Toyota Prius Owner's Manual page 64

1-1. Hybrid system
Eco savings record display
By setting the fuel consumption for comparison and the gasoline
price beforehand (P. 248), when the actual fuel consumption is
less than the fuel consumption for comparison, the difference is
calculated and the amount of money saved or spent is displayed
*
1
: The displayed amount is intended only as a guide and may differ from
the actual amount.
64
PRIUS_OM_OM47A19E_(EE)
Savings or consumption costs
for the previous 6 months
Press the "TRIP" button to switch
between the amount of money
saved and spent.
* 2
EV indicator
Eco Driving Indicator Light
Driving distance
month
: P. 242
* 2
1
*
.
* 2
for each