Audi A4 (2016) is 70 mm (2.76 inch) longer, 745 kg (1,642 lbs) lighter and has 130 liters (4.59 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 48 mm (1.89 inch) wider and 232 mm (9.13 inch) higher than Audi A4 (2016).