BMW 8 Series (G15) (2019) is 825 kg (1,819 lbs) lighter than Rolls-Royce Phantom (2017).
Rolls-Royce Phantom (2017) is 999 mm (39.33 inch) longer, 88 mm (3.46 inch) wider, 297 mm (11.69 inch) higher and has 33 liters (1.17 ft3) bigger cargo space than BMW 8 Series (G15) (2019).