Kia Optima Sportswagon (2018) is 157 mm (6.18 inch) longer and 46 mm (1.81 inch) wider than Opel Astra Sports Tourer (2020).
Opel Astra Sports Tourer (2020) is 65 mm (2.56 inch) higher, 351 kg (774 lbs) lighter and has 100 liters (3.53 ft3) bigger cargo space than Kia Optima Sportswagon (2018).
