It's true, the 5 speed jetta tdi is capable of 50mpg. Crazy. And my 2000 dodge cummins is not that expensive to fix. At least not compared to my buddy's powerstroke.
I also own a 2000 a4, and while things can be expensive for it, I have found a great private Audi/vw mechanic who does things dirt cheap somehow. I can't believe how cheap some things have been. I think you get what you pay for and just maintain everything as well as you can.
2005 Isuzu NPR turbo diesel 16' box
2000 Ram 2500 24 valve CTD
1996 Ram 2500 12 valve CTD
1999 F350 7.3 PSD flatbed
20' enclosed, 16' open, 14' dump
3 Walker MT 48", Toro Z500 60",
Toro proline 48", Dixon ZTR 42"
Stihl small equipment
SC licensed pesticide applicator