GMC Terrain (2014) is 288 mm (11.34 inch) longer, 53 mm (2.09 inch) wider, 122 mm (4.80 inch) higher and has 1387 liters (48.98 ft3) bigger cargo space than Mercedes B-Class (2020).
Mercedes B-Class (2020) is 123 kg (271 lbs) lighter than GMC Terrain (2014).