Alza Fuel Consumption according to Toyota

According to Toyota Passo Sette promotional video, the car’s fuel consumption is 15.6km/l. This is certainly the figure to beat. My previous 2006 Honda City Vtec was only performing at 14.7km/l and this is already way better than all my peers who have been driving at around 13.xkm/l for the same car or iDSI version. From the My Alza Forum, I find that some people can actually hit 15km/l. Not sure if they are driving the auto version or manual version, definitely, what Toyota claim for Sette is not something that is not achievable. Lets see the following months how my Alza performs.
Kew
[...] One month in after collecting the car, I have traveled more than 3500km. I have used Shell VPower 97 during the first few pump and then changed to Caltex 95 for 2 pumps and Shell 95 after that till today. The average fuel consumption firmly stands at 12.3km/l, still far from Toyota 15.6km/l claim. [...]
[...] from the day I pick up the car, which performs at only 10.9km/l. Though it is still far from what Toyota claim at 15.6km/l, but it is close to my previous Honda City that performs at 14.7km/l. As the Alza Fuel [...]