Chevrolet Impala (2015) is 457 mm (17.99 inch) longer, 376 kg (829 lbs) lighter and has 183 liters (6.46 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 36 mm (1.42 inch) wider and 163 mm (6.42 inch) higher than Chevrolet Impala (2015).