why does the mpg needle go to 0 mpg though?  and its not normal, just been speakin to a dude , recons his gets 150 for £20 quid,, 100 miles for £ 30  is  24 mpg ,,  mmmm  , maybe your right a good service , air filter etc would sort it a bit,  but even hardly touchin accelerator , the needle shows 0mpg,  can the mpg needle be trusted?