Mine's a manual so figures may not apply

Driving around town. 22 - 25 MPG. Stop/Start traffic is a nightmare and really hits the consumption. I try to leave a gap so I can take up the slack, but here in Dubai the clowns see a gap and jump into it.
Driving on highway. 18 - 22 MPG. Keep it below 100 KPH (2500 RPM) and it's pretty good. Start hammering it and it can start getting greedy. lots of fun though.
Driving off road in bush. Sorry don't know haven't got any bush here.
Driving off road in sand. 25 - the sky's the limit. Seriously, if you get your pressures right then it's actually surprisingly good. I run Yokohama A/T-S 285/75 R16 and typically deflate to 10 PSI rear and 12 PSI front. Drive in 4 HI (or 2 Hi) switching to 4 LO if required.