The 2013 Ford Fusion Hybrid comes with all-new lithium-ion batteries that save weight and generate more power than previous nickel-metal hydride batteries, while raising maximum speed under electric-only power from 47 mph to 62 mph.
 
Fusion Hybrid also features an all-new 2.0-liter Atkinson-cycle four-cylinder gasoline engine, significantly downsized from the previous 2.5-liter unit while maintaining performance standards. The powertrain is anticipated to deliver fuel economy of 47 mpg in city driving and 44 mpg on the highway. Fusion Hybrid models also are equipped with active noise control. This feature uses the audio system to mitigate extraneous road noise while enhancing powertrain sounds.

2013 Ford Fusion Hybrid Technical Specifications