Buick Regal TourX (2018) is 569 mm (22.40 inch) longer, 58 mm (2.28 inch) wider and has 179 liters (6.32 ft3) bigger cargo space than Mercedes GLA-Class (2014).
Mercedes GLA-Class (2014) is 11 mm (0.43 inch) higher and 287 kg (633 lbs) lighter than Buick Regal TourX (2018).