Mercedes GLS-Class (2021) is 877 mm (34.53 inch) longer, 153 mm (6.02 inch) wider, 553 mm (21.77 inch) higher and has 171 liters (6.04 ft3) bigger cargo space than Porsche 718 Cayman (2020).
Porsche 718 Cayman (2020) is 994 kg (2,191 lbs) lighter than Mercedes GLS-Class (2021).