 I was looking at several electric and plug in vehicles to replace my '04 Prius (which lasted for 293,327 trouble free miles).  I test drove many new models but because of my previous car's remarkable reliability and efficiency, I knew the only thing that could replace my Prius, would be another Prius.  I found myself searching for my next car at a time after Toyota had discontinued the Prius Plug-in but before it had rolled out its new Prius Prime.  I was getting ready to purchase a new 2016 Prius Eco when I came across an off lease company that had several used Prius Plug-ins for sale.  They were having trouble moving these vehicles (partly because they had no clue what this version of the Prius did).  Using this ignorance to my advantage, I purchased a used 2013 Prius Plug-in for a very good deal.  I quickly found out that these are amazing vehicles.  I get the same impeccable reliability and efficiency that my other Prius delivered plus the added capability of having an electric vehicle for all of my in town trips.  This plug-in version has a modified suspension system from the standard Prius.  I found that it handles well and feels confident and firmly planted on the road.  The seats are comfortable for long road trips and the spacious cargo area is exactly the same size as in the standard Prius despite the plug-in having a larger battery!  These cars are designed for efficiency whether you are using it as an EV or a hybrid.  In electric only mode, I've found that my Prius Plug-in is more efficient than many other electric only cars.  Its battery size and weight does not seem to prohibit the efficiency of its electric only mode since it does not have to carry the excessive weight of a large battery like the ones found in a Tesla or Leaf.  Not having to carry around that "dead weight" is also why I am getting 50+mpg using just the gas engine in hybrid mode.  Most plug in vehicles seem to sacrifice the efficiency of their hybrid mode in an effort to carry a larger battery (example, the Chevy Volt with only 37-42 mpg).  I've driven about 22,363 miles since I purchased my car a year and a half ago.  I am averaging 4.68 miles per kilowatt-hour after travelling 14,122 miles in Electric mode only (compare this number to other electric only cars today and you may be impressed).  I am averaging 51.83 mpg after traveling 8241 miles in hybrid mode only (this reflects mostly highway mileage).  So go ahead and try to snag one of these gems from an off lease or any used car dealer.  You will be happy you did!