Mercedes CLS-Class (2018) is 687 mm (27.05 inch) longer, 78 mm (3.07 inch) wider and has 50 liters (1.77 ft3) bigger cargo space than Peugeot 308 (2016).
Peugeot 308 (2016) is 40 mm (1.57 inch) higher and 455 kg (1,003 lbs) lighter than Mercedes CLS-Class (2018).