As with the C-Max and Fusion hybrid, which are both rated at 47 mpg combined, the new Ford Fusion Energi plug-in hybrid attains the same 100 MPGe combined rating as its five-door cousin, the C-Max Energi. This officially gives both the C-Max and Fusion Energi models a higher MPGe rating than two of its plug-in rivals, the Chevrolet Volt and Toyota Prius Plug-in. However, the non-plugin versions of the C-Max and Fusion hybrid have both been reported to fall well short of their claimed economy, so real-world results remain to be seen.
Ford is touting the Fusion Energi as America's "most fuel efficient sedan." For reference, the Prius plug-in hybrid is rated at 95 MPGe combined, and the Chevrolet Volt is rated at 98 MPGe. Honda has announced a plug-in hybrid version of the new Accord sedan, but official fuel economy figures have not yet been released for the model.
As much variation as there is with "regular" hybrids for fuel economy, there are even more variables in play with plug-in models, potentially bringing up the fuel economy controversy all over again with the Energi. Regardless of whether Ford's hybrid models attain their officially-rated figures, consumers seem to be responding favorably, with 8030 C-Max hybrids being sold in October and November, the first two full months of availability for the model, making it the fastest-selling hybrid at launch.