I achieve without any problems 5,2 - 5,5 l/100km (according to BC). Real consumption is BC + 0,6l. There was one tour, I drove slowly (100-120 km/h) and achieved 4,6l on BC, range almost 1200 km. Worst consumpution I had - 8,2 on BC (real 8,2 + 0,6=8,8 l) - in Germany 180-200 km/h.