not sure if this was asked before but i need help on my Vios 1.5 A/T. car is bought feb 2007, properly maintained - i'm assuming it is since i follow the 1k, 5k, 10k and just recently 15k PMS. it's more than 3 years but mileage is still low ~16k

anyway, i computed for the fuel consumption and to my surprise, parang ang takaw sa gas.. my last computation is 8.9km/l.. this is for pure city driving, pasig-makati.. any tips or advise on what to do/check.. i know driving habit comes to play here but as far as i know , i have good driving habits naman.. before, it used to be 12-14km/l but now, it's way, way down, though may kasamang highway driving noon..

thanks in advance..