Audi A8 (2016) is 275 mm (10.83 inch) longer, 82 mm (3.23 inch) wider, 18 mm (0.71 inch) higher and has 15 liters (0.53 ft3) bigger cargo space than Opel Insignia Grand Sport (2017).
Opel Insignia Grand Sport (2017) is 652 kg (1,437 lbs) lighter than Audi A8 (2016).
