There are 5 owner-reported fuel system complaints for the 2004 Mazda Mazda6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
2004 MAZDA 6 WAGON. DURING THE 6 MONTHS I HAVE OWNED THIS VEHICLE. I HAVE HAD FOUR OCCURRENCES WHEN TAKING A HIGHWAY RAMP THAT THE CAR EITHER STALLS OR LOOSES POWER WHEN RE-ENTERING THE ROADWAY. THIS OCCURS WHEN THE FUEL TANK IS A 1/4 FULL AND BELOW. *TR
ENGINE FAILED WHILE DRIVING BECAUSE OF A PROBLEM WITH THE THROTTLE BODY. THERE WAS NO WARNING. FOUND THAT MAZDA HAS KNOWN ABOUT THIS PROBLEM SINCE MAY 2006 IN FACT THERE IS A SERVICE BULLETIN THAT COMPLETELY IDENTIFIES THIS SITUATION DOWN TO THE PART NUMBER CODE ON THE DEFECTIVE PART. BULLETIN NUMBER 01-016/06. THIS HAPPENED ON A MAJOR FREEWAY AT 70 MPH, IT WAS JUST LUCK THAT I WAS ABLE TO GET OFF OF THE HIGHWAY WITHOUT A MAJOR INCIDENT. MY CAR WAS UNDER WARRANTY WHEN THIS BULLETIN CAME OUT WHY WAS IT NOT REPLACED OR RECALLED.. I HAVE SEEN RECALLS FOR MANY THINGS WITH LESS SAFETY IMPACT. I WAS CHARGE $473 FOR THE REPAIR. *TR
1)NOV. '04....12 HOURS AFTER WE PURCHASED THE VEHICLE, WERE CALLED BACK TO HAVE MAZDA REPLACE GAS TANK "DUE TO RECALL".MAZDA "MISPLACED" MY NEW GAS TANK. TOOK APPROX.4 DAYS TO GET MY BRAND NEW CAR BACK IN MY POSSESSION. 2)05/01/04: A.COMPLAINED OF MOANING SOUND FROM STEERING WHEEL/ENGINE. B) BREAKS SQUEAKING LOUDLY. MAZDA"PROBLEM NOT DUPLICATED" 3)8-19-05 A. CLUTCH SHUDDERS WHEN GOING FROM 0-1 & 1-2 GEAR (MANUAL TRANS.) B. MOANING SOUND FROM STEERING/ENGINE RIGHT FRONT AREA. MAZDA: "UNABLE TO DUPLICATE" 3) CAR MAKES MOANING SOUND FROM STEERING/RIGHT FRONT ENGINE WHILE TURNING. MAZDA: "UNABLE TO DUPLICATE" PROBLEM LISTINGS GO ON WITH MY SAME COMPLAINTS. EACH TIME, MAZDA STATES "PROBLEM NOT DUPLICATED". NOW, WARRANTY IS UP, GUESS WHAT: MAZDA SAYS: "WE'VE FOUND YOUR PROBLEM! YEAH, WE FOUND IT REALLY QUICKLY, IS THE REASON THAT I'M CALLING YOU SO SOON. YOU NEED A NEW CLUTCH WHICH WILL FIX YOUR ONGOING CLUTCH COMPLAINT OF 3 YEARS. OH, AND WE'LL NEED TO ORDER A NEW ENGINE MOUNT, AND TAKE APART THE ENGINE TO TAKE A HARD LOOK AT THE TRANSMISSION. YOU SEEMS TO HAVE SOME PROBLEMS FROM YOUR CLUTCH WHICH AFFECTED THE TRANSMISSION. YOUR WARRANTY IS UP, AND WE WOULD HAVE FIXED THE PROBLEM HAD WE NOTICED IT BEFORE 3,000 MILES. BUT, NO NEED TO WORRY.....WE'LL PUT YOU IN A RENTAL CAR...." *TR
I AM THE ORIGINAL OWNER OF THE VEHICLE, I COMPLAINED OF ENGINE SURGE ON SEVERAL VISITS TO MAZDA, AND THEY WOULD ALWAYS SAY THEY WERE UNABLE TO DUPLICATE THE PROBLEM. I WAS RECENTLY DRIVING THE VEHICLE WHEN IT ACCELERATED ON IT'S OWN, THE RPM'S WOULD FLUCTUATE BETWEEN 2 AND 4. THE VEHICLE ACCELERATED UNCONTROLLABLY, I HAD DIFFICULTY STOPPING AT STOP SIGNS AND TRAFFIC LIGHTS ON MY WAY TO MY MECHANIC. WHEN I REACHED HIS GARAGE I LEFT THE VEHICLE IN PARK TO SHOW HIM WHAT IT WAS DOING AND IT IDLED AT 3 RPMS. THE MECHANIC HAS NOT BEEN ABLE TO REPAIR THE VEHICLE. I HAVE RESEARCHED THE PROBLEM AND HAVE FOUND THAT OTHER MAZDA AND FORD VEHICLES HAVE HAD SIMILAR ISSUES. *TR
I HAVE A 2004 MAZDA 6S I HAVE HAD TWO INCIDENTS WHERE THE FUEL LINE HAS DETACHED FROM INSIDE THE ENGINE AND THE CAR HAS STALLED AND GASOLINE HAS POURED OUT FROM UNDERNEATH THE CAR. THE FIRST TIME THE DEALERSHIP TOLD ME THAT THERE WAS A RECALL AND I SHOULD RECEIVED IT IN THE MAIL , I LATER FOUND OUT THERE WAS NO RECALL . THEY THEN FIXED THE CAR SUPPOSELY AND THREE MONTHS LATER IT HAPPENED AGAIN.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026