Modern fuel consumption

Servus in the round I made a new mocha in February for the occasion. The vehicle had convinced me of the look and the complete package. The vehicle has full equipment and 130 hp engine. Of course I am currently picking up the vehicle (currently 1400km) with velvet gloves. Provided that this is a modern vehicle, I can only laugh about the fuel consumption. If I consider that I have halved my vehicle class, i.e. 6 Z ylinder on 3, from 340hp to 130hp and from 2.5T to 1.3T top speed from 280kmH to 200kmH I can only marvel at the current consumption, and regret this backward step. Straight line highway, fixed speed as shown How does it look with these values?????