BMW 8 Series (G15) (2018) is 568 mm (22.36 inch) longer and 137 mm (5.39 inch) wider than Mazda CX-3 (2014).
Mazda CX-3 (2014) is 194 mm (7.64 inch) higher, 624 kg (1,376 lbs) lighter and has 84 liters (2.97 ft3) bigger cargo space than BMW 8 Series (G15) (2018).