Thats the same 270 crank engine as in the 2000 TDM 850,The TDM 900 270 crank had fuel injection/ceramic bores and that does about 60mpg.So that bike with the same 270 cranked engine with only 700 should see 65-70mpg+Its a brilliant engine with loads of torque etc.I have had my TDM now since 2005 its on 82K miles,cant fault it.