Ford Flex 2014 Automatic Gasoline mileage: 300 KM or more Used Ford Flex SEL 2014 for sale Gasoline Mileage: 450. Ford Flex for sale, second owner. Maintenance done on control arms, shock absorbers, and consumables. Engine and transmission are guaranteed. Needs steering rack. New inspection and registration. Mileage: 450. Body is original, free from paint and bodywork. Minor scratches present. Location: Al-Majma'ah.