BMW 1 Series (2015) is 105 kg (231 lbs) lighter than Mercedes CLA-Class (2014).
Mercedes CLA-Class (2014) is 301 mm (11.85 inch) longer, 13 mm (0.51 inch) wider, 17 mm (0.67 inch) higher and has 110 liters (3.88 ft3) bigger cargo space than BMW 1 Series (2015).