1999 a6 avant-should i purchase?

[wonicles]

I am looking at a 1999 audi a6 avant at a local dealership. The car appears to have been very well maintained (they have the service records from the beginning) and i was looking for advice. The car has 165000 miles on it and i was wondering if anyone had any tips on the longevity of the car. it is the 2.7 v-6. All the recalls have been addressed, steering work, etc. I would have to double check when the timing belt was last done but if anyone has the info on how long a timing belt job would last, that would be great. The only thing that really is a sticking point is an odor from under the hood that smells a little like burning oil/rubber/metal. I understand that it may be a leaky cam or valve gasket (from what i have read in posts) and that this may be common and just keep an eye on the oil level. I drove the car and beat on it a little bit, tested the tiptronic tranny and everything seemed to be working great. After the trade in from my wife's 1999 oldsmobile bravada, the car will only cost me $2600. I personally have run VW's for quite a while and the a6 avant is a perfect car for my wife-kid and groceries, etc. any help would be appreciated. Thanks