I have been a V2 owner for exactly a year now and recently, I travelled from Sargodha to Islamabad. This is the first time I calculated the fuel consumption on Motorway only; got it filled from just outside Sargodha City and got ot refilled again on Chakri Services. It gave me 19.3km/l at a speed of 90km/h and 2,500rpm without AC. It made me very happy. 

Earlier, I used to get 18km/l at the same speed but that included a bit of city driving (just to get out of that city) and all the way till Murree (via Murree Expressway).
In the city, though, it varies from 12.5 to 15km/l depending on traffic and style of drive.
Other than fuel consumption, especially upgrading from Mehran, this car is a huge leap! The power, the comfort and the space is just brilliant.