BMW 4 Series (2020) is 960 kg (2,116 lbs) lighter than Rolls-Royce Phantom (2018).
Rolls-Royce Phantom (2018) is 1221 mm (48.07 inch) longer, 165 mm (6.50 inch) wider, 273 mm (10.75 inch) higher and has 98 liters (3.46 ft3) bigger cargo space than BMW 4 Series (2020).