Mercedes GLK-Class (2017) is 20 mm (0.79 inch) wider and 211 mm (8.31 inch) higher than Peugeot 408 (2017).
Peugeot 408 (2017) is 214 mm (8.43 inch) longer, 460 kg (1,014 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than Mercedes GLK-Class (2017).