Two Sedans with more similarities, such as the body structure, market segment, height, and maximum occupancy, than differences, like the starting price, horsepower, fuel economy, and ground shadow size. First of all, the 2015 Ford Fusion is priced $4,595 lower compared to the base MSRP of the 2016 Chevrolet Impala. Also, the 2016 Impala has a more powerful engine than the 2015 Fusion, and it gets 3.5 fewer miles on a gallon of fuel. And finally, the Impala has a slightly larger body than the Fusion. Among similarities are the body structure, market segment, height, and maximum occupancy.