My new 2008 GV V6 4x4 has about 700-800 miles on the odometer and I've been getting 18 City & 23 Highway = 22 Combined MPG... (should be 1-3 MPG high once the engine breaks in).
Sorry, I have no clue how many Liters per Km that is... I live in the US where our measurements make sense. haha
Anyway, it is RWD with Auto 4x4... the 4H & 4L are if you want to LOCK the system in 4x4, instead of letting the computer decide what to do.