NHTSA Complaint #11183139 — 2010 MAZDA MAZDA3

10+ INCIDENTS OF SUDDEN UNINTENDED ACCELERATION SINCE AUG 2018. ALWAYS AT FREEWAY SPEED OF TRAFFIC, I.E. 70-75MPH. OCCURS WHEN INTENTIONALLY DECELERATING (EASING OFF THE GAS PEDAL AND INITIATING BRAKING). RPMS JUMP TO 7 OR 8. ACCELERATION IMMEDIATELY DROPS AND STEADS AFTER TAPPING/APPLYING PRESSURE TO BRAKES. HAS BEEN TAKEN RALPH THAYER DEALERSHIP 3 TIMES -- AUG2018, JAN2019, FEB2019. EACH TIME VEHICLE KEPT FOR A WEEK BUT UNABLE TO DUPLICATE ISSUE. DATA RECORDER WAS INSTALLED IN JAN2019. DESPITE A SEVERAL MINUTE LONG EPISODE ON FEB 22, 2019 IN WHICH THE CAR BEHAVED ERRATICALLY (BUCKLING AND JOLTING) AND WOULDN'T ACCELERATE MORE THAN 60 MPH WHILE THE RPMS WERE HIGH (4-5) FOR SEVERAL MINUTES, THIS WAS SOMEHOW NOT SENSED BY THE DATA RECORDER. MY OWN GUESS IS AN ISSUE WITH THE PCM OR THE AUTOMATIC TRANSMISSION CONTROL MODULE. HAVE SUAS AFFECTED TRANSMISSION? SEEMS TO BE A KNOWN ISSUE YET THE DEALER/MAZDA REACTION IS PERFUNCTORY AT BEST. NO COMMITMENT TO RESOLVE. E.G. BECAUSE MY DRIVING WAS LIMITED WHILE THE RECORDER WAS IN, I REQUESTED THAT IT BE LEFT IN FOR 3 MONTHS. MAZDA REFUSED, STATING THAT IF IT HAPPENS AGAIN (AND IT WILL), THEY'LL REINSTALL THE RECORDER. THAT A COLLISION HASN'T HAPPENED IS JUST LUCK. A SERIOUS ACCIDENT CAUSED BY THIS VEHICLE IS IMMINENT SINCE THESE ISSUES ADVERSELY AFFECT THE ABILITY TO CONTROL THE VEHICLE. I ALSO DON'T RELISH BEING MY OWN CRASH TEST DUMMY. THERE IS NOTHING THEY CAN DO BEYOND A SERIES OF EXPENSIVE PARTS REPLACEMENTS BASED ON THEIR GUESSES? I HAVE SOME VIDEO AND PHOTOS PER THEIR REQUEST, BUT NOTE THAT ATTEMPTING TO PHOTOGRAPH OR VIDEO THE DASHBOARD WHILE DRIVING IS AN EXTRA BULLET IN WHAT ALREADY FEELS LIKE RUSSIAN ROULETTE. I'VE ATTACHED A SUMMARY OF EVENTS PROVIDED TO MAZDA IN JANUARY AND THE MOST RECENT MECHANIC'S REPORT. $800 SUGGESTED FOR GUESS-BASED TCM REPLACEMENT, $240 INCONCLUSIVE TESTS, NO LOANER PROVIDED.