Mercedes M-Class (2015) is 239 mm (9.41 inch) higher, 340 kg (750 lbs) lighter and has 200 liters (7.06 ft3) bigger cargo space than Rolls-Royce Ghost (2018).
Rolls-Royce Ghost (2018) is 596 mm (23.46 inch) longer and 22 mm (0.87 inch) wider than Mercedes M-Class (2015).