Peugeot 5008 Turbo Lag

I had a similar issue on my 5008. Same symptoms - felt like the car was constantly fighting to accelerate. Does it feel a bit like compressor surge when you accelerate?

Compressor surge? Never really thought about it like that... What was it in your case? Was it something to do with the bypass valve or the pressure drop?

Yes, the sound was very similar to compressor surge. If I remember correctly, it was a defect in a vacuum switching valve. I would recommend that you go to a workshop.

Thanks a lot, that's super helpful. Turns out you were spot on! Took it to the shop, and the vacuum switching valve was indeed faulty. Cost me 140€, but she's running like new again!