BMW 2 Series (2016) is 8 mm (0.31 inch) longer than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 30 mm (1.18 inch) wider, 76 mm (2.99 inch) higher, 20 kg (44 lbs) lighter and has 31 liters (1.09 ft3) bigger cargo space than BMW 2 Series (2016).