Chevrolet Impala Limited (2015) is 827 mm (32.56 inch) longer, 36 mm (1.42 inch) wider, 32 mm (1.26 inch) higher and has 147 liters (5.19 ft3) bigger cargo space than Seat Leon (2014).
Seat Leon (2014) is 404 kg (891 lbs) lighter than Chevrolet Impala Limited (2015).