Audi S8 (2016) is 509 mm (20.04 inch) longer, 123 mm (4.84 inch) wider, 79 mm (3.11 inch) higher and has 24 liters (0.85 ft3) bigger cargo space than BMW 4 Series Gran Coupe (2018).
BMW 4 Series Gran Coupe (2018) is 1182 kg (2,606 lbs) lighter than Audi S8 (2016).
