Chevrolet Impala (2018) is 493 mm (19.41 inch) longer, 53 mm (2.09 inch) wider, 66 mm (2.60 inch) higher and has 125 liters (4.41 ft3) bigger cargo space than Hyundai Elantra (2016).
Hyundai Elantra (2016) is 428 kg (944 lbs) lighter than Chevrolet Impala (2018).