BMW 8 Series (G16) (2020) is 33 mm (1.30 inch) wider and 236 kg (520 lbs) lighter than Mercedes S-Class (2014).
Mercedes S-Class (2014) is 163 mm (6.42 inch) longer, 83 mm (3.27 inch) higher and has 60 liters (2.12 ft3) bigger cargo space than BMW 8 Series (G16) (2020).