Ford Mustang (2018) is 370 mm (14.57 inch) longer and 119 mm (4.69 inch) wider than Mercedes B-Class (2020).
Mercedes B-Class (2020) is 166 mm (6.54 inch) higher, 187 kg (412 lbs) lighter and has 73 liters (2.58 ft3) bigger cargo space than Ford Mustang (2018).