Lexus GX (2014) is 392 mm (15.43 inch) longer, 85 mm (3.35 inch) wider, 401 mm (15.79 inch) higher and has 1160 liters (40.96 ft3) bigger cargo space than Porsche Cayman (2016).
Porsche Cayman (2016) is 490 kg (1,080 lbs) lighter than Lexus GX (2014).