I wish I knew more about old A4's and their quirks, but I'm make sure the timing belt is new, I'm pretty sure that's service is near 100k, and you don't want to find out what an interfearance engine does without one :->

It's hard to tell not in person, but that car looks great! It is pretty loaded options wise. That price looks great based off kbb's #'s too (exelent cond. private party price basically). It never hurts to try and negotiate a little tho :->