Help Please. At the car comes to the first stop at the end of a long(ish) drive at high speeds (60mph +) there is a noticeable smell of diesel in thecabin which then disappears once you are on the move again. The engine shows no signs of malfunction when the smell 'appears' however I'm worried that something isn't right. Does a 2004 (53) plate 2.0 TDCi 130 (6) have a dpf and would this be the beginning of an expensive failure? Any help much appreciated.