The 2015 Ford Flex is available as a 4-door, 7-seat sport utility. Starting at $29,100, the 2015 Ford Flex SE FWD is powered by a 3.5L, 6-cylinder engine mated to anautomatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway. The top of the line 2015 Ford Flex Limited w/EcoBoost AWD, priced at $42,400, is powered by a 3.5L, 6-cylinder engine mated to anautomatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.