My PE also have this 'yik yik ' sound , its when u let the car moves in 'D' but stepping on the breaks . its only give out this sound
when almost come to a stop .. but now no more this already .. i think the break pad has 'run-in' already ...

---

Added on October 7, 2010, 5:45 pmMy rear suspension , i heard squeaking sound from it during going over bumps but only fast and hard times .. 
i thought new car shouldn't have any sound