Chevrolet Impala (2017) is 13 mm (0.51 inch) longer and 476 kg (1,049 lbs) lighter than GMC Acadia (2018).
GMC Acadia (2018) is 150 mm (5.91 inch) wider, 348 mm (13.70 inch) higher and has 647 liters (22.85 ft3) bigger cargo space than Chevrolet Impala (2017).
