unless you bought a car like mine (800cc Alto) or a Celerio or their equivalent in Hyundai (EON or I10), you won't be able to reach 16km/l. and this is a serious downgrade unless you have a 2nd car like I do na it depends sa situation kung ano ang dapat gamitin. pero kung primary car mo lang ito I suggest mag vios ka nalang.

ok na rin naman yung 10-12km/l ng vios in city driving. just get a maintained one. I suggested the vios since toyota owner ka na. alam mo na ang maintenance ng sasakyan ng toyota, and of course mas mura pa maintenance ng vios compared sa altis mo.