BMW i8 (2015) is 702 mm (27.64 inch) longer and 244 mm (9.61 inch) wider than Volkswagen CrossPolo (2018).
Volkswagen CrossPolo (2018) is 190 mm (7.48 inch) higher, 375 kg (827 lbs) lighter and has 126 liters (4.45 ft3) bigger cargo space than BMW i8 (2015).