BMW i8 (2015) is 14 mm (0.55 inch) wider and 185 kg (408 lbs) lighter than Ford Mustang Shelby GT350 (2015).
Ford Mustang Shelby GT350 (2015) is 109 mm (4.29 inch) longer, 84 mm (3.31 inch) higher and has 254 liters (8.97 ft3) bigger cargo space than BMW i8 (2015).