Mercedes B-Class (2018) is 118 mm (4.65 inch) higher, 262 kg (578 lbs) lighter and has 186 liters (6.57 ft3) bigger cargo space than Opel Ampera (2014).
Opel Ampera (2014) is 105 mm (4.13 inch) longer and 1 mm (0.04 inch) wider than Mercedes B-Class (2018).
