buying a used quattro

[Jason Bourne]

I'm new to this list and have not yet purchased a Quattro, but I'm currently
considering a 1992 100CS Quattro wagon with about 130k miles on it.  I'm
currently driving a Saab and have owned other european cars, but never an
Audi.  I've searched around for postings regarding common problems or costly
repairs for these cars, but I haven't had any luck finding a good resource.
I imagine there must be some things I should watch out for (electrical,
transmission???).  I'd appreciate any advice you might have regarding this
model year V-6 audi.

Thanks,
Jason Bourne