My 59 S3 does use a fair bit, more than I would consider normal, but less than what Audi states is normal!
I think it uses about 0.5l every 1.5-2k miles atm.
My previous 08 S3 didn't use a drop.
I don't mind though as in my eyes it keeps the oil fresh
There are a lot of threads on oil consumption.....it varies a great deal,with some cars drinking the stuff,and others very little.
Mine averages about 1 litre/1000 miles.
Does the bulk of your oil loss end up in the catch tank or just burned and exiting the exhaust?
Neither my S3 or my son's TTS uses much if any at all. However, our TT TFSI 2.0 does have a bit of a thirst.
Both TTS and TT bought at about 20K miles.