Cadillac STS (2018) is 626 mm (24.65 inch) longer and 38 mm (1.50 inch) wider than Hyundai Elantra GT (2019).
Hyundai Elantra GT (2019) is 13 mm (0.51 inch) higher, 424 kg (935 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Cadillac STS (2018).
