BMW 4 Series (2020) is 545 kg (1,202 lbs) lighter than Mercedes S-Class (2017).
Mercedes S-Class (2017) is 477 mm (18.78 inch) longer, 47 mm (1.85 inch) wider, 107 mm (4.21 inch) higher and has 60 liters (2.12 ft3) bigger cargo space than BMW 4 Series (2020).