Kia Cadenza (2015) is 58 mm (2.28 inch) longer than Opel Insignia Sports Tourer (2020).
Opel Insignia Sports Tourer (2020) is 7 mm (0.28 inch) wider, 37 mm (1.46 inch) higher, 65 kg (143 lbs) lighter and has 110 liters (3.88 ft3) bigger cargo space than Kia Cadenza (2015).