The 2017 FIAT 500C is available as a 2-door, 4-seat convertible. Starting at $16,490, the 2017 FIAT 500C Pop is powered by a 1.4L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 31-mpg in the city and 38-mpg on the highway. The top of the line 2017FIAT500CAbarth , priced at $ 21,490 , is powered by a 1.4L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 28-mpg in the city and 33-mpg on the highway.