I recently completed a 2,600 km (about 1,600 miles) road trip with about 90% of the driving on the highway and the rest in cities - I never use ECO mode and for the whole trip I got 9.2 litres/100km (25.6 MPG). Driving only in the city I will get 11 to 12 L/100km ( 19.6 to 21.4 MPG). All in all, pretty good for such a large vehicle.