BMW 8 Series (G14) (2020) is 254 mm (10.00 inch) longer and 106 mm (4.17 inch) wider than Mazda 3 (Sedan) (2015).
Mazda 3 (Sedan) (2015) is 116 mm (4.57 inch) higher, 618 kg (1,362 lbs) lighter and has 69 liters (2.44 ft3) bigger cargo space than BMW 8 Series (G14) (2020).