Volvo C30 1.8F Consumption

Hello I have a C30 R design for about 2 weeks, I have full fuel, now it is a little less than half empty and it has only 360km on the clock, of which 100km highway with constant 100-120kmh and the rest city traffic, car was driven up to max. 3000 turns, otherwise always switched up early. Well the question, the consumption seems to me very high, is that because the car is new or … consumes this variation simply so much ? air conditioning is off ! Can you tell me your experiences on the topic of consumption and new cars etc. Thank you