Acura RLX (2018) is 89 mm (3.50 inch) longer and 23 mm (0.91 inch) wider than BMW 5 Series Gran Turismo (2019).
BMW 5 Series Gran Turismo (2019) is 12 mm (0.47 inch) higher, 45 kg (99 lbs) lighter and has 108 liters (3.81 ft3) bigger cargo space than Acura RLX (2018).