Chevrolet Impala Limited (2016) is 326 mm (12.83 inch) longer, 982 kg (2,165 lbs) lighter and has 40 liters (1.41 ft3) bigger cargo space than Mercedes G-Class (2017).
Mercedes G-Class (2017) is 15 mm (0.59 inch) wider and 463 mm (18.23 inch) higher than Chevrolet Impala Limited (2016).