These vehicles are almost with new engines... let the engine clock more KMs say 8K - 10K in sha Allah you will start getting more KMs per litre. Cant shed more light on it as I had purchased it with 28800 KMs on the odo n alhamdolillah from the day first, irs giving me an awesome mileage and with a light foot , without AC , using city bypass road and motorway (100 speed on Motorway) , with everything tuned it gives me 21-22 KMs per litre. Dont loose hope and clock in some more KMs, dont forget to follow the manufacturer's guidelines.