Acura RLX (2016) is 572 mm (22.52 inch) longer and 56 mm (2.20 inch) wider than Mercedes GLA-Class (2017).
Mercedes GLA-Class (2017) is 146 mm (5.75 inch) higher, 221 kg (487 lbs) lighter and has 13 liters (0.46 ft3) bigger cargo space than Acura RLX (2016).