I own a 2001 C320 (~11k miles on it). I have brought it to the dealer for two different engine noises. The first was a ticking noise that sounded like a lifter to me. It turned out to be the purge valve which was replaced with one of a supposedly better design. The second noise is what sounds like a bearing rapping upon startup. It is particularly noticeable on the first start of the day but is not consistent. I could only describe it as a rap bap bap bap bap when starting the engine. The noise was pointed out to me and witnessed a few times by my father who is a mechanic with 40+ years experience and also owns a MB. When I brought it to the dealer to point this noise out (as well as the ticking) they told me this noise was perfectly normal. I am not completely sold on that answer but feel I have at least documented the problem with them. I am tired of bringing it in for stupid things that I am so surprised to find in a Mercedes.<br> Anyway, I would really appreciate some feedback on this one. This seems to be an excellent forum for such issues. Thanks in advance!