The Ford Fusion Energi (plug-in hybrid) took the test, and the results are in: The Environmental Protection Agency has officially been rated at 108 MPGe highway, 92 MPGe city, and 100 MPGe combined. That's good enough to top both the Chevy Volt and the Toyota Prius. The car runs on a Atkinson-cycle 2.0-liter four-cylinder that could run 20 miles in all-electric mode on a 7.6-kWh lithium ion battery. 

Related: The 2013 Ford Fusion Plug-In Hybrid Priced at $39,495

Related: 15-Minute Test Drive: The 2013 Ford Fusion

[via Left Lane News]