Mercedes GLC-Class (2015) is 165 mm (6.50 inch) longer, 82 mm (3.23 inch) wider, 364 mm (14.33 inch) higher and has 205 liters (7.24 ft3) bigger cargo space than Porsche 911 (2015).
Porsche 911 (2015) is 555 kg (1,224 lbs) lighter than Mercedes GLC-Class (2015).