After reading past threads would i be correct in thinking 29mpg knocking about mostly at 30/40/50 mph, in our 2003 34000m JTD is slightly down on normal, i was expecting around the 43mpg mark, and 50mpg on a run, the car runs fine no lights on dash, but still could the MAF sensor be on the blink, many thanks Alan/Alison new bug owners.