The Audi is faux-wheel drive. If its a DSG, prepare to shell an additional $450 on top of the haldex and rear diff changes every 40k. Also, haldex for the most part blows... It's a lame awd setup. You're 99.9% fwd, unless you lose any kind of traction. Also, the 2.0tfsi they use in it (not the tsi) is the same old problematic motor in the early gti's. while they may have fixed the pcv system, the hpfp and cam follower design still is awful.
For that price, get a used 911.