Acura RLX (2015) is 616 mm (24.25 inch) longer and 79 mm (3.11 inch) wider than Mitsubishi Outlander Sport (2018).
Mitsubishi Outlander Sport (2018) is 181 mm (7.13 inch) higher, 374 kg (825 lbs) lighter and has 192 liters (6.78 ft3) bigger cargo space than Acura RLX (2015).