I have never owned an Audi. I found a 2009 3.2 6cyl (17kmi) and a 2010 2.0T (18kmi). Mechanically speaking, which is the better engine for the next 30-45,000 miles of ownership + maintenance? Please help - I have heard some oil sludge/burning issues with the 2.0T???????? I need advice please! thx. Scott