Ferrari FF (2014) is 514 mm (20.24 inch) longer and 167 mm (6.57 inch) wider than Mercedes B-Class (2017).
Mercedes B-Class (2017) is 178 mm (7.01 inch) higher, 485 kg (1,069 lbs) lighter and has 36 liters (1.27 ft3) bigger cargo space than Ferrari FF (2014).