its perfectly alright and realistic. when i travel on GT road from Pindi to Lahore, with 100 AC on, i get 19-20 km/liter in my 2012 City
bro, i m a hypermiler generally, so i totally agree what u r trying to say here. once i went from Pindi to murree and back and the OVERALL average i got was over 29 km/liter my only point is that if 120 has to be maintained throughout, there is no way one can keep a light foot on the accelerator....it HAS to be a light to medium foot, and the average (with 100 AC on) is never more than 17 km/liter in my case (others might be doing better). On GT road, @100 km/hr, 19-20 km/liter i get with 100 percent AC on