Mercedes GLA-Class (2015) is 1 mm (0.04 inch) wider, 224 mm (8.82 inch) higher, 56 kg (123 lbs) lighter and has 237 liters (8.37 ft3) bigger cargo space than Porsche 718 Cayman (2021).
Porsche 718 Cayman (2021) is 41 mm (1.61 inch) longer than Mercedes GLA-Class (2015).