Audi A7 (2015) is 544 mm (21.42 inch) longer, 106 mm (4.17 inch) wider and has 114 liters (4.03 ft3) bigger cargo space than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 74 mm (2.91 inch) higher and 510 kg (1,124 lbs) lighter than Audi A7 (2015).