I have a 2007 mazda cx-7, my vehicle has 71,000 miles i have noticed a riddling noise for the past few months. i visit three mechanics and all three mechanics are telling me it's the vvt timing chain. the cost the repair my vehicle is $3,000 to $4,000 dollars. i contact the mazda dealer and because i have no warranty i have to pay out of pocket. so i begin to do my research online. i realized that there are hundreds of other mazda cx-7 owners that are having the same issues as i. what a coincidence mazda has discontinued manufacturing the mazda cx-7. this is a manufacture issue and mazda needs to own up for it. hundreds of people are losing their vehicles due to this vvt timing chain issue and mazda needs to make this a re-call. i know one thing i hope and pray nothing happens to me while driving my vehicle because i will not hesitate to file a lawsuit against the mazda corp. i hope someone can help all of us who are current owners of mazda cx-7. i will continue to spread the word of this horrific issue with this vehicle model.