Audi A8 (2020) is 282 mm (11.10 inch) longer, 82 mm (3.23 inch) wider, 19 mm (0.75 inch) higher and has 15 liters (0.53 ft3) bigger cargo space than Opel Insignia Grand Sport (2017).
Opel Insignia Grand Sport (2017) is 968 kg (2,134 lbs) lighter than Audi A8 (2020).
