Fuel economy monitor not ready
 

Hii just put a deposit on a used Mazda 3 (2014, Maxx BM with i stop)



One of the reasons for going for this is fuel economy.



However, in my test drive, I wanted to check fuel consumption but couldn't find the average



When i go to "fuel economy monitor" in the apps it just shows istop not ready in the bottom and then later on shows ready. But can't seem to find any option for it to show fuel efficiency history for trips. How to get that?