Haval H6 c

Good morning I have a huge problem I bought a haval h6c and the car is great,l love my car but I can’t go anywhere with my car due to the car’s fuel. I am paying a car that I can’t drive. The fuel consumption is to expensive and not even a V6 is that expensive. Now I want to trade the car but I can’t because of the price drop. The car has 20000km on and I tell everyone don’t buy this car due to fuel. But I must say the car drivers like a dream. If someone maybe can help me with this problem or can give me some advice what to do?