2026 Tesla Model Y Powertrain & Transmission Problems

I am reporting multiple safety-related failures with my Tesla Model Y, purchased December 18, 2025. Within four months of ownership, the vehicle has experienced escalating issues: On April 19, 2026, while driving approximately 70 mph on a freeway in heavy rain, the vehicle suddenly lost power and decelerated to approximately 20 mph. Multiple safety systems became unavailable simultaneously, including automatic emergency braking, traction control, stability control, and vehicle hold. I was able to pull to the side of the road, but the vehicle would not restart and required towing. This created a dangerous situation and significantly compromised my ability to safely control the vehicle. On April 9, 2026, a rear seatbelt unlatched under braking while in use. This is a serious safety concern, as the passenger was not properly restrained and had to brace themselves. On February 10, 2026, the vehicle experienced repeated software failures causing lockouts. In one incident, I was locked out while my [XXX] child was inside the vehicle. On January 2, 2026, the vehicle required service for a cracked window shortly after delivery. The vehicle has been taken in for service multiple times, and although repairs were performed, new and increasingly serious failures have continued to occur. I am concerned about the safety of operating this vehicle, particularly due to the loss of power at highway speed and failure of safety systems. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Date of Incident: December 8, 2025 Mileage at Failure: Approx. 580 miles Vehicle Status: At Tesla Service Center since December 9, 2025 (no repairs started; status shows “Preparing”) Failure Summary While driving 40–45 mph on a busy three-lane road in California, approaching a signalized intersection, the vehicle suddenly displayed multiple red warnings, a “Reduced Speed” alert, and numerous fault messages. Within 3–5 seconds, propulsion was completely lost. Incident Details Using residual momentum, I steered across two lanes into a nearby retail parking lot. The vehicle stopped at an angle, partially obstructing traffic. Towing Delay & Safety Risk The vehicle remained stranded for 4 hours. A flatbed tow arrived 2 hours later but could not load the vehicle due to inoperative Tow Mode. A second dolly-equipped tow truck was required, adding 90 minutes. During this time, the vehicle continued to block traffic and posed a safety hazard. Component/System Failure Complete propulsion loss and failure of major electrical/control systems, including doors, frunk, trunk, Tow Mode, and non-responsive key card and phone key. Vehicle remains inoperable. Safety Hazard Sudden shutdown in a center lane near a major intersection left almost no opportunity to maneuver safely. Extended roadside immobilization and inoperative Tow Mode further increased risk. Warning Prior to Failure None, except 3–5 seconds of simultaneous red warnings and fault messages. Problem Status Ongoing and unresolved. Tesla has not diagnosed or repaired the vehicle and continues to delay the estimated repair date. Inspections Vehicle is under evaluation at Tesla Service Center. No repairs, police, or insurance inspections have been conducted.

I am genuinely concerned about the risk of my 2026 Tesla Y catching fire and/or being trapped inside the vehicle leading to death. In the past 30 days, have seen several accidents in Tesla products leading to fires with people trapped inside ultimately perishing. This includes the North Miami crash on 10/01/2025. No one in my family will travel inside this 2026 Tesla Y due to the fires. They have begged me to stop driving. I purchased this vehicle based on the published safety records including by Tesla. My wife just started cancer treatment and the intention purchasing was for a safe vehicle. Due to my very real concerns, I cannot risk my children being orphaned.

Our new Model Y with only 302 miles lost driving power, reported a high voltage problem, and shutdown in the middle of the street. Within an hour Tesla towed it to the repair center. The next day we picked up a loaner. Throughout the ordeal the Tesla staff have been very friendly. They only needed two days to make the repair. Here is what the technician wrote in the Tesla app. With the vehicle on site found it unresponsive and unable to drive. Towed the vehicle in and pulled vehicle data. Found numerous alerts for contactor power supply being undervoltage. Performed and exhaustive inspection of the right main harness. Found the contactor power supply wire to have a short to ground in the harness. Continued inspection and found the harness to have rubbed through the harness at the right rear c pillar area. Removed the wires and rerouted to prevent damage. Rewrapped the harness and added foam to prevent the issues from returning. Performed a test drive and verified the vehicle is back to working order with no alerts or issues.

My 2026 model Y won't stop on the road when I released the gas paddle and even i felt it speeded up a little bit at 35 miles.it put me, my [XXX] daughter and other's safety at risk. I hit on the brake and feel need to hit harder abnormally to slow the car not even mention to stop the car. It took me long way to stop the car. At Once I stopped the car, it tried to speed up and I hit the paddle again. right after, then it tried to rocking back and forth and vibrated finally stopped. I tried serval time to repeat the issue it still exits. and I called Tesla customer service. they haven't look at it yet. but I in the service mode here is the some components are malfunctioned. 1. Rgenerative braking backfill, braking pedal torque is unavailable. 2. Traction control setting is unavailable. 3. DI_Brake torque is invalid. DI is Drive interface. 4. HOLD stopping mode is unavailable. there is no any warning showed in the console before and after the issue happened. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)