BMW i8 (2017) is 880 kg (1,940 lbs) lighter than Rolls-Royce Wraith (2015).
Rolls-Royce Wraith (2015) is 592 mm (23.31 inch) longer, 5 mm (0.20 inch) wider, 214 mm (8.43 inch) higher and has 316 liters (11.16 ft3) bigger cargo space than BMW i8 (2017).