Acura RLX (2020) is 89 mm (3.50 inch) longer and 23 mm (0.91 inch) wider than BMW 5 Series Gran Turismo (2018).
BMW 5 Series Gran Turismo (2018) is 2 mm (0.08 inch) higher, 105 kg (231 lbs) lighter and has 108 liters (3.81 ft3) bigger cargo space than Acura RLX (2020).