BMW X4 (2017) is 58 mm (2.28 inch) higher, 909 kg (2,004 lbs) lighter and has 189 liters (6.67 ft3) bigger cargo space than Rolls-Royce Phantom Coupe (2014).
Rolls-Royce Phantom Coupe (2014) is 941 mm (37.05 inch) longer and 106 mm (4.17 inch) wider than BMW X4 (2017).