Buick Regal Sportback (2020) is 544 mm (21.42 inch) longer and 51 mm (2.01 inch) wider than Mitsubishi Outlander Sport (2016).
Mitsubishi Outlander Sport (2016) is 176 mm (6.93 inch) higher, 252 kg (556 lbs) lighter and has 144 liters (5.09 ft3) bigger cargo space than Buick Regal Sportback (2020).