Kia Optima (2020) is 4 mm (0.16 inch) wider and 40 kg (88 lbs) lighter than Opel Insignia Country Tourer (2017).
Opel Insignia Country Tourer (2017) is 58 mm (2.28 inch) longer, 43 mm (1.69 inch) higher and has 30 liters (1.06 ft3) bigger cargo space than Kia Optima (2020).