I have a M/T Picanto and my average city consumption (aircon always on, no attempts at being frugal; i.e., accelerate to the max whenever needed) is a consistent 12 km/L. Fuel economy on the highway is a totally different matter however. Last month I did a 216 km run (Tagaytay -> Taal -> Tagaytay -> Taal -> Las Piñas) on hilly terrain with the aircon on, again without any attempts at being frugal, and I managed 19.5 km/L. Just yesterday I traveled from Alabang to Tagaytay and back with 3 people in the car, with the aircon on, and got 20.5 km/L. Spent less than P150 on gas for that round trip. 
