@stonedsand:
My overall petrol average is a bit bellow 11 km/l. While considering my trips on the motorway (3 to Burhan, 1 to Behra) is around 14 km/l with A/C.
Obviously motorway trips also include some post motorway journey which spoil the average and the fun, e.g. I use M1 till Burhan to actually go to Topi (Terbela), and used M2 till Behra to reach Khushab. I have another trip late this month on M2, I hope to dodge the monsoons