INFINITI QX30 (2017) is 46 mm (1.81 inch) longer, 6 mm (0.24 inch) wider, 203 mm (7.99 inch) higher and has 381 liters (13.45 ft3) bigger cargo space than Porsche Cayman (2014).
Porsche Cayman (2014) is 83 kg (183 lbs) lighter than INFINITI QX30 (2017).