I soon began to miss the gauges in the FFH. The Energy Monitor screen is the only tool the Gen II Prius has for monitoring what's happening in the drive train. In the Prius it was difficult to predict when the switch from EV mode to "engine on" would From L to R: Battery engine power, Battery charge indicator, Speedometer, Fuel gauge, Instantaneous MPGoccur because there is no gauge for that, nor is there an indicator for when you are in EV mode. The FFH has a rich set of gauges. Depending on which ones you enable, you can see engine RPM, power draw from the battery and the engine, battery state of charge, instantaneous MPG, when the car is in EV mode, and how much acceleration you can apply in EV mode before the engine turns on.