Kia Optima Sportswagon (2015) is 6 mm (0.24 inch) wider and 361 kg (796 lbs) lighter than Mercedes E-Class (Estate) (2014).
Mercedes E-Class (Estate) (2014) is 40 mm (1.57 inch) longer, 26 mm (1.02 inch) higher and has 117 liters (4.13 ft3) bigger cargo space than Kia Optima Sportswagon (2015).