BMW i8 (2017) is 1193 kg (2,630 lbs) lighter than Rolls-Royce Cullinan (2019).
Rolls-Royce Cullinan (2019) is 652 mm (25.67 inch) longer, 58 mm (2.28 inch) wider, 536 mm (21.10 inch) higher and has 406 liters (14.34 ft3) bigger cargo space than BMW i8 (2017).