Mercedes GLA-Class (2018) is 26 mm (1.02 inch) wider, 316 mm (12.44 inch) higher and has 290 liters (10.24 ft3) bigger cargo space than Porsche 911 (2018).
Porsche 911 (2018) is 81 mm (3.19 inch) longer and 18 kg (40 lbs) lighter than Mercedes GLA-Class (2018).