BMW 4 Series (2013) is 975 kg (2,150 lbs) lighter than Rolls-Royce Phantom (2018).
Rolls-Royce Phantom (2018) is 1351 mm (53.19 inch) longer, 192 mm (7.56 inch) wider, 294 mm (11.57 inch) higher and has 93 liters (3.28 ft3) bigger cargo space than BMW 4 Series (2013).