Mazda CX-9 (2015) is 713 mm (28.07 inch) longer, 150 mm (5.91 inch) wider, 171 mm (6.73 inch) higher and has 595 liters (21.01 ft3) bigger cargo space than Mercedes B-Class (2014).
Mercedes B-Class (2014) is 566 kg (1,248 lbs) lighter than Mazda CX-9 (2015).