BMW 8 Series (G16) (2019) is 622 mm (24.49 inch) longer, 136 mm (5.35 inch) wider and has 76 liters (2.68 ft3) bigger cargo space than Mazda 3 (Hatchback) (2014).
Mazda 3 (Hatchback) (2014) is 48 mm (1.89 inch) higher and 594 kg (1,310 lbs) lighter than BMW 8 Series (G16) (2019).