Mercedes B-Class (2020) is 152 mm (5.98 inch) longer and 119 mm (4.69 inch) higher than Volkswagen Golf GTI (2019).
Volkswagen Golf GTI (2019) is 2 mm (0.08 inch) wider, 250 kg (551 lbs) lighter and has 25 liters (0.88 ft3) bigger cargo space than Mercedes B-Class (2020).
