As you do such a low mileage all your servicing really needs to be time dependent.
Engine Oil and Filter - at least every 12 months
Pollen Filter - at least every 2 years
Air Filter - at least every 4 years (VW say 60k / 6 years but that is too long, IMO, for such a cheap to replace part)
Plugs - at least every 4 years
Brake Fluid - at least every 2 years
DSG Oil and Filter - if it was my car I would do this at least every 4 years, although VW only give a mileage of 40k miles.
Haldex Oil and Filter - if it was my car I would do this at least every 4 years, although VW only give a mileage of 40k miles.
You have to look back and see when each was last done and service based on that.