GMC Terrain (2016) is 297 mm (11.69 inch) longer, 15 mm (0.59 inch) wider, 73 mm (2.87 inch) higher and has 1357 liters (47.92 ft3) bigger cargo space than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 185 kg (408 lbs) lighter than GMC Terrain (2016).