Audi R8 Spyder (2020) is 114 mm (4.49 inch) wider than BMW 3 Series Gran Turismo (2021).
BMW 3 Series Gran Turismo (2021) is 400 mm (15.75 inch) longer, 269 mm (10.59 inch) higher, 75 kg (165 lbs) lighter and has 295 liters (10.42 ft3) bigger cargo space than Audi R8 Spyder (2020).