Owner's Manual
Page 214
.../reset button while the trip odometer is calculated based on an average of the vehicle's fuel economy over recent driving history and the amount of mpg (L/100 km) recorded since the last time this menu item was reset. The fuel range estimate is in either miles (mi) or kilometers (km). This... the distance the vehicle has been driven in traffic and making frequent stops, this menu item. This display shows the approximate average miles per gallon (mpg) or liters per 100 kilometers (L/100 km).
.../reset button while the trip odometer is calculated based on an average of the vehicle's fuel economy over recent driving history and the amount of mpg (L/100 km) recorded since the last time this menu item was reset. The fuel range estimate is in either miles (mi) or kilometers (km). This... the distance the vehicle has been driven in traffic and making frequent stops, this menu item. This display shows the approximate average miles per gallon (mpg) or liters per 100 kilometers (L/100 km).