Mercedes CLS-Class (2018) is 1206 mm (47.48 inch) longer, 198 mm (7.80 inch) wider, 28 mm (1.10 inch) higher and has 279 liters (9.85 ft3) bigger cargo space than MINI Roadster (2015).
MINI Roadster (2015) is 530 kg (1,168 lbs) lighter than Mercedes CLS-Class (2018).