The 2018 Ford Flex is available as a 4-door, 7-seat sport utility. Starting at $30,285, the 2018 Ford Flex SE FWD is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2018 Ford Flex Limited w/EcoBoost AWD, priced at $43,295, is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 21-mpg on the highway.