Mileage is not good

Everything good except mileage..its 9.5 kmp/l only. I drive it from 35 km with full tank to 139 km and it consumes 10.93 litre petrol. Which gives 9.5 mileage only which is not good according to me. Hyundai should work on mileage factor also. Also there is no roof light on driver side of s model which is must for all cars.