BMW 3 Series Gran Turismo (2014) is 400 mm (15.75 inch) longer, 24 mm (0.94 inch) wider, 14 mm (0.55 inch) higher and has 99 liters (3.50 ft3) bigger cargo space than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 340 kg (750 lbs) lighter than BMW 3 Series Gran Turismo (2014).