Hi All, my sportback has an annoying knocking noise which appears to come from around the drivers door / seat area when I pull off from a standstill or break to standstill. It sounds like its coming from the door area and I suspected the lock, but with the door open, I get the same noise. It is a single or sometimes double tap / knock sound which happens just as the car moves off and you feel yourself being pushed into the seat. The other peculiar thing is that it only happens after a prolonged period of driving. Has anyone else any experience of this?