 Primary reason for buying a Prius is fuel efficiency.  I have not been to a gas station yet, so I don't know the mpg.  But except for one trip of about 450 miles, all of my miles have been electric miles, and I estimate that I am getting about 4.6 miles/kWh or better.  That's equivalent to 155 mpg-e, much better than the EPA rating of 133.  Admittedly, my driving has been "gentle", and very little of it at highway speeds.  On the negative side, the touch-screen layout need improvement, presumably just a firmware upgrade (which Toyota should offer at no cost to owners).  One example: when the speed limit is displayed, the numbers are TINY.