Audi A4 using alot of oil

VW/Audi engines are known to use oil from new, but they usually settle down once the engine is run in. The rate of oil usage Audi has quoted you is about what you would expect. A litre per 1000 km is too much, however, and it would seem Audi accepts as much given they are prepared to do some rework on the engine. Have the work done as the company recommends and keep track of what oil is used after the rework.