There are 4 stored owner reports matching the powertrain & transmission leading-label group for the 2010 Mazda Mazda6 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)Car won't start due to PCM/TCM lost communication.
MY VEHICLE IS AUTOMATIC TRANSMISSION AND LAST WEEKEND I WAS DRIVING AT THE FREEWAY WITH MY FAMILY AT 70 MPH ON CRUISE AND ALL OF A SUDDEN WE GOT BIG JERK FROM MY VEHICLE AND THE VEHICLE RPM STARTED INCREASING THE SAME TIME FIRST I THOUGHT SOMEONE HIT ME FROM BACK BUT THE GLADLY THE VEHICLE WAS IN OTHER LANE AND HE HONKED AT ME. I THEN I SAW D LIGHT DISAPPEAR ON THE PANEL AND THE VEHICLE WAS IN VERY HIGH RPM MODE. I DIDN'T KNOW WHAT IS HAPPENING I SAFELY TRIED TO PULL ON THE RIGHT AND STOPPED TO SEE WHATS WRONG BUT COULDN'T FOUND ANYTHING. I TURNED OFF VEHICLE FOR A MINUTE AND STARTED AGAIN. IT WORKED FINE FOR 5 MIN AND AS SOON AS I REACHED 55 OR 60 MPH THE D LIGHT STARTED BLINKING AGAIN AND AGAIN I GOT HIGH RPMS AND JERK. IT ALMOST HAD CAUSED THE ACCIDENT AS THE OTHER VEHICLE ALMOST HIT ME FROM THE BACK. IT FELT LIKE ENGINE BRAKING. THEN I DROVE VERY LOW SPPED ON INNER CITY ROAD WITH MY BLINKERS ON TO REACH HOME SAFELY. NOW DEALER IS TELLING ME THAT IT WILL COST ME MINIMUM $3000 TO REPLACE THE TRANSMISSION. I THINK ITS A KNOW ISSUE TO MAZDA AND THEY SHOULD FIX MY VEHICLE TRANSMISSION ATLEAST. THIS VEHICLE IS NOT SAFE TO DRIVE.
CAR SURGES FORWARD WHEN YOU SLOW DOWN OR IS STOPPING TO PARK. *TR
MY SON TOOK MY CAR TO SCHOOL. HE WAS GOING TO LEAVE AFTER SCHOOL LET OUT, HE WAS GOING TO GIVE HIS FRIEND A RIDE HOME. THIS IS A 6 SPEED CAR. HIS FRIEND GOT IN THE CAR ON THE PASSENGER SIDE, MY SON WAS TALKING TO HIS BROTHER, HE WAS NOT IN THE CAR. MY SON HAD PUT THE KEYS ON THE DRIVER SEAT, HIS FRIEND PUT THE KEY IN THE IGNITION AND TURNED THE KEY TO ACCESSORIES TO LISTEN TO THE RADIO, THE CAR HAD THE EMERGENCY BRAKE ON, AND IT WAS IN FIRST GEAR. WHEN HE TURNED THE KEY TO LISTEN TO THE RADIO THE CAR TOOK OFF!!!! I AM NOT SURE HOW FAST IT WAS GOING BUT IT CRASHED INTO A TREE AND STOPPED. THERE WAS NO DRIVER!! THERE IS A POLICE REPORT ON THIS, AND THERE WERE SEVERAL WITNESSES. MY SON'S FRIEND HIT HIS HEAD ON THE WINDSHIELD AND IT CRACKED THE WINDSHIELD. I CONTACTED MAZDA HEADQUARTERS TO MAKE THEM AWARE, AND THEY SEEMED BOTHERED THAT I EVEN CALLED!!!!! IT IS A MIRACLE A KID WAS NOT WALKING BY AND WAS STRUCK BY THIS OUT OF CONTROL CAR. *TR
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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.