BMW 8 Series (G15) (2019) is 20 mm (0.79 inch) wider than Mercedes CLS-Class (2017).
Mercedes CLS-Class (2017) is 97 mm (3.82 inch) longer, 76 mm (2.99 inch) higher, 49 kg (108 lbs) lighter and has 100 liters (3.53 ft3) bigger cargo space than BMW 8 Series (G15) (2019).