Ah what a quandry! Time for a new car, well a newer car and bigger more to the point, new addition to family means the 3 door A3 doesn't cut it anymore. So Ive had the A4 B7 and B8 debate with myself and read the threads on here and I think I'll plump for a B7 Tdi avant S-line 2.0. I would like a top spec one and there is a few around but I have a concern. 140 or 170? I've read the threads and my conclusion was I'll go for a later 140 (to avoid head issues). Id even plump for the black special editions and I wouldnt need to do anything to it (except maybe xenons). But the 170 puts me off. Ive read about the 170s which in theory sound great but poor MPG puts me right off. It seems the hybrid Piezo injectors and PD tecnology didnt work out too well..... Anyway MPG is more important than raw pace to me at the mo. So My question is.... are the 170s really that bad? Has anyone removed the DPF and blocked the EGR both of which are known to improve MPG (with appropriate remap of course). I havent really seen a conclusion on this? I'd rather get a 140 and upgrade the interior, RNS-E and black bits out than get a top spec 170 and be left with a poor performing engine (mpg wise). What are peoples thoughts? I wouldn't want to get a 170 and then spend £££ making it get better mpg when Id be happy with a 140 etc.... Debate!