BMW 5 Series Touring (2017) is 56 mm (2.20 inch) longer, 18 mm (0.71 inch) wider, 140 mm (5.51 inch) higher and has 40 liters (1.41 ft3) bigger cargo space than Mercedes CLS-Class (2018).
Mercedes CLS-Class (2018) is 240 kg (529 lbs) lighter than BMW 5 Series Touring (2017).