Acura RLX (2014) is 642 mm (25.28 inch) longer, 94 mm (3.70 inch) wider and has 14 liters (0.49 ft3) bigger cargo space than Hyundai Elantra GT (2018).
Hyundai Elantra GT (2018) is 1 mm (0.04 inch) higher and 468 kg (1,032 lbs) lighter than Acura RLX (2014).