BMW 5 Series (2017) is 3 mm (0.12 inch) longer, 82 mm (3.23 inch) higher, 60 kg (132 lbs) lighter and has 49 liters (1.73 ft3) bigger cargo space than Mercedes CLS-Class (2015).
Mercedes CLS-Class (2015) is 15 mm (0.59 inch) wider than BMW 5 Series (2017).