BMW 5 Series (2018) is 18 mm (0.71 inch) higher, 145 kg (320 lbs) lighter and has 39 liters (1.38 ft3) bigger cargo space than Maserati Quattroporte (2015).
Maserati Quattroporte (2015) is 320 mm (12.60 inch) longer and 81 mm (3.19 inch) wider than BMW 5 Series (2018).