Mercedes GLA-Class (2018) is 276 mm (10.87 inch) longer, 17 mm (0.67 inch) wider, 308 mm (12.13 inch) higher and has 100 liters (3.53 ft3) bigger cargo space than Mercedes SLK-Class (2014).
Mercedes SLK-Class (2014) is 108 kg (238 lbs) lighter than Mercedes GLA-Class (2018).