2017 Mazda MX-5

I am filing this complaint regarding a manual transmission failure on my 2017 Mazda MX-5 Miata (VIN: [XXX] ) at 55,000 miles. The failure occurred without warning while driving, causing immediate and significant transmission malfunction. Mazda issued Technical Service Bulletin 05 [XXX] c addressing this exact defect — defective synchros in 2nd and 3rd gear causing grinding, inability to engage gears, and transmission failure. My VIN falls within the TSB coverage range. The cutoff is sequential number XXX and my sequential number is XXX, placing me within the affected range. Despite this documented defect and my vehicle being under Mazda's Powertrain Limited Warranty at time of failure (under 60,000 miles), Mazda refused full coverage. The dealer offered only 50% goodwill. I escalated to the Mazda regional representative, who also declined full coverage and redirected me back to the dealer — evasive given the documented nature of this defect. This is not isolated. Multiple 2016–2017 MX-5 owners have reported identical failures, and a Mazda engineer publicly acknowledged on video that weak transmission tolerances cause gear teeth to shear under load. Active petitions are calling for a formal recall. While I was able to drive to the dealership, this failure occurred without warning. A similar failure at highway speeds or in a less favorable situation could result in complete loss of vehicle control, posing significant danger to the driver and surrounding traffic. I request that NHTSA: (1) investigate this defect across all 2016–2017 MX-5 Miata manual transmission vehicles, (2) determine whether a formal recall is warranted, and (3) require Mazda to honor full warranty coverage for VINs within the TSB range. I have retained all documentation and am prepared to provide additional information upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)