Peugeot 508 (2014) is 250 mm (9.84 inch) longer, 32 mm (1.26 inch) wider, 12 mm (0.47 inch) higher and has 190 liters (6.71 ft3) bigger cargo space than Subaru Impreza WRX (2018).
Subaru Impreza WRX (2018) is 41 kg (90 lbs) lighter than Peugeot 508 (2014).