Chevrolet Impala (2017) is 258 mm (10.16 inch) longer and 461 kg (1,016 lbs) lighter than Porsche Cayenne (2014).
Porsche Cayenne (2014) is 100 mm (3.94 inch) wider, 192 mm (7.56 inch) higher and has 137 liters (4.84 ft3) bigger cargo space than Chevrolet Impala (2017).
