 I was driving my Mazda CX-7 on the highway at 65 mph when my car made a loud noise from the engine and had a loss in power.I towed the car to a Mazda dealer where the technician that inspected my car stated the timing chain was missing a pin and caused the engine to break.Therefore my engine needed to be replaced.I replaced my engine at 72K miles which is slightly over the 70K mile service notice that Mazda recently put out for reimbursement from repairs related to the VVT Timing Chain.I hired a lawyer to pursue reimbursement of my engine replacement cost and would like to know if there are more cases of engine failure or repairs around/above 70K miles due to the timing chain.