Acura RLX (2018) is 737 mm (29.02 inch) longer and 120 mm (4.72 inch) wider than Mitsubishi Outlander Sport (2015).
Mitsubishi Outlander Sport (2015) is 165 mm (6.50 inch) higher, 399 kg (880 lbs) lighter and has 192 liters (6.78 ft3) bigger cargo space than Acura RLX (2018).