GMC Terrain (2015) is 9 mm (0.35 inch) longer, 35 mm (1.38 inch) wider, 149 mm (5.87 inch) higher and has 1252 liters (44.21 ft3) bigger cargo space than Opel Astra Sports Tourer (2014).
Opel Astra Sports Tourer (2014) is 273 kg (602 lbs) lighter than GMC Terrain (2015).