There are 1 stored owner reports matching the powertrain & transmission leading-label group for the 2017 Mazda MX-5 Miata 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 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)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)
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.