Acura RLX (2018) is 28 mm (1.10 inch) longer and 111 kg (245 lbs) lighter than BMW 5 Series Gran Turismo (2017).
BMW 5 Series Gran Turismo (2017) is 11 mm (0.43 inch) wider, 93 mm (3.66 inch) higher and has 78 liters (2.75 ft3) bigger cargo space than Acura RLX (2018).