My 2016 RAV4 Hybrid has a 1.6kWh battery pack. I have driven up to 43 mph in EV in this vehicle but.....at low amps. Once the vehicle exceeds 61-62 amps, it is going to kick the engine on. My 2005 Ford Escape Hybrid was good for about 51-52 amps before the ICE would start. This vehicle also has a button to lock it into EV mode as the CMax has. But, there are significant limitations like 25 mph and the amps mentioned above.