Exhaust emission control system (Peugeot 405)

All models have various integrated fuel system components that help minimize emissions, and all models have at least an emission control system. Catalytic converter models also have evaporative emission and emissions control systems.

All models run on 95 unleaded petrol, but the following early engines run on 97 leaded petrol: TU3 (K1A); TU3A (K1G); XU92C (D2D); XU9J2 (D6A); XU9J4 (D6C); XU52C (B2A) However, unleaded petrol can be used if the ignition timing is reduced by 3°.