I have a 2014 Crosstrek
I have a 2014 Crosstrek hybrid that gets between 5.4 l/100 and 5.8 l/100 in mid teens temps (60 degrees American) on modestly hilly terrain highway driving -if I am careful. I monitor the gas consumption gauge carefully. In city driving with few stop and goes my best is 4.4l/100k. For those metric challenged out there (and using imp gal.) the hiwy consumption is around 60mpg and the city is 64.2 (best score). The reason people cannot do this themselves is a matter of driving style/habit, below freezing temps or very hilly topography. Use the monitor resources and keep the consumption needle on the gauge at the right extreme stop as much as you can and you will see this kind of consumption too.