Kia Niro EV (2019) is 26 mm (1.02 inch) wider, 267 mm (10.51 inch) higher and has 362 liters (12.78 ft3) bigger cargo space than Porsche Cayman (2016).
Porsche Cayman (2016) is 4 mm (0.16 inch) longer and 318 kg (701 lbs) lighter than Kia Niro EV (2019).