BMW 8 Series (G15) (2018) is 104 kg (229 lbs) lighter than Ford Flex (2015).
Ford Flex (2015) is 282 mm (11.10 inch) longer, 354 mm (13.94 inch) wider, 385 mm (15.16 inch) higher and has 803 liters (28.36 ft3) bigger cargo space than BMW 8 Series (G15) (2018).