Just wonder if anybody out there has had the same problem with their VRSIt's a 07 Vrs Octavia petrol but recently I have noticed that it is running really rough!!! The way to describe it, is that the smoothest road seems like corrugated sheeting and there is a reduction in power. Also, when you come off the power it seems rather rough. I keep thinking it is suspension/wheel related rather than the engine? Had the wheels checked for alignment.Noticed on the forum that the Dump Valve failure is mentioned quite a bit. Could this be the problem?Hopefully someone out there knows what the likely solution is. It's such a great car otherwise.Cheers

Diverter valve failure is unlikely on an unmapped car. Also unlikely to be the cause of the symtoms you describe.

Could be a problem with your wheel bearingsor wheel balancing maybe but I'm just guessing.