More efficiency. More Potential. Every last detail of Prius Prime has been optimized to help make it the most advanced - and efficient - Prius yet. Cutting-edge, lightweight materials, proven hybrid technology and an optimized Plug-in Hybrid Vehicle (PHV) system all work together to help Prius Prime reach an impressive, class-leading EPA-estimated 133 MPGe. Prime also continues to help you challenge what's possible by reaching and EPA-estimated total driving range of 640 miles. Imagine all the places you'll go with Toyota's legendary hybrid technology that invites you to do even more.