We recently did a 1012 mile trip from South Tyneside to Cornwall/Devon and back. It was our first long trip in the Jazz Crosstar. Most of the driving was motorway (A1M, M18, M1, M42 and M5) plus dual carriageway and various country roads. We pretty much stuck to the speed limits and for the whole trip we recorded 57 mpg (dashboard display). Having read that 50 mpg was the best you could expect from the hybrid for motorway driving, I was pleasantly surprised.