Im surprised that theres no 4WD as well, but BMW have worked hard at 50:50 balance etc, and I suppose it would go against everything they say.
Regarding the fuel economy, thats one of the reasons why Ive never purchased the V8 M3. My old RS4 used to average 16ish, at least the RS3 hits 22 daily, and on a run 30+ is easily possible(the long 7th gear helps this). Its a lot more efficient than the ED35 my wife had. Bear in mind most of our driving is school and shopping runs.......According to the figures the new M3 will be better on fuel than the RS3. I know people will be saying that you don't buy a car like this to worry about fuel, but it always has to be a consideration, with the escalating fuel prices, and I hate standing at the pumps!( and before you say it I won't drive a diseasal)
Oh and its £55k, before options, but it looks to come very well spec'd indeed