Audi R8 Spyder (2020) is 147 mm (5.79 inch) wider than Mazda 3 (Sedan) (2014).
Mazda 3 (Sedan) (2014) is 153 mm (6.02 inch) longer, 215 mm (8.46 inch) higher, 355 kg (783 lbs) lighter and has 193 liters (6.82 ft3) bigger cargo space than Audi R8 Spyder (2020).