Hello I need some help. Here is the breakdown of what has happened.

Three months ago I had all 4 coils replaced, as my car was shaking really bad when driving. (Covered by recall)

Two months ago the check engine came back on when I was in park and the car started to shake. I took it to the Audi dealer and they said my PVC hose broke off causing a major vacuum leak.

They repaired it and I drove it for 3 weeks and light came back on. A weird noise could be herd when starting and turning of my car. I took it to my mechanic to get the wheel bearing replaced (unrelated) and he replaced he plugs and valve cover gasket because it was cracked and oil leaked into where the spark plug sits.
It drove like new for about a week Then I could hear that weird sound again when I was parked and light started flashing and is shaking my car again. Same symptoms as before.

Can anybody help me out and let me know what could be the problem?

 

Sound like you have a lemon and/ or need to get a new mechanic ! Go straight to Independant Tuning and let the boys there sort this out ...