Buick Regal (2014) is 465 mm (18.31 inch) longer and 46 mm (1.81 inch) wider than Mitsubishi Outlander Sport (2018).
Mitsubishi Outlander Sport (2018) is 163 mm (6.42 inch) higher, 255 kg (562 lbs) lighter and has 212 liters (7.49 ft3) bigger cargo space than Buick Regal (2014).