Car- City idtec.
Did a 800 km round trip to punjab recently.
While going speed was mostly in range of 100-130 with touching 160 just once for few seconds. Average- 20.7kmpl
While coming back speed was between 80-110 due to night conditions and encountered heavy bumper to bumper traffic while entering delhi in evening.
Overall- Around 21kmpl with 4 people on board and luggage.
In daily routine of drive to office it gives between 16-19kmpl depending on traffic conditions which usually is a nightmare in delhi.
P.S- All figures are with 100% AC on.
Also, forgot to mention Cruise Control was used 60%. It is an awesome feature but driving manually gives better FE IMO