BMW 3 Series Gran Turismo (2021) is 9 kg (20 lbs) lighter than GMC Sierra 2500HD (2015).
GMC Sierra 2500HD (2015) is 1257 mm (49.49 inch) longer, 216 mm (8.50 inch) wider, 479 mm (18.86 inch) higher and has 1206 liters (42.59 ft3) bigger cargo space than BMW 3 Series Gran Turismo (2021).