BMW i8 (2019) is 1191 kg (2,626 lbs) lighter than GMC Sierra 2500HD (2019).
GMC Sierra 2500HD (2019) is 1011 mm (39.80 inch) longer, 93 mm (3.66 inch) wider, 683 mm (26.89 inch) higher and has 1573 liters (55.55 ft3) bigger cargo space than BMW i8 (2019).