Audi R8 Spyder (2020) is 147 mm (5.79 inch) wider than Mazda 3 (Sedan) (2017).
Mazda 3 (Sedan) (2017) is 235 mm (9.25 inch) longer, 205 mm (8.07 inch) higher, 262 kg (578 lbs) lighter and has 193 liters (6.82 ft3) bigger cargo space than Audi R8 Spyder (2020).