Mercedes AMG GT (2014) is 119 mm (4.69 inch) wider than Peugeot 408 (2020).
Peugeot 408 (2020) is 204 mm (8.03 inch) longer, 199 mm (7.83 inch) higher, 225 kg (496 lbs) lighter and has 105 liters (3.71 ft3) bigger cargo space than Mercedes AMG GT (2014).