Acura RDX (2018) is 291 mm (11.46 inch) longer, 86 mm (3.39 inch) wider, 94 mm (3.70 inch) higher and has 253 liters (8.93 ft3) bigger cargo space than Mercedes B-Class (2017).
Mercedes B-Class (2017) is 300 kg (661 lbs) lighter than Acura RDX (2018).