BMW 5 Series (2018) is 15 mm (0.59 inch) wider, 8 mm (0.31 inch) higher and has 42 liters (1.48 ft3) bigger cargo space than Chevrolet Impala Limited (2015).
Chevrolet Impala Limited (2015) is 147 mm (5.79 inch) longer and 102 kg (225 lbs) lighter than BMW 5 Series (2018).