Mercedes B-Class (2020) is 879 mm (34.61 inch) longer, 155 mm (6.10 inch) wider, 86 mm (3.39 inch) higher and has 154 liters (5.44 ft3) bigger cargo space than Volkswagen Up (2015).
Volkswagen Up (2015) is 745 kg (1,642 lbs) lighter than Mercedes B-Class (2020).