Chevrolet Impala (2018) is 720 mm (28.35 inch) longer, 68 mm (2.68 inch) wider and has 47 liters (1.66 ft3) bigger cargo space than Mercedes B-Class (2017).
Mercedes B-Class (2017) is 61 mm (2.40 inch) higher and 329 kg (725 lbs) lighter than Chevrolet Impala (2018).