I have had to replace the timing chain which was covered under warranty, ever since I have burnt oil in the engine, with no apparent leaks. I have to add or change my oil almost every 3-4 weeks and I only drive 60 miles a day to and from work. I have taken it to mechanics and they don't know how to fix it except replace the entire engine, which to me is unacceptable! So for now I just waste oil and try not to drive it unless I have to. I would just trade it in but I would be upside down on my loan. I wish It would work because I love my car so much!