Toyota Prius c 2014 Owner's Manual page 198

2-2. Instrument cluster
The cost of consumed fuel per mile/kilometer (your car)
The more fuel efficient your driving is, the further left the vehicle
mark moves.
■
"ECO Savings Record"
196
If the fuel consumption compari-
son is input in "ECO Savings",
the savings history will be dis-
played. If the fuel consumption
comparison is not input, fuel cost
history will be displayed.
Fuel costs for the current month,
the last 3 months and the same
month last year are displayed,
enabling a comparison to be
made.
If the dollar amount exceeds $ 100,
the numerical value will be dis-
played on the graph.