GMC Terrain (2018) is 573 mm (22.56 inch) longer, 32 mm (1.26 inch) wider, 381 mm (15.00 inch) higher and has 1457 liters (51.45 ft3) bigger cargo space than Mercedes SLK-Class (2014).
Mercedes SLK-Class (2014) is 293 kg (646 lbs) lighter than GMC Terrain (2018).