Ok guys this is really worrying me. I have an intermittent rattle whenever the car is idling, when i am sitting in the car i can feel it shudder through the car. Does not happen when im driving, only when the car is idling. Car is an 08 2.0TDi 143. Car is driving totally fine, no power issues etc. Does seem quite loud to me, no experience with Audi as this is my first one but im sure its definitely not normal for it to do that. Can someone please put my mind at ease, hope it is nothing expensive going wrong.