It’s official: the 2013 Ford C-Max Energi is the most efficient plug-in hybrid to date, achieving a cool 100 miles per gallon equivalent combined in official EPA fuel economy tests. 

Announced last night by Ford, the $33,745 2013 Ford C-Max Energi has beaten both the 95 MPGe rating of the 2012 Toyota Prius Plug-in Hybrid, and the 98 MPGe rating of the 2013 Chevrolet Volt. 

In achieving a rating of 100MPGe combined, the Ford C-Max Energi also becomes the first plug-in hybrid to be placed by the EPA in a special listing of cars which exceed 100 MPGe. 

Previously, that list contained only pure electric cars, like the 2012 2013 Honda Fit EV, 2012 Mitsubishi i, and 2013 Ford Focus Electric.

Due to go on sale early next year, Ford says the EPA also gave the C-Max Energi a 108 MPGe rating in the city, just 2 MPGe less than the city rating for its 2013 Focus Electric. 

At the time of writing, the EPA has yet to publish the official results on its website.

The C-Max Energi’s non plug-in sibling, the 2013 C-Max Hybrid, is rated by the EPA with a 47 mpg all-round figure


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