I hope people don't dislike Audi drivers too much, I might become one. got word of a 2006 A6 with the 2.7tdi engine coming up soon, one owner plus the supplying dealer from new, full Audi service history, around 68,000 miles and in my price range. One question I have is about this engine, I was told anectdotally that the early 2.7 is a bored out 2.5 while the later one is a stroked down 3 litre tdi. I've been looking round the web for info and can't determine fully. I did find the attached photo of a 2.7 but it's clearly a timing belt engine whereas they're supposed to be chain driven. Anybody know if ther is an early/late 2.7 engine?