Mercedes M-Class (2015) is 147 mm (5.79 inch) higher, 544 kg (1,199 lbs) lighter and has 231 liters (8.16 ft3) bigger cargo space than Rolls-Royce Phantom (2014).
Rolls-Royce Phantom (2014) is 1287 mm (50.67 inch) longer and 63 mm (2.48 inch) wider than Mercedes M-Class (2015).