BMW X3 (2014) is 904 kg (1,993 lbs) lighter than GMC Sierra 3500HD (2016).
GMC Sierra 3500HD (2016) is 1043 mm (41.06 inch) longer, 154 mm (6.06 inch) wider, 290 mm (11.42 inch) higher and has 1441 liters (50.89 ft3) bigger cargo space than BMW X3 (2014).
