Chevrolet Impala (2015) is 1379 mm (54.29 inch) longer, 170 mm (6.69 inch) wider, 107 mm (4.21 inch) higher and has 292 liters (10.31 ft3) bigger cargo space than MINI Roadster (2014).
MINI Roadster (2014) is 479 kg (1,056 lbs) lighter than Chevrolet Impala (2015).