The handbook says that 1 litre every 1000km is considered acceptable, which equates to 1 litre every 625 miles, which lets be honest is a joke!. I've just gone over 5000 miles since buying the car, and to date I've put in just under 1 litre of oil. (averaging about 250ml every month, which judging by others usage I'm content with). What I'd been doing up until recently was every time I checked the oil and it had dropped to the middle of the dipstick, I would top it back up to maximum. This last time I decided to simply monitor it every week and have noticed that it will drop to the middle of the dipstick and then sit there, I havent topped up in 6 weeks now, and the oil hasnt moved. From what I can gather, the 2.0 TFSI engine is renowned for using oil, but unless you're outwith the minimum acceptable usage, audi dont give a rats ***.