BMW i8 (2019) is 1154 kg (2,544 lbs) lighter than GMC Sierra 3500HD (2017).
GMC Sierra 3500HD (2017) is 1010 mm (39.76 inch) longer, 93 mm (3.66 inch) wider, 684 mm (26.93 inch) higher and has 1837 liters (64.87 ft3) bigger cargo space than BMW i8 (2019).