BMW 4 Series (2013) is 1109 kg (2,445 lbs) lighter than Rolls-Royce Phantom (2014).
Rolls-Royce Phantom (2014) is 1453 mm (57.20 inch) longer, 164 mm (6.46 inch) wider, 279 mm (10.98 inch) higher and has 14 liters (0.49 ft3) bigger cargo space than BMW 4 Series (2013).