Chevrolet Impala (2018) is 689 mm (27.13 inch) longer, 50 mm (1.97 inch) wider, 2 mm (0.08 inch) higher and has 112 liters (3.96 ft3) bigger cargo space than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 329 kg (725 lbs) lighter than Chevrolet Impala (2018).