BMW 7 Series (2018) is 165 mm (6.50 inch) longer, 132 mm (5.20 inch) higher, 20 kg (44 lbs) lighter and has 253 liters (8.93 ft3) bigger cargo space than Maserati GranTurismo (2015).
Maserati GranTurismo (2015) is 13 mm (0.51 inch) wider than BMW 7 Series (2018).