I m using 2017-1.5 prosmatic for last 8 months, my car milage is kind of stuck at 12.2L/km to 12.3L/km with AC...oil change 2 times(@1000km and @5000km)...still no difference....car is driven by two persons in isb and pindi I guess this is the best milage we will get from 1.5prosnatic ..I am Ok with that..