Buick Regal TourX (2018) is 686 mm (27.01 inch) longer, 81 mm (3.19 inch) wider, 12 mm (0.47 inch) higher and has 192 liters (6.78 ft3) bigger cargo space than Hyundai Elantra GT (2017).
Hyundai Elantra GT (2017) is 363 kg (800 lbs) lighter than Buick Regal TourX (2018).