From what i've read, 12-15km/li pag normal, city driving. ibig sabihin nito, hindi mo hinahabol yung bawat kotse na nag-cut sayo. hehehe. Kaya siguro 15-20, pag nakapatay yung aircon and di mo pinapalagpas ng 2000rpm lagi. hehehe.
good thing about the jazz is in one of the instrument displays of the new jazz, meron dun some sort of bar graph which gives you your instataneous fuel consumption. so kung malakas tapak mo sa gas, baba yung bar graph, and pag economical driving ginagawa mo, mas tataas yung bar graph. having this, siguro mas magiging conscious yung driver kung masyadong malakas sa gas yung driving style nya.
this bar graph is located in the middle part of the instrument display, yung color blue.
you can see it more clearly in this youtube clip:
[ame="http://www.youtube.com/watch?v=K6CaX346Ih4"]YouTube - New Honda Jazz 0-185 km[/ame]