i have euro 2 2012, i have driven it up to 25k km..
it is giving me 20km/liter average with in city..
i also use ac with it in on off way..
i only use caltax and total petrol at selected stations..
tip is never filled ur tank more then 10 liter in one filling..
less u feed the car more u get the average..
more petrol increase pressure on injectors then, its consumption increases..
use havoline formula engine oil it suits the car..