BMW 8 Series (G14) (2020) is 374 mm (14.72 inch) longer, 107 mm (4.21 inch) wider and has 23 liters (0.81 ft3) bigger cargo space than Mazda 3 (Hatchback) (2020).
Mazda 3 (Hatchback) (2020) is 101 mm (3.98 inch) higher and 576 kg (1,270 lbs) lighter than BMW 8 Series (G14) (2020).