Audi A5 (2017) is 17 mm (0.67 inch) longer, 635 kg (1,400 lbs) lighter and has 115 liters (4.06 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 44 mm (1.73 inch) wider and 288 mm (11.34 inch) higher than Audi A5 (2017).