Audi R8 Spyder (2020) is 32 mm (1.26 inch) longer and 147 mm (5.79 inch) wider than Mazda 6 Atenza (2020).
Mazda 6 Atenza (2020) is 327 mm (12.87 inch) higher, 189 kg (417 lbs) lighter and has 295 liters (10.42 ft3) bigger cargo space than Audi R8 Spyder (2020).