Opel Insignia Grand Sport (2017) is 33 mm (1.30 inch) higher and 449 kg (990 lbs) lighter than Porsche Panamera (2020).
Porsche Panamera (2020) is 153 mm (6.02 inch) longer, 75 mm (2.95 inch) wider and has 8 liters (0.28 ft3) bigger cargo space than Opel Insignia Grand Sport (2017).
