BMW 4 Series (2020) is 550 kg (1,213 lbs) lighter than Mercedes M-Class (2015).
Mercedes M-Class (2015) is 36 mm (1.42 inch) longer, 74 mm (2.91 inch) wider, 405 mm (15.94 inch) higher and has 250 liters (8.83 ft3) bigger cargo space than BMW 4 Series (2020).