How much gasoline does your Forester 2.0 consume on average?

Hello, in another Subaru forum it can be read that one of its Forester 2.0 latest models can easily drive with 6,8 – 7,4 l petrol at 100 km. Our My04 needs on average 9 – 9,5 l to 100 km (this is calculated from the gas consumption which is always just around 12 l). Our Forester needs in gas operation 30% more than with petrol. We drive on average 400 – 450 km per week short distance, country road, AB mixed. What do your so need? Gruss Uwe