Alfa Romeo 4C (2017) is 7 mm (0.28 inch) wider and 427 kg (941 lbs) lighter than Kia Optima (2015).
Kia Optima (2015) is 867 mm (34.13 inch) longer, 281 mm (11.06 inch) higher and has 400 liters (14.13 ft3) bigger cargo space than Alfa Romeo 4C (2017).
