I get 8.4 to 8.8 km/l in city driving. Two tricks. Keep engine cool by topping radiator once a week. During the or a traffic light put gear in neutral position.
Bro, do tell us more about this new invention. How does it works etc. My ride clock 10liters at hway 120kmh n 6liters at 90kmh also on hway at constant speed. I conclude 90km is the most economic for fuel