I have a new record! Just did a fillup today and achieved 19,3 km for one liter of fuel. That is about 44,5 mpg I guess? I used some of the hypermiling tips because it's hard to fit in all with a lot of trafficjams and such. I used the coasting in neutral towards roundabouts, motorway exits and traffic lights, easy on the throttle and anticipation. In my opinion it is possible to achieve the 20 km/l mark and that will be my goal