Just reviving the thread,
I have the same issue, infact i had it with my Pathfinder it used to give 300 Kms in 110 Dhs. (Dubai-Sharjah Traffic) where as I have asked many other users and almost every one said that their do 400 kms in same amount of fuel.
So I sold my loved one and then bought a 03 Qx4 in a hope that it might give a better economy (I love pathfinder Platform), but still the economy is same.
Can you guys share your fuel consumption and any ideas you have successfully implemented to better the fuel economy