I'm glad I'm not alone on this, I have had the mot station look-useless. Several mechanics and one a Japanese specialist and they just can't pin point it. It was only slight but after 6 months it's pretty much constant even on what appears as level ground! I'm reluctant to just buy parts to see of it works. Oh and another thing, the car now wobbles over 100mph since the knocking has got worse could that be do with it or do my wheels need balancing?