Mercedes CLS-Class (2014) is 110 mm (4.33 inch) longer and 54 mm (2.13 inch) wider than Peugeot 508 SW (2016).
Peugeot 508 SW (2016) is 70 mm (2.76 inch) higher, 200 kg (441 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than Mercedes CLS-Class (2014).