As per title, I have an A4 1.8T saloon and have regrettably decided it has to go. Not that I dislike it or it's knackered but the worst thing is it's not got enough room, the rear seats don't fold flat and me and the mrs. have got into camping now and then in the summer so I could do with a diesel estate. Don't much fancy long journey's to family in Cornwall in her 306td! Can hear the bloody thing rattling from here... Plus I have a bought another 750 bike for fun after 3 years off one. Anyway, to the point - I want some advice on a decent diesel, have been thinking obviously of another A4, (but dunno if I can afford a 99 on TDi), A6 TDi or maybe a BMW 325 or 525tds Gonna spend about £3.5k providing I get good money for mine. Anyone know much about the above cars, MPG, possible engine problems with the bigger diesels i.e the BM or the Audi V6 Tdi? I know the 1.9TDi is popular but would probably prefer a bigger one as have a few long trips such as Le Mans etc I want to do this year. Any info much appreciated.