is likely to be used in the following way:
• Predominantly urban driving, short journeys with frequent cold starts
• Activities regularly producing high engine loading,
e.g. frequent hill climbs, driving with vehicle fully loaded and towing
• Uneconomical driving style using high rpms with heavy acceleration and heavy braking
The service intervals for the Fixed Service are as follows:
• Oil change service
Every 10,000 miles/1 year (whichever is soonest)
• Interval service
Every 20,000 miles/2 years (whichever is soonest)
• Inspection service
Every 40,000 miles/3 years (whichever is soonest)
The Flexible Service is recommended for vehicles with a daily mileage of more than 25 miles where the vehicle is driven regularly mainly on longer distance journeys. The vehicle is driven mainly at a constant speed with minimum vehicle and engine loading, minimal towing and driven in an economical manner.
With the Flexible Service the vehicle can cover anywhere between 10,000† and a maximum of 18,000† miles or 24 months (whichever is soonest) between oil changes. Inspection service
is typically in the third year of ownership and thereafter every second year, for vehicles with an approximate annual mileage
of 10,000 miles.
† Please note that mileages are approximate as the service indicator system uses kilometres as the distance measurement. Please consult your authorised Volkswagen retailer or repairer for advice and full details.