BMW 4 Series (2014) is 1064 kg (2,346 lbs) lighter than Rolls-Royce Phantom (2017).
Rolls-Royce Phantom (2017) is 1204 mm (47.40 inch) longer, 165 mm (6.50 inch) wider, 276 mm (10.87 inch) higher and has 8 liters (0.28 ft3) bigger cargo space than BMW 4 Series (2014).