My 2021 Mazda3 2.5 Turbo AWD experienced major drivetrain component failures at approximately 65,800 miles. Hiley Mazda of Fort Worth inspected the vehicle and diagnosed failures involving the rear differential and coupling assembly, transfer case, and driveshaft. The dealership recommended replacing these major drivetrain components, with a total repair estimate of $12,107.35. I am concerned that multiple critical AWD drivetrain components have failed at such relatively low mileage. A failure involving the...
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differential, transfer case, or driveshaft could potentially affect vehicle propulsion or control, depending on the nature and circumstances of the failure. Mazda previously issued Service Alert SA-033/21, dated May 11, 2021, addressing certain rear differential and coupling assembly failures affecting 2021 Mazda3 AWD vehicles. I believe my vehicle's failure warrants investigation to determine whether it is related to this previously documented issue. The failures were diagnosed by an authorized Mazda dealership. I have not experienced an accident or unusual impact that would explain the damage. I contacted Mazda North American Operations and requested assistance. Mazda denied assistance twice, including after escalation. I am reporting these failures because of the potential safety implications of multiple AWD drivetrain components failing prematurely. I request that NHTSA review this incident and determine whether it represents a broader vehicle safety defect.