The 2018 Toyota Prius is in its fourth generation of the iconic hybrid line that's best known for pioneering mass-market electric motoring. The powertrain combines a 1.8-liter Atkinson cycle four-cylinder engine with an electric motor for a total of 121 horsepower. A continuously variable automatic transmission sends power to the front wheels. The Prius comes in seven trims (One, Two, Two Eco, Three, Three Touring, Four, Four Touring). All trims boast key safety features such as pre-collision warning, lane departure alert, and adaptive cruise control, thanks to Toyota's Safety Sense suite. Toyota Entune infotainment system is standard, with a 6.1-inch touchscreen, six speakers, advanced voice recognition, a USB port, Bluetooth, and Siri Eyes Free. Apple CarPlay and Android Auto, however, are not supported.