I've been topping out the Eco gauge when toodling around 40mph and the ICE shuts off. I actually made it through about 4 miles through town, stoplights and all, with the ICE off entirely, which surprised me how far I could go given the rapid drain rate of the batteries. Outside of this 40mph sweet spot, the milage seems to vary more on occupant load rather than speed of the car. While that is to be expected, it surprises me the extent of the difference. Not once have I been able to get the TCH to accelerate from a stop without aid of the ICE when all my family of 4 is in the car. Brief acceleration (spinning tires, white knuckles, reble yell and icy stare from wife) doesn't seem to diminsh the effeciency as much as expected. Since I'm still in the break-in period, I won't do that again.

Please keep in mind I've had this thing for a week, so I don't yet have imperical data to support milage information and am basing all my info by use of the gauges.