i have mehran 2013 august. it was givng me 15 km/l in local. At 3500 km i had its second inspection with tuning , engine oil and gear oil replacement. after this inspection my average drastically drops to 10km/l i have changed many petrol pumps , made many querries have my air filter cleaned, my ignition timing checked and tuning. and still its giving me 10 km/l with very light foot pedal drive. The company Suzuki Macca Motor is sayng that there is no fault and i seriously dont have any thing about which to complain. please help