Buick Regal (2015) is 465 mm (18.31 inch) longer and 318 mm (12.52 inch) wider than Mitsubishi Outlander Sport (2020).
Mitsubishi Outlander Sport (2020) is 163 mm (6.42 inch) higher, 195 kg (430 lbs) lighter and has 212 liters (7.49 ft3) bigger cargo space than Buick Regal (2015).