I will go to office on Monday. lets see how it behaves, but touching 25 KM/L is a normal when the road is smooth and my rpms are approx 1600-1800 with minimum brakes and constant speed. Moreover as a driving best practice, it is important to see the traffic far, if u can see there is a pile up approx 1 km from your location, then u can reduce the gear and move ur vehicle to lower speed in order to reduce the immediate brake press. This way acceleration and deceleration would be smooth and thus less fuel burning. Always maintain constant speed, this way the fuel consumption is reduced and average increases.