I bought my 2013 Hyundai Accent new I have had it for three years and the last 6 or 7 months it has this rattling noise that has gotten worse and louder. It sounds like a stain on the engine but they say it is not the engine but they don't know what it is though. I have taken it in on three different occasions and nothing has been done. what they said it might be I have done and nothing changed. it is not my gas it is not my oil filter and I had the fuel injectors cleaned so what's next? I can't stand the rattling noise that I have to try to drown out with the radio.I wish somebody knew something that would stop the rattling staining aggravating noise that does not go away. Oh I forgot the last time they did say that because it is a 4 cl that it is going to just make that noise. I have never owned a 4 cl but I do not believe that it is suppose to make rattling noises. Wow, really aggravating to keep hearing this noise.