There are 4 stored owner reports matching the powertrain & transmission leading-label group for the 2023 Mazda MX-5 Miata in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
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Loaded 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)Manual transmission will not reliably shift from 2nd to 3rd gear without a grinding noise. Other owners are reporting similar issues that have required a full replacement of the transmission in MY2023 cars.
Mazda Miata model years 2022-2024 with manual 6sp transmission are experiencing a large number of failures at low mileage. Some owners are reporting 2 failed transmissions at less than 10,000 miles. 3rd and 4th great become unusable without warning, increasing the potential for a crash. There have been over 50 reports of manual transmission failure from 2022-2024 Miata owners. Concern: When the transmission internals fail without warring the vehicle experiences loss of power and forward movement, substantially increasing the chance of an accident in a highway driving scenario. This problem has been confirmed by Mazda dealer network. Mazda is offering to replacement transmissions, but has not told the owners if there have been modifications and improvements to the replacement units to resolve the issue, or if they are replacing the defective transmission with same kind.
My vehicle has only 8700 miles. At around 2500 miles first gear refused to engage, and I had to start the car in second for a week. That week I scheduled for service but the problem was not reproducible, since then it has been intermittent by never prolonged like that full week. This is and was a safety risk because I have been stuck on a hill, stop signs, and green traffic lights etc. Because it was not reproducible, the claim was dismissed. At around 4000 miles and on, third gear became very inconsistent in shift action. Typically it won't allow me to shift into third at all, other times it will grind, or requires excessive force to engage gear. This happens both in motion and at a stop. In traffic, the sudden loss in speed and rpm from being unable to shift into third poses a risk, especially getting onto on ramps. The dealer still cannot reproduce the issue, and in fact I have a 2 minute long video of the fault - pending their response to the video. Mazda corporate claims this is not a known or common issue. No warning lights pick up this fault. I have since continued to come to a resolution, and will return to the dealership.
The manual transmission has a synchronizer failure. Safety was put at risk due to inability to safely complete a gear change reliably. The problem has been reported to the dealer and the transmission has been replaced once and is scheduled to go in 9/23/24 for a possible second transmission replacement. There are no warning lights associated with the failure. The only symptom is the inability to complete a shift with no warnings of this failure prior to it first presenting itself.
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.