[sydneytreg]

Have you looked at the 3.0 tdi, less of a unicorn than the v8. Most problems around the drive train are well known and have solutions.

 

[sydneytreg]

The facelift models, my08 and later had a lot of the "bugs" fixed.

 

[sydneytreg]

I haven't driven the v8, but by all accounts it is one of the more pleasurable experiences you will have in a leather seat. But like Nooby said, you have gotta have your eyes wide open and expect that things are getting a little long in the tooth, things like rubber hoses will be harder and prone to crack as an example. If you have the inclination , tools and patience and a little bit of know how, then it may be worth taking the punt. Definitely have it scanned with a Vcds for error codes and then drive it for at least an hour and then Re scan before you give them a dime. Plenty of stories of people buying a lemon and realising 200km into the trip home.