Audi RS 5 (2017) is 134 mm (5.28 inch) wider, 295 kg (650 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than BMW 6 Series Gran Coupe (2016).
BMW 6 Series Gran Coupe (2016) is 287 mm (11.30 inch) longer and 20 mm (0.79 inch) higher than Audi RS 5 (2017).
