BMW 1 Series (2015) is 368 kg (811 lbs) lighter than GMC Terrain (2016).
GMC Terrain (2016) is 378 mm (14.88 inch) longer, 84 mm (3.31 inch) wider, 263 mm (10.35 inch) higher and has 1432 liters (50.57 ft3) bigger cargo space than BMW 1 Series (2015).