Two Hatchbacks with some similarities, but otherwise different in most aspects such as the horsepower, ground shadow size, starting price, fuel economy, and maximum occupancy. First of all, the 2015 smart fortwo Hatchback is priced $3,725 lower compared to the base MSRP of the 2016 FIAT 500 Hatchback. Also, the 2016 500 Hatchback has bigger and thirstier engine; the 2015 fortwo Hatchback gets 4 more mpg. In addition, the body structure of 500 Hatchback is significantly larger than that of the fortwo Hatchback. And finally, there is a difference in the number of passengers; the FIAT 500 Hatchback seats two more the smart fortwo Hatchback. Among similarities are the body structure and height.