Peugeot 308 diesel particulate filter issue

I had a similar problem with my 308 diesel. Reduced power and smoke are classic symptoms. Is the engine light on? Also, do you usually do short trips or longer journeys?

Yes, the engine light is on. I mostly do short, urban trips. Could that be causing it?

Definitely. Short trips don't let the diesel particulate filter regenerate properly, which causes buildup and faults. Sounds like it's blocked. You could try a forced regeneration, but I'd get it checked by a workshop. I had to replace mine, cost a fortune!

Thanks for the info. I took it to a workshop, and it was the diesel particulate filter. The backpressure was too high. The replacement cost me 1550€.