Tyler/Rob - What kind of driving are you doing to get 11.5 mpg? Just commuting? Even my e60 M5 managed 12mpg for my commute!
Cidair/Spot/M54 - Think I'll have a go with D2 tomorrow. Probably warm up with S2, so I don't take revs too high for 1st 20 minutes or so, then switch to D2.
Current Cars: M5 (F10) / Porsche 911 Turbo (997) / X5 40d Msport
Previous Cars: M5 (E60) / M3 (E46) / TVR Cerbera