Audi A8 (2018) is 259 mm (10.20 inch) longer and 89 mm (3.50 inch) wider than Opel Insignia Sports Tourer (2015).
Opel Insignia Sports Tourer (2015) is 40 mm (1.57 inch) higher, 417 kg (919 lbs) lighter and has 55 liters (1.94 ft3) bigger cargo space than Audi A8 (2018).
