Aston Martin Rapide (2015) is 330 mm (12.99 inch) longer, 66 mm (2.60 inch) higher and has 242 liters (8.55 ft3) bigger cargo space than BMW i8 (2017).
BMW i8 (2017) is 14 mm (0.55 inch) wider and 430 kg (948 lbs) lighter than Aston Martin Rapide (2015).