After a lapse of 3 years the car is giving me 13.68 Km/Litre in city (patrol) with AC and 14.27 without AC.
On CNG, it has 40 kg capacity cylinder it the pressure is around 212 Psi while filling, the car gives 117 km/cylinder in city. if pressure is below 200 psi, it varies from 90~94 km/cyl.