Maserati Quattroporte (2017) is 18 mm (0.71 inch) longer, 49 mm (1.93 inch) wider, 285 kg (628 lbs) lighter and has 30 liters (1.06 ft3) bigger cargo space than Mercedes S-Class (2015).
Mercedes S-Class (2015) is 9 mm (0.35 inch) higher than Maserati Quattroporte (2017).