BMW 5 Series Touring (2020) is 613 mm (24.13 inch) longer, 109 mm (4.29 inch) wider and has 84 liters (2.97 ft3) bigger cargo space than Mercedes B-Class (2014).
Mercedes B-Class (2014) is 165 mm (6.50 inch) higher and 506 kg (1,116 lbs) lighter than BMW 5 Series Touring (2020).