Two Sedans with some similarities, but otherwise different in most aspects such as the model year, horsepower, fuel economy, market segment, and ground shadow size. First of all, the 2016 Impala has a more powerful engine and gets 20 mpg less than the 2013 Fusion Hybrid. Also, the Impala is slightly larger than the Fusion Hybrid. Among similarities are the body structure, starting price, height, and maximum occupancy.