Hi guys, when I accelerate faster my car start to have some vibrations and I don’t know why, what could it be? There is a video, thanks guys

 

I'd say that vid is way too short to give much people a clue as to what that could be. As an aside I had an A/C pump fail on my IX GT and it sounded like big ends were knocking and the smell was of steel being welded, plus some smoke from the bonnet vent , the engine stumbled at idle as the pump was seizing up and causing a lot of drag on the Aux belt. I think the bearings in the A/C pump had failed and started to weld themselves together with the bits of metal left. I've bypassed the A/C for now with a short (no A/C) aux belt whilst I locate a new/working A/C pump. Since ptting the short aux belt on it feels like I've gained a load of boost/HP so I suspect the A/C pump was on a slow road to meltdown before it when phutt (or knock/knock)