BMW i8 (2019) is 1030 kg (2,271 lbs) lighter than Rolls-Royce Phantom Coupe (2015).
Rolls-Royce Phantom Coupe (2015) is 923 mm (36.34 inch) longer, 45 mm (1.77 inch) wider, 305 mm (12.01 inch) higher and has 160 liters (5.65 ft3) bigger cargo space than BMW i8 (2019).