BMW 3 Series (2015) is 15 mm (0.59 inch) higher, 385 kg (849 lbs) lighter and has 80 liters (2.83 ft3) bigger cargo space than Mercedes S-Class Coupe (2015).
Mercedes S-Class Coupe (2015) is 402 mm (15.83 inch) longer and 87 mm (3.43 inch) wider than BMW 3 Series (2015).