BMW 8 Series (G15) (2018) is 893 mm (35.16 inch) longer, 208 mm (8.19 inch) wider and has 140 liters (4.94 ft3) bigger cargo space than Mazda 2 (2014).
Mazda 2 (2014) is 135 mm (5.31 inch) higher and 879 kg (1,938 lbs) lighter than BMW 8 Series (G15) (2018).