Ford Flex (2016) is 228 mm (8.98 inch) longer, 393 mm (15.47 inch) wider, 271 mm (10.67 inch) higher and has 733 liters (25.89 ft3) bigger cargo space than Opel Insignia Grand Sport (2020).
Opel Insignia Grand Sport (2020) is 663 kg (1,462 lbs) lighter than Ford Flex (2016).