got my 2014 Mazda 5 in Oct, putting around 1,500 KM in the past 2 months. according to the owners manual the car should have a 60L (15.9 gal) tank. the first 2 time I fill up as soon as when the low fuel indicator is on and putting appox 50L (13.2 gal) both times. doesn't sound right to me for a...