BMW i8 (2019) is 60 mm (2.36 inch) wider and 215 kg (474 lbs) lighter than Mercedes CLS-Class (2020).
Mercedes CLS-Class (2020) is 251 mm (9.88 inch) longer, 124 mm (4.88 inch) higher and has 366 liters (12.93 ft3) bigger cargo space than BMW i8 (2019).