Managed 57.8mpg from London to Birmingham on Friday traffic, I did 12 miles in london town and 20 miles on country roads and the rest on the motorway with cruise set at 75mph, mfd reading but last time I checked with filling up it was pretty bang on so is reliable and the fact I'll have got 400miles out of £45 of shell optimax nitro with 200ml of comma 2 stroke, And I don't hang around usually just this 1 trip back home i drove carefully, I didn't boost it hard and kept on lag most of the time whilst accelerating, I still kept up with traffic but just a bit slower getting there.
Not bad for a pd130 sport running 200bhp on 225/40/18 tyres and a boot full of tools
Here a vid of my mfd for sceptics
http://i180.photobucket.com/albums/x62/ ... 5ACC11.mp4