BMW i8 (2017) is 394 mm (15.51 inch) longer and 172 mm (6.77 inch) wider than Mitsubishi Outlander Sport (2015).
Mitsubishi Outlander Sport (2015) is 338 mm (13.31 inch) higher, 155 kg (342 lbs) lighter and has 460 liters (16.24 ft3) bigger cargo space than BMW i8 (2017).