Mercedes B-Class (2020) is 281 mm (11.06 inch) longer, 16 mm (0.63 inch) wider, 10 mm (0.39 inch) higher and has 5 liters (0.18 ft3) bigger cargo space than Seat Arona (2017).
Seat Arona (2017) is 538 kg (1,186 lbs) lighter than Mercedes B-Class (2020).
