BMW 6 Series Gran Coupe (2018) is 592 mm (23.31 inch) longer, 91 mm (3.58 inch) wider and has 38 liters (1.34 ft3) bigger cargo space than Mercedes GLA-Class (2014).
Mercedes GLA-Class (2014) is 102 mm (4.02 inch) higher and 506 kg (1,116 lbs) lighter than BMW 6 Series Gran Coupe (2018).