BMW X6 (2016) is 64 mm (2.52 inch) higher, 549 kg (1,210 lbs) lighter and has 127 liters (4.48 ft3) bigger cargo space than Rolls-Royce Phantom (2017).
Rolls-Royce Phantom (2017) is 933 mm (36.73 inch) longer and 1 mm (0.04 inch) wider than BMW X6 (2016).