ok so i f you doing 33 mpg in a 180hp quattro which is suppost to do less mpg than my 150hp v6 i would suggest i need to do something anybody any ideas, i put some injector cleaner in 2 weeks ago and did not seem to make any difference it was the red x extra one, does anyone know if the injector cleaners you put in the chamber with a new diesel filter work ok with the audi's, a lot of garages use this to get older diesels through mot's, it gave my old 405 with 130000 miles a whole new lease of life, qicker and better fuel econ.
Or Could it poss be sensor failing could cause probs?