Acura RLX (2016) is 158 mm (6.22 inch) longer and 62 mm (2.44 inch) wider than BMW 3 Series Gran Turismo (2014).
BMW 3 Series Gran Turismo (2014) is 43 mm (1.69 inch) higher, 49 kg (108 lbs) lighter and has 98 liters (3.46 ft3) bigger cargo space than Acura RLX (2016).