Chevrolet Impala (2014) is 304 kg (670 lbs) lighter than Ford Flex (2017).
Ford Flex (2017) is 12 mm (0.47 inch) longer, 402 mm (15.83 inch) wider, 230 mm (9.06 inch) higher and has 690 liters (24.37 ft3) bigger cargo space than Chevrolet Impala (2014).