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)

Happened at US 101 Southbound 0.1 MILES SOUTH of RENGSTORFF AVENUE. “Power Steering Malfunction” light came on, then suddenly after 1 second, the car’s steering went stiff and suddenly braked while at freeway speed flow of traffic. Car then sharply veered left into center divider due to automatic sudden braking with no control of the steering wheel

I have 205/45/R 17 on a car that I drive on short trips maybe once a week or two. Driving on the highway, the tpms light came on and the handling was instantly strange. I pulled over and checked the tire, the sidewall was blown out on the passenger rear. I had it replaced. Now about 2 months later, the right rear went flat after a trip. I took it to be repaired and was told that the sidewall was splitting and it could not be repaired. I am concerned that this may not be coincidence.

Vehicles rear windshield spontaneously shattered. Vehicle was idle and upon starting the vehicle a cracking sound was heard in the cabin and the rear view mirror was unusable as the rear windshield was entirely shattered into <1 inch pieces. Small pieces of loose glass had fallen from both upper corners of the windshield. The windshield is still attached to the vehicle and rear visibility is severely limited. No third-party inspections have been executed. There was no previous damage to the windshield and the car was idling when the failure occurred. There were no indications of potential failure before the incident.

AT 8300 MILES THIS CAR HAS DOZENS OF ROCK CHIPS IN THE WINDSHIELD, MOST OF WHICH WERE PICKED UP FROM DRIVING ON RELATIVELY CLEAN INTERSTATES AND SOME OF WHICH HAVE BEGUN TO SPIDERWEB. I BELIEVE THAT THE GLASS ON THIS VEHICLE IS ABNORMALLY SUSCEPTIBLE TO PICKING UP CHIPS FROM ROCKS WHICH WILL IN TIME CREATE STRESS RISERS AND CAUSE THE WINDSHIELD TO FAIL PREMATURELY. I TALKED TO A MAZDA REP AND THEY SAID THAT THERE WERE NO RECALLS ON THIS VEHICLE NOR WAS THE WINDSHIELD COVERED BY THE FACTORY WARRANTY. THEY DIRECTED ME TO TAKE MY COMPLAINT TO MY INSURANCE COMPANY. MORE PICTURES ARE AVAILABLE UPON REQUEST.

WHILE MAKING A RIGHT TURN, SUDDENLY LOST ALL STEERING WITH CAR GOING STRAIGHT ACROSS LANE. "POWER STEERING MALFUNCTION" WARNING LIGHT APPEARED, THEN STEERING RETURNED. "DSC MALFUNCTION" WARNING LIGHT REMAINED ON AND "TPMS MALFUNCTION" WARNING LIGHT REMAINED ON. IF THERE WAS A CAR IN OPPOSITE LANE, WOULD HAVE RAN INTO. ONCE CAR WAS RESTARTED, ALL WARNINGS DISAPPEARED. BRINGING INTO DEALER 5/11.