My wife was saying that her gauge seems to reset every time she turns the car off and it starts a new trip with every new trip. Is this normal? Is there an way to have it show efficiency per tank or longer until a manual reset? I'm sure there's a way to do it but I never drive the OS so I haven't played with it much. Thanks!

 

It resets after 4 hours of being stationary. If you have the MMCS you can change it in the owner options/settings through the navi, but if not then the options will have to be changed through the ETACS ECU. Your dealer can do this, or they sell cables for about $80-$100 and you could do it yourself.

 

Ok thanks!