The 320d has a known issue with failure of the front pulley assembly, which includes a mass dampener. I am not sure if this also applies to the 318d. The problem was mostly for Diesel E46 models, but apparently some E90 models also had this problem. Anyway, you may want to get that checked.
E46, E83, E90 (all with three pedals)
BMW CCA member
Last edited by alpinweiss; 11-17-2012 at 10:06 AM.