BMW i8 (2019) is 1143 kg (2,520 lbs) lighter than GMC Sierra 3500HD (2015).
GMC Sierra 3500HD (2015) is 1011 mm (39.80 inch) longer, 93 mm (3.66 inch) wider, 658 mm (25.91 inch) higher and has 1837 liters (64.87 ft3) bigger cargo space than BMW i8 (2019).