Fuel consumption at Soul BJ 2010

Hello together, since December I am proud owner of a Kia Soul. He is speedy, almost already sparkling, but at least at the final speed over 190 km /h. However, when I drive a lot of highway, he really consumes a lot of fuel (over 9 l). also in the city he does not come under 8.5 l. OK, I also drive many short distances, that’s probably to be expected. But was the opinion, with highway with a guide speed of about 150 km/h, the consumption should be actually more moderate. Your experiences? Have as winter tire 16 “, the summer tires are 18” (are raised at the beginning of May). Is there consumption even higher or rather lower. D Beautiful greetings KiaFrog / Gisela