Fuel economy not good only 17 km in diesel car

All function in this car good but 5 point for maybe improvement 1 starting pickup not good in 5 second 2 milage is not better comparable others company 3 shockers work not good in a minimum speed ie 10-20km 4.back seat not compete. 5. duel tone deskbord quality becomes poor cause joint technology. If you maintain not joint policy than a good performance by deskbord