Mercedes B-Class (2020) is 1024 kg (2,258 lbs) lighter than Rolls-Royce Phantom (2017).
Rolls-Royce Phantom (2017) is 1423 mm (56.02 inch) longer, 194 mm (7.64 inch) wider, 76 mm (2.99 inch) higher and has 48 liters (1.70 ft3) bigger cargo space than Mercedes B-Class (2020).