Two Sedans with some similarities, but otherwise different in most aspects such as the fuel economy, model year, market segment, horsepower, and ground shadow size. First of all, the 2016 IS 200t has bigger and thirstier engine; the 2014 Fusion Energi gets 12 more mpg. Also, the body structure of Fusion Energi is slightly larger than that of the IS 200t. Among similarities are the body structure, starting price, height, and maximum occupancy.