2001 Audi A6 2.7T Quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)
If this car were a woman I would marry her. The tiptronic shifts wonderfully and in manual mode holds gears right to red line. The quattro all wheel drive is excellent in the snow and when pushing hard through a corner. The coach work is beautiful. And the engine is a gem.
Very fast from 40 to 70 in 2nd gear. Better build quality than BMW or Mercedes.
I have heard some horror stories about year 2000 models. Turbo problems, and the cost to rebuild a blown one is between 6-12 thousand dollers! Buy a 2001 to 2004 and get a good warranty just to be safe.