Audi S8 (2015) is 514 mm (20.24 inch) longer, 138 mm (5.43 inch) wider, 39 mm (1.54 inch) higher and has 10 liters (0.35 ft3) bigger cargo space than BMW 3 Series Touring (2015).
BMW 3 Series Touring (2015) is 1449 kg (3,194 lbs) lighter than Audi S8 (2015).
