BMW 7 Series (2020) is 540 mm (21.26 inch) longer, 106 mm (4.17 inch) wider, 12 mm (0.47 inch) higher and has 96 liters (3.39 ft3) bigger cargo space than Mazda 3 (Sedan) (2016).
Mazda 3 (Sedan) (2016) is 700 kg (1,543 lbs) lighter than BMW 7 Series (2020).