I average around 32-34 and most of my driving is around town, 88k on engine and i do hammer it on quite regular but if i go for a long drive on motorway cruise control on at 70 I'm averaging around 40-45....
I go to the BTCC every year at knockhill and the drive from the boat (Stranraer) to Dunfirmline (last year was first time in the Veccy), I sit at a constant 60mph (boat arrives at 7am, need to kill time lol) and I average over 55mpg, got over 550 miles out of the tank last year!!