Perhaps a tad optimistic? Thought so 'cos it's avoiding the road duty and slightly illegal :lol: , but 100 mpg is spot on. For every 40 mpg that you get, for the same money I'm getting 100 mpg. Been doin' it for 3 years now.
My 130 is like siht off a shovel and using my special recipe diesel costs 40p litre, so driving like a maniac I still get 100 mpg at forecourt prices!!