Hey I have a cruze eco it has 6100 KM on it. I noticed a knocking noise under the hood. I have brought it to a chev dealer who toldme that it was the High pressure fuel regulator. They also said they contacted GM who told them that they have not herd of this problem and have to do some testing before they repair it. There might not even be a fix for it yet. It is a real disappointment the service I am getting from GM. Let me know your thoughts or advise or if anyone is having the same problem please.