There are 3 stored owner reports matching the electrical system leading-label group for the 2002 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 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2002 MAZDA MIATA. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SUDDENLY SHUT OFF AND COULD NOT BE IMMEDIATELY RESTARTED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE IMMOBILIZER MODULE ERRONEOUSLY ACTIVATED AND DISABLED THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE LOCAL DEALER AND MANUFACTURER WERE NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 151,700.
THIS CAR HAS A SAFETY IMMOBILIZER THAT PREVENTS CAR FROM RUNNING IF THE CORRECT TRANSPONDER KEY IS NOT USED. THIS CAR HAS ONLY 28,000 MILES, OF WHICH I HAVE DRIVEN THE LAST 10,000 MILES. THIS WEEK THE IMMOBILIZER CONTROL ELECTRONICS FAILED, RENDERING THE CAR TO STOP RUNNING AND WILL NOT RESTART. RESEARCHING ON THE WEB IT APPEARS THIS WAS A PROBLEM WITH MANY 2001 AND SOME 2002 MODELS. FIRSTLY THIS FAILURE IS A SAFETY ISSUE. SECONDLY THE REPAIR REQUIRES REPLACING THIS IMMOBILIZER MODULE AS WELL AS THE MAIN ECU AND GETTING NEW TRANSPONDER KEYS, WHICH IS VERY COSTLY.
SPEEDOMETER ON 2002 MAZDA MIATA FAILS INTERMITTENTLY. MAZDA REFUSES TO REPLACE EVEN THOUGH UNDER WARRANTY. *NM
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.