NHTSA Complaint #10566718 — 2007 MAZDA CX-7

I PURCHASED A BRAND NEW 2007 MAZDA CX-7 IN APRIL 2007, THE VEHICLE STARTED EXPERIENCING ENGINE PROBLEMS IN SEPTEMBER 2007, I WAS TOLD IT MAY HAVE SOMETHING TO DO WITH THE VVT (VARIABLE VALVE TIMING) AND TIMING CHAIN. THE VVT WAS REPLACED BY THE DEALERSHIP A SHORT TIME LATER; HOWEVER, NOT THE TIMING CHAIN. AFTER THE VVT WAS REPLACED MY VEHICLE STARTING TO EXPERIENCE THICK WHITE SMOKE COMING OUT OF THE TAIL PIPES. MY DEALERSHIP TECHNICIAN ADVISED THIS WAS DUE TO A TURBO ISSUE WITH THE ENGINE. ALL OF THIS OCCURRED WITHIN THE FIRST COUPLE YEARS OF MY OWNERSHIP. I HAVE HAD THE TURBO REPAIRED (OUT OF POCKET EXPENSE), AS WELL AS THE VVT (2 TIMES) AND THE TIMING CHAIN IT ALL SEEMS TO NO AVAIL. THE CAR IS REVVING VERY HIGH ON COLD START UPS AND IS NOW EXPERIENCING A CODE AS OF THE LAST COUPLE OF DAYS THAT IS STATING THERE IS A DECARBONIZATION ISSUE WITH THE ENGINE THAT IS LINKED TO THE TIMING CHAIN. OF COURSE THIS IS NOW THE 5TH TIME THIS VEHICLE ENGINE WILL BE OPENED UP TO DIAGNOSE ONE OF THE KNOWN ISSUES THAT MAZDA NORTH AMERICA IS AWARE OF. I HAVE HAD THIS VEHICLE SINCE 2007, AND HAS JUST OVER 120,000 MILES ON IT. I HAVE MAINTAINED A VERY GOOD SERVICE HISTORY ON THE VEHICLE TAKING IT TO "RELIABLE" MAZDA DEALERSHIPS IN THE AREA WHERE I LIVE. MY MAIN CONCERN IS MAZDA IS DOING NOTHING TO RECTIFY THE ISSUE AND IT'S ONLY A MATTER OF TIME BEFORE SOMEONE IS SERIOUSLY HURT OR EVEN WORSE. THE VEHICLE SAFETY IS IMPAIRED DUE TO UNSTABLE ENGINE PERFORMANCE. THERE IS OBVIOUS TECHNICAL ISSUES WITH THE ENGINES FOR THIS MAZDA ENGINE MODEL. *TR