Performance has been a hallmark of the "letter series" Chrysler 300 models since 1955, and the all-new 2011 Chrysler 300C builds upon that legacy with the legendary 5.7-liter HEMI® V-8 engine delivering 363 horsepower, 0-60 mph performance in less than 6 seconds and up to 25 highway mpg. In addition, the engine's innovative Fuel Saver Technology allows for seamless transition between smooth, high-fuel-economy four-cylinder mode when less power is needed and V-8 mode when more power is in demand. When running in four-cylinder fuel saver mode, the engine delivers up to 20 percent improved fuel efficiency.