BMW 1 Series (2014) is 1203 kg (2,652 lbs) lighter than GMC Sierra 3500HD (2015).
GMC Sierra 3500HD (2015) is 1340 mm (52.76 inch) longer, 287 mm (11.30 inch) wider, 540 mm (21.26 inch) higher and has 1631 liters (57.60 ft3) bigger cargo space than BMW 1 Series (2014).