Audi S6 (2017) is 18 mm (0.71 inch) longer and 18 mm (0.71 inch) wider than Opel Insignia Sports Tourer (2015).
Opel Insignia Sports Tourer (2015) is 73 mm (2.87 inch) higher, 295 kg (650 lbs) lighter and has 161 liters (5.69 ft3) bigger cargo space than Audi S6 (2017).
