BMW 3 Series Gran Turismo (2014) is 194 mm (7.64 inch) longer, 50 mm (1.97 inch) wider, 70 mm (2.76 inch) higher and has 50 liters (1.77 ft3) bigger cargo space than Mercedes CLA-Class (2015).
Mercedes CLA-Class (2015) is 250 kg (551 lbs) lighter than BMW 3 Series Gran Turismo (2014).