W.S. Heartiest congratulations on your purchase Dear brother. May it serve you well, and for years to come. IN SHA ALLAH. Amen.
The similar average I once experienced on Lahore-Islamabad M2 Motorway, and some fellows did not believe it. Following is the link to that post (it is mentioned above in this very thread):
I guess, ub yaqeen aa jana chaheye that if driven at 80-85 kmph speeds, it can give this much fuel efficiency.
(Still for follow-up comments to my original post in 2018; it hurts!)