Mercedes GLA-Class (2014) is 4 mm (0.16 inch) higher and 750 kg (1,653 lbs) lighter than Mercedes S-Class (2015).
Mercedes S-Class (2015) is 828 mm (32.60 inch) longer, 95 mm (3.74 inch) wider and has 79 liters (2.79 ft3) bigger cargo space than Mercedes GLA-Class (2014).