I have a trusted friend who really knows his car, being in the car business himself for decades. Very conscious of FC and always drive gently. He told me his Myvi 1.5 Auto can not be considered fuel economical compared to the many other cars he owned and he had owned many.

It is pretty meaningless to compare different people's Myvi unless the same driver using same driving style on the same road, same distance, same everything on different Myvi.