BMW 5 Series (2014) is 420 mm (16.54 inch) longer, 104 mm (4.09 inch) wider, 105 mm (4.13 inch) higher and has 20 liters (0.71 ft3) bigger cargo space than Mazda 3 (Sedan) (2014).
Mazda 3 (Sedan) (2014) is 500 kg (1,102 lbs) lighter than BMW 5 Series (2014).