Acura RLX (2019) is 208 mm (8.19 inch) longer and 62 mm (2.44 inch) wider than BMW 3 Series Gran Turismo (2018).
BMW 3 Series Gran Turismo (2018) is 42 mm (1.65 inch) higher, 69 kg (152 lbs) lighter and has 98 liters (3.46 ft3) bigger cargo space than Acura RLX (2019).