In this tutorial, we learn how to choose which driving mode to use in the 2010 Prius. The Prius offers four drive modes: normal, eco, power, and ev mode. To activate the mode, press the appropriate button the center console and the light will appear in the center console. Now, you can press it again to deactivate it if you no longer want it on. The Prius has a driving range of 1/2 mile and can operate at 25 mph using light throttle. If the battery needs charging or the speed exceeds 25 mph the gasoline engine will start automatically. All of these options will help you drive better and save money on gas!