One problem related to engine 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.
Consumer requesting information to be included in Mazda owners manual. That vehicle may cut out or lose power , etc. While driving. The consumer requested to have information added to the manual regarding the consumers need to watch rpm's and let off of the gas before the engine gets to the red line and shuts itself down. When the throttle is fully depressed while passing, the engine downshifts as it is supposed to but will never upshift again until the driver consciously pats the accelerator to make it upshift or the engine hits the redline on the rpm module.