One problem related to engine noise has been reported for the 2004 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mazda MAZDA6 based on all problems reported for the 2004 MAZDA6.
Aug 27 engine noise, Aug 29 Mazda diagnosed internal engine damage. 2004 19,000 miles under warranty-Mazda wont repair, says the oil change of 7-23 was not performed correctly. $8000-$9000 to fix engine, nothing done at this time , trying to find an attorney.