I get where you are coming from and frustrations but a couple of things. 1 there are many of these motors that out up 300 to 400k without issues with low temp thermostats and head studs. The d1s did the high k's with just low temp thermos and head bolts.
The Audi...dont get me started. The thing has out of warranty the capacity to cost more for things such just blend motors for the AC than a good rebuild of a D2 V8... got way to many German cars including Q7 diesels, A5 V8 Coupes, VW Golfs (all recent models) in the family and close friends
Cheers

