Audi Q5 (2018) is 270 mm (10.63 inch) longer, 107 mm (4.21 inch) wider, 102 mm (4.02 inch) higher and has 64 liters (2.26 ft3) bigger cargo space than Mercedes B-Class (2014).
Mercedes B-Class (2014) is 467 kg (1,030 lbs) lighter than Audi Q5 (2018).