BMW 1 Series (2014) is 224 kg (494 lbs) lighter than Chevrolet Impala (2017).
Chevrolet Impala (2017) is 753 mm (29.65 inch) longer, 106 mm (4.17 inch) wider, 85 mm (3.35 inch) higher and has 173 liters (6.11 ft3) bigger cargo space than BMW 1 Series (2014).