Peugeot 408 (2014) is 125 mm (4.92 inch) longer, 42 mm (1.65 inch) wider, 33 mm (1.30 inch) higher and has 107 liters (3.78 ft3) bigger cargo space than Subaru Impreza GK (2017).
Subaru Impreza GK (2017) is 200 kg (441 lbs) lighter than Peugeot 408 (2014).