BMW i8 (2019) is 1044 kg (2,302 lbs) lighter than GMC Sierra 2500HD (2018).
GMC Sierra 2500HD (2018) is 1011 mm (39.80 inch) longer, 93 mm (3.66 inch) wider, 683 mm (26.89 inch) higher and has 1564 liters (55.23 ft3) bigger cargo space than BMW i8 (2019).