Two Convertibles with some similarities, but otherwise different in most aspects such as the starting price, horsepower, fuel economy, ground shadow size, and height. First of all, the 2016 FIAT 500 Convertible is priced $12,670 lower compared to the base MSRP of the 2016 Buick Cascada. Also, the 2016 Cascada has a more powerful engine and gets 11 mpg less than the 2016 500 Convertible. And finally, the Cascada is significantly larger, but the roofline is slightly shorter than that of the 500 Convertible. Among similarities are the body structure and maximum occupancy.