Mine uses about a litre between visits to VW (12 months ~10k)

Fairly acceptable.

I also do interim services at the 6 month mark (about every 5,000kms). Done by me though. Its a very easy car to work on and filters are cheap. Being that you only do it once a year its fairly easy to wait out an oil special too. Cost maybe about 60-70 bucks max incl genuine filter and an oil sale