BMW i8 (2016) is 1740 kg (3,836 lbs) lighter than Rolls-Royce Cullinan (2020).
Rolls-Royce Cullinan (2020) is 652 mm (25.67 inch) longer, 217 mm (8.54 inch) wider, 536 mm (21.10 inch) higher and has 406 liters (14.34 ft3) bigger cargo space than BMW i8 (2016).