I have a 2015 model vitz (spider shape). I have noticed the ECO indicator on dashboard but it has never lit up. It is always off. I drive with a light foot and car is well maintained with original oil/air filter and 0w-20 chevron oil. Its only driven 18k km. I get around 15 km/l average in karachi, less if theres traffic. Is it normal? Does this car actually have ECO mode?