Buick Regal Sportback (2018) is 286 kg (631 lbs) lighter than Ford Flex (2018).
Ford Flex (2018) is 225 mm (8.86 inch) longer, 394 mm (15.51 inch) wider, 271 mm (10.67 inch) higher and has 753 liters (26.59 ft3) bigger cargo space than Buick Regal Sportback (2018).