BMW 1 Series (2014) is 450 kg (992 lbs) lighter than Mercedes S-Class Coupe (2017).
Mercedes S-Class Coupe (2017) is 666 mm (26.22 inch) longer, 149 mm (5.87 inch) wider, 3 mm (0.12 inch) higher and has 40 liters (1.41 ft3) bigger cargo space than BMW 1 Series (2014).