Kia Optima (2017) is 436 mm (17.17 inch) longer, 64 mm (2.52 inch) wider, 65 kg (143 lbs) lighter and has 105 liters (3.71 ft3) bigger cargo space than Mercedes B-Class (2020).
Mercedes B-Class (2020) is 92 mm (3.62 inch) higher than Kia Optima (2017).
