If you go the petrol route you should rather go for the 4.0 V6 - same consumption than the 2.7 but way more power.
In my opinion the 2.7 vvti is a terrible, underpowered motor. the 3.0d4d is a great machine but expensive then 2.7 petrol.Compared to the d4d, the 2.7 is not as fast... due to a missing turbo 
the d4d definitely gets 10-12km / L.i disagree about servicing costs on the diesel.diesel has no spark plugs so servicing would not be as much as petrol,consumption on my diesel i get around 12KM/L. thats driving properly. Driving like an animal i'd get around 9KM/L.Power is Excellent! Long distance driving is such a pleasure!
