Buick Regal TourX (2018) is 15 mm (0.59 inch) longer, 13 mm (0.51 inch) wider, 7 mm (0.28 inch) higher and has 150 liters (5.30 ft3) bigger cargo space than Kia Cadenza (2015).
Kia Cadenza (2015) is 17 kg (37 lbs) lighter than Buick Regal TourX (2018).