Alfa Romeo Stelvio (2017) is 54 mm (2.13 inch) wider and 13 kg (29 lbs) lighter than GMC Terrain (2016).
GMC Terrain (2016) is 20 mm (0.79 inch) longer, 13 mm (0.51 inch) higher and has 1267 liters (44.74 ft3) bigger cargo space than Alfa Romeo Stelvio (2017).