Audi S7 (2018) is 563 mm (22.17 inch) longer, 104 mm (4.09 inch) wider and has 114 liters (4.03 ft3) bigger cargo space than Mercedes GLA-Class (2015).
Mercedes GLA-Class (2015) is 72 mm (2.83 inch) higher and 645 kg (1,422 lbs) lighter than Audi S7 (2018).