Mercedes M-Class (2015) is 150 mm (5.91 inch) higher, 499 kg (1,100 lbs) lighter and has 237 liters (8.37 ft3) bigger cargo space than Rolls-Royce Phantom (2017).
Rolls-Royce Phantom (2017) is 1038 mm (40.87 inch) longer and 64 mm (2.52 inch) wider than Mercedes M-Class (2015).