My last 3 pumps has been as below:
398.7 km @ 26.79 litre -> 14.8 kml
429.3 km @ 30.25 litre -> 14.2 kml
435.3 km @ 30.01 litre -> 14.5 kml
Petrol used: Shell 95
At half mark indicator, usually mileage is around 200 to 220 km. Method used:
1) Keep at max 2000 rpm
2) Aircon most of the time minimum at 24 degree and above.
Highway/city: 80/20
I think half mark fuel indicator = 45 litre tank / 2 is not correct one. If calculate this way, best is 220/22.5 litre is only 9.9 kml nia. Best is go and pump petrol and see how much is actually pumped is the most accurate.