BMW 5 Series Touring (2018) is 376 mm (14.80 inch) longer, 117 mm (4.61 inch) wider, 127 mm (5.00 inch) higher and has 100 liters (3.53 ft3) bigger cargo space than Mercedes CLA-Class (2017).
Mercedes CLA-Class (2017) is 416 kg (917 lbs) lighter than BMW 5 Series Touring (2018).