There are 6 stored owner reports matching the powertrain & transmission leading-label group for the 2009 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 6 of 6 matching reports.
Open the full vehicle complaint log (all categories)I BOUGHT THIS CAR 2009 FROM MECHANIC 2 WEEKS AGO I RUN FOR 100MILES FOR TO AND FROM WORK ONLY.AFTER SUDDENLY AT LIGHT CAME SO I WENT TO CHECK NEAREST AUTO PARTS STORES WITH CODE READER FOR DIAGNOSTIC & HE SAID THERE MIGHT BE A TRANSMISSION PROBLEMS. AFTER I AM ABLT TO START ENGINE BUT CAR WON'T DRIVE IN D MODE BUT R CAN WORK WITH JERK AND HORSE POWER GO UP TO 5000 UP. SO I AM GOING TO SEE WITH HAYES MAZDA IN KALAMAZOO. THEREFORE, PLEASE TAKE A SERIOUS ACTION OR INVESTIGATION INTO THIS MATTER
VEHICLE WILL NOT CRANK WITH TRANSMISSION IN PARK, MUST BE SHIFTED TO NEUTRAL. THIS IS A SAFETY CONCERN AS THE VEHICLE MAY MOVE UNINTENTIONALLY WHILE STARTING IN NEUTRAL. WHEN THE SHIFTER IS PLACED IN PARK, THE TRANSMISSION IS MECHANICALLY IN PARK AND THE VEHICLE DOES NOT ROLL. THE DASHBOARD SHIFTER POSITION INDICATOR DOES NOT HIGHLIGHT "P" THOUGH WHEN IN PARK, AND THUS THE VEHICLE DOES NOT CRANK. TO START THE VEHICLE, I HAVE TO HAVE FOOT ON THE BRAKE, PRESS START/STOP, MOVE SHIFTER TO NEUTRAL, THEN PRESS START/STOP BUTTON TO CRANK ENGINE. UNINTENDED ROLL AWAY RISK SINCE VEHICLE IS STARTED IN NEUTRAL.
ENGINE OVERHEATED WHILE DRIVING IN A STRAIGHT LINE IN TRAFFIC AT LOW SPEED WITH TEMPERATURE IN THE 80'S. THE ENGINE BLOCK CRACKED AS A RESULT. THE ENGINE AND THE COMPLETE COOLING FAN ASSEMBLY HAD TO BE REPLACED. THE ENGINE TEMPERATURE HAD RISEN HIGH ON SEVERAL OCCASIONS BEFORE THIS, WHILE IDLING, DRIVING AT LOW SPEEDS, AND DRIVING AT MODERATE AND HIGHWAY SPEEDS, TEMPERATURES RANGING FROM 50'S TO 90'S. WHEN THE OVERHEATING OCCURRED THE AIR CONDITIONING ALSO FAILED TO FUNCTION PROPERLY. I HAD COMPLAINED TO THE DEALERSHIP ABOUT THIS ISSUE AND THEY CLAIMED IT WAS A FUSE. THEY REPLACED THE FUSE, BUT IT DID NOT RESOLVE THE ISSUE. *TR
TL * THE CONTACT OWNS A 2009 MAZDA 6. THE CONTACT STATED THAT WHILE DRIVING AT UNKNOWN SPEEDS, THE VEHICLE ACCELERATED AND DECELERATED INTERMITTENTLY. THE CONTACT MENTIONED THAT THE AUTOMATIC TRANSMISSION WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER. THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE AND THE CURRENT MILEAGE WAS 31,000.
I PURCHASED A 2009 MAZDA6 ON 3/26/2009. FOUR DAYS AFTER THE PURCHASE THE NEW VEHICLE WAS IN THE SHOP TO REPLACE THE AUTOMATIC TRANSMISSION. THE AUTOMATIC TRANSMISSION CASTING HAD A SMALL WEEP HOLE IN IT WHICH WAS CAUSING A LEAK. DEALER HAD TO REPLACE THE AUTOMATIC TRANSMISSION. FOR THE FIRST 4 WEEKS I OWNED THE CAR IT WAS IN THE GARAGE FOR 3 WEEKS. *TR
2009 MAZDA 6 I TOURING AT MAKES AN INTENSE BUZZING VIBRATION SOUND AFTER SHIFTING TO DRIVE AT FIRST IGNITION OF THE DAY BEFORE ANY ACCELERATION. THE VIBRATION COMES FROM THE CENTER CUPHOLDERS IN THE FRONT, WHICH IN TURN IS FROM THE AUTOMATIC TRANSMISSION ITSELF. THIS IS A RECURRING ISSUE FROM DAY ONE. *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.