Kia Optima Sportswagon (2015) is 56 mm (2.20 inch) higher, 400 kg (882 lbs) lighter and has 153 liters (5.40 ft3) bigger cargo space than Mercedes S-Class Coupe (2015).
Mercedes S-Class Coupe (2015) is 171 mm (6.73 inch) longer and 37 mm (1.46 inch) wider than Kia Optima Sportswagon (2015).