Although there are some similarities, these two are different in most aspects such as body structure, ground shadow size, fuel economy, and maximum occupancy. First of all, body structures are completely different. One is a Hatchback and the other a Wagon. The 2015 FIAT 500e is also significantly smaller than the 2016 Kia Soul EV. Also, the 2016 Soul EV gets 11 more miles on a gallon than the 2015 500e. And finally, there is a difference in the number of passengers; the Soul EV seats one more the 500e. Among similarities are the market segment and starting price.