Report "Hi, I have a Megane II 1.9dci. Seem to have distinct "growl" or vibration that occurs at 1900 revs or as turbo kicks in. It then goes away and sounds normal. No performance changes just this wierd growl that was not there when car was newer.I had car from new and its been making this noise for along time, but its really worrying me now. Some days more distinct than others. Seems worse on cold days"