Oil is Key
I had the dealer fix the oil consumption problem, but it was still consuming oil.
Better, but not great. The dealer change oil with Castrol.
I decided to try other brands.
Total full synthetic 5w30 meeting Audi 502.00. Burns 1 quart in 2.5k miles.
Top off with Penzoil full synthetic not meeting Audi spec...burn 1 quart in 1.5k miles.
Penzoil full synthetic Euro spec 5W40 meeting Audi 502.00. Pretty good, but still burns 1 quart in 2.5k miles.
Top off with Total full synthetic 5w40 meeting Audi spec. Burns 1 quart in 3.5k miles.
Liqui Moly 5w40 meeting Audi spec. 1.5k miles and still show 100%.
Stick with quality oil and you will see a difference.
Full synthetic requirements/definition in the US is very relax so I don't think it is as good as Europeans.