Mercedes B-Class (2014) is 255 mm (10.04 inch) longer, 6 mm (0.24 inch) wider, 5 mm (0.20 inch) higher and has 86 liters (3.04 ft3) bigger cargo space than Seat Arona (2017).
Seat Arona (2017) is 308 kg (679 lbs) lighter than Mercedes B-Class (2014).
