Audi R8 (2016) is 42 mm (1.65 inch) wider and 288 kg (635 lbs) lighter than BMW 8 Series (G14) (2018).
BMW 8 Series (G14) (2018) is 398 mm (15.67 inch) longer, 94 mm (3.70 inch) higher and has 124 liters (4.38 ft3) bigger cargo space than Audi R8 (2016).