 At first when I bought this car I was super excited about being able to run in all electric mode.Sadly this mode is a downer.It states you will get up to 15 miles (recently rerated to 11 miles).I don't know of any day that i receive more then 7 miles.If you live in the Northeast you will be lucky to even be able to use the EV mode in the winter months.I switch to a Focus EV which is all EV and although it does have problems with the cold weather it at least still can run in EV mode.With the Prius as soon as you turn on your AC or Heater you switch to the standard hybrid mode.