I haven't worked out the mpg, but I've had as little as 130 miles out of a tank when constantly spanking it, and as many as 190 if showing restraint. 170 miles seems to be about the average range. I never ride on dual carriageways or motorways, so YMMV.
Took in 160 mainly motorway miles yesterday (varying speeds up to 85 ish) and there was about two litres left when I got back......and that's running the bike in so fairly restrained. Might need to try 98 RON that usually gives 10 percent more range on previous bikes.