Audi S6 (2015) is 125 mm (4.92 inch) longer, 35 mm (1.38 inch) higher, 425 kg (937 lbs) lighter and has 42 liters (1.48 ft3) bigger cargo space than Bentley Continental Supersports (2015).
Bentley Continental Supersports (2015) is 31 mm (1.22 inch) wider than Audi S6 (2015).