72 of the
7,584 complaints filed about the Tesla Model 3
are about the fuel system —
1% of everything owners reported.
The worst model year for it is 2018.
I was on the freeway in the fast lane approaching a tunnel and vehicle came with warning vehicle shutting down. Code DL_a063. Vehicle stopped in fast lane would not move to shoulder. No prior warning there was any issue. State police came and had vehicle towed. Lucky the car behind me was able to stop in time.
NHTSA complaint #11755831 — an unverified report by a vehicle owner.
BMS_a079 error. Battery is no longer able to charge. High voltage battery will need to be replaced. Basically rendering the vehicle useless unless the battery is replaced.
NHTSA complaint #11741063 — an unverified report by a vehicle owner.
Potential safety defect: high-voltage battery and battery management system (BMS) appear to overestimate available energy and remaining range, creating risk of unexpected 0% state of charge or loss of motive power without warning. Across 20 documented charge/discharge cycles between January and May 2026, the vehicle has consistently delivered approximately 135-150 miles of real-world range against an EPA-rated 310 miles, under routine driving conditions. The vehicle's own energy display shows observed usable energy averaging approximately 49.93 kWh -- approximately 66.6% of the rated 75 kWh pack. Tesla/BMS diagnostics report approximately 79-80% pack retention, implying approximately 58-59 kWh available -- approximately 8-9 kWh more than the vehicle's own consumption display reflects. No BMS fault code, low-power alert, or driver warning has been generated despite this persistent discrepancy. On April 22, 2026, after a drive, the vehicle was parked showing approximately 3% SOC and 7 miles remaining. Approximately five hours later, while parked and not being driven, the vehicle displayed 0% SOC and 0 miles. No fault or warning was triggered. Supporting photographs document the same low-SOC discharge cycle: vehicle at 27%/65 miles on April 20 and at 0%/0 miles on April 22. A driver relying on 3%/7 miles as a margin to reach a charging location could become unexpectedly stranded. If a similar BMS recalculation occurred while driving at low SOC, the result could be sudden unexpected loss of motive power -- a potential roadway safety hazard before the driver receives adequate warning. On May 14, 2026, Tesla Service performed a battery health review (Invoice 3000S0016915237) documenting 79% pack retention, no faults found, no further action. Test name, methodology, and whether the review evaluated BMS calibration accuracy or low-SOC energy availability were not disclosed.
NHTSA complaint #11738357 — an unverified report by a vehicle owner.
After the High Voltage Battery Contactor recall service, my 2025 Tesla Model 3 Performance suffered a sudden 13% drop in range (from 303mi to 264mi at 100% charge). An official Tesla Battery Health Test confirms the battery health is at 92% in less than a year of ownership. This degradation happened immediately following the recall procedure, indicating a hardware or software defect caused by the service.
NHTSA complaint #11728811 — an unverified report by a vehicle owner.
My 2022 Tesla Model 3 experienced a heat pump compressor failure at approximately 89,457 miles. Tesla Service Center diagnosed an internal failure in the heat pump system. The heat pump system controls cabin heating, windshield defrosting, and thermal management for the vehicle. When the system failed, the vehicle lost heating and proper defrost capability. This can impair windshield visibility during cold or foggy conditions, creating a potential safety hazard while driving. Tesla quoted approximately $3,000 to repair the compressor and declined warranty assistance despite the system being critical to safe vehicle operation.
NHTSA complaint #11721824 — an unverified report by a vehicle owner.
The vehicle is undriveable due to a high‑voltage enable safety lockout triggered by ECU identity/MAC mismatch after a software/update window; local service instructed me to ‘safely disregard’ active safety alerts contrary to vehicle telemetry, creating a safety risk. Chronology (key timestamps) • Jan 28, 2026 — Low‑voltage undervoltage precondition recorded (DIF_a018). • Feb 2nd, 2026 — Low‑voltage undervoltage precondition recorded (DIF_a018). • Feb 03, 2026 08:46 — Identity/MAC invalidation alerts (CP_a089 / CP_a077); HV‑enable blocked cascade. • Feb 24, 2026 — Service app: estimate approval prompt; supervisor instruction to ‘safely disregard’ active HV alerts captured via screenshot. • Feb 27, 2026 — Persistent handshake stall (CP_a066, State B1) despite ‘successful’ software job and new firmware update to patch the 2026.2 tree branch software. Vehicle remains grounded. Safety Concern Vehicle telemetry states HV contactors are blocked to protect the vehicle; service staff advised to disregard active alerts. Inconsistent guidance risks unsafe operation. I grounded the vehicle pending engineering review. Troubleshooting and A/B Tests My home EVSEs successfully charge a different Tesla (Model Y). The subject VIN charges at DC fast charging (Supercharger) and once on a third‑party EVSE, but fails on my two home EVSEs thereafter. This localizes the issue to vehicle‑side AC charge path/charge‑port logic rather than the EVSE. Request OEM to provide CP waveform under load + Toolbox logs. Please log this safety‑related defect; aggregate with similar complaints, and, if appropriate, open an investigation into identity/integrity faults causing HV‑enable lockouts and conflicting service guidance
NHTSA complaint #11721572 — an unverified report by a vehicle owner.
COMPONENT: Battery and Charging System SUMMARY: 2023 Tesla Model 3 Long Range lost 15% battery capacity (345→300 miles) in 2 months at 9,816 miles. Comparison vehicle shows this is a defect, not normal wear. DESCRIPTION: Vehicle: 2023 Tesla Model 3 Long Range, VIN: [insert VIN], 9,816 miles Defect: Between September 2025 and November 2025, displayed range at 100% charge dropped from 345 miles to 300 miles—a 15% loss in just 2 months. Evidence This Is A Defect: I own a second 2023 Model 3 (base model) with 66,680 miles that only dropped from 272→260 miles (4.4% loss). The Long Range with 7x FEWER miles has 3x MORE degradation, indicating a battery pack defect. Service Refusal: Tesla Service ran “range analysis” but refuses to test battery capacity or check for dead cells. Only provided scripted responses about EPA vs real-world driving, which doesn’t explain why my high-mileage vehicle has healthier batteries. Safety Concern: Rapid cell degradation may indicate failing cells, thermal management defect, or fire risk. Unpredictable range loss creates stranding risk. Request: Investigate 2023 Model 3 LR battery packs for systemic defects. Require Tesla to perform cell-level diagnostics and replace defective packs. Documentation available upon request.
NHTSA complaint #11717616 — an unverified report by a vehicle owner.
My vehicle has developed a rapidly worsening battery performance issue. It loses range far faster than expected, shows inconsistent energy usage, and experiences sudden drops in projected mileage even during normal driving. Charging behavior is irregular, and the vehicle’s energy regeneration is inconsistent. There was no crash, fire, or damage. Based on the symptoms, this appears to be a potential battery or propulsion system defect. The issue continues to worsen and affects the safe and reliable operation of the vehicle.
NHTSA complaint #11702593 — an unverified report by a vehicle owner.
I have been very cautious on charging my Tesla Model 3 and have followed all of the manufacturer's recommendations. The HV battery recently failed at 105,050 miles. South Korea has noted a battery reliability issue for this year car and model, so I am reporting this to you so if a recall is needed, you can track this. I believe my battery is a Panasonic NCA.
NHTSA complaint #11698493 — an unverified report by a vehicle owner.
Tesla suddenly lost power without any warning or a chance to move to safer area. Had to call 911. Incident around 5pm Oct 23rd 2025 at intersection of E Pennsylvania Ave and Wallace Rd, Dowingtown, PA
NHTSA complaint #11695350 — an unverified report by a vehicle owner.
I pulled up to a red light in a protected left turn lane. My car is set to use regenerative braking and hold/not roll once stopped. I felt my car roll forward a bit, which shouldn't happen when these settings are on. I quickly checked my rearview mirror, assuming someone had hit me from behind to cause me to roll forward. No one was behind me. I hit my brake and the car suddenly accelerated at full throttle speed, I would guess, into the intersection, despite the light being red for me. I quickly glanced down at my foot to confirm that it was on the brake pedal and it definitely was. I continued to repeatedly push the brake pedal down to no avail. I was steering and tried to navigate my way through 4 lanes of moving traffic because they had a green light. I hit the front end of a car, which didn't slow my car at all. I went on to hit another car's front end, which didn't slow my car at all either. My car then charged out of control to hit the curb on the opposite side of the street facing traffic. Hitting the curb stopped my car finally. I noticed that the airbags on the right side of my car were deployed. Components that failed/malfunctioned: brakes, fuel/propulsion system, speed control, automatic emergency braking, collision warning/avoidance, traffic signal detection Tesla Insurance has deemed the car a total loss. I also reported the malfunction to their Vehicle Support but haven't gotten the report or the data report from the car that I requested yet. I was told that the report would be complete by 8/7/25. The car was placed on a hold for the investigation, so it should be available for inspection. I do have the dashcam videos and photos of my car, if needed. This incident was terrifying because I had zero control of my vehicle due to the sudden unintended acceleration (SUA). I see on the internet that SUA is a problem with Tesla that has been reported repeatedly. It is a miracle that no one was hurt or killed. Tesla needs to address this immediately!
NHTSA complaint #11679584 — an unverified report by a vehicle owner.
Tesla failed to properly diagnose a high-voltage battery isolation fault in my 2018 Model 3. Despite safety-critical BMS_a027 and BMS_a142 faults indicating multiple isolation failures, they skipped required insulation resistance testing, falsely blamed sand in a connector, and charged me $174.95. After the issue returned, they reversed course, replaced an internal battery contactor, and reduced the $1,173 estimate to $356—admitting fault without owning it. Days later, a diagnostic showed dangerously low isolation resistance (380kΩ, far below Tesla's 1,000kΩ safety threshold), yet they took no further action. On July 12, the car again went into limp mode. Tesla’s repeated failure to follow safety protocols, diagnose accurately, and honor warranty obligations has left me with a vehicle in an unsafe state and no corporate accountability. I've contacted their Resolutions team three times (7/2, 7/7, 7/10) with zero response.
NHTSA complaint #11673763 — an unverified report by a vehicle owner.
En primer lugar decir que el VIN utilizado es completamente aleatorio. Esta notificación está dirigida para todos los fabricantes de vehículos eléctricos y fabricantes de baterías. Actualmente los diferentes medios de comunicación y redes sociales no paran de reportar incendios en las baterías de los vehículos eléctricos, con el peligro que esto representa para personas y bienes colindantes. Estos incendios están producidos en gran medida por la deformación que sufren las baterías a lo largo de su vida útil, con las cargas y descargas de las baterías, estas empiezan a hincharse, deformarse hasta que llega a un punto donde las celdas que componen la batería entran en cortocircuito produciendo los incendios ya mencionados. Existe un sistema ya patentado para controlar la deformación de las celdas que componen una batería, una vez que el sistema detecta el hinchado o deformación en las celdas que componen una batería, este puede detener la carga, carga por regeneración y impedir el siguiente arranque del vehículo poniéndolo en modo seguro. Adjunto presentación del sistema mencionado en el siguiente enlace: [XXX] Saludos. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11657066 — an unverified report by a vehicle owner.
1. The Power Conversion System (PCS), still in the vehicle and not available for inspection 2. 2 of the 3 controllers have failed, resulting in limited AC charging (16A out of 48A max). The PCS helps regulate AC and DC electricity and connects the 12V batter to the HV battery. If it fails, it could lead to dangerous situations since the electricity from the HV battery wouldn't be as controlled. I'm worried that if the final controller fails while driving it could lead to a loss of power. 3. Problem throws an error code when charging that the dealer has verified, they will not replace it unless I pay for the part+labor which is roughly $1,800. 4. Vehicle inspected by dealer, they will only fix if I pay for replacement part. 5. Car has warning message when charging.
NHTSA complaint #11652488 — an unverified report by a vehicle owner.
1. PTC Heater, old part is available for inspection 2. PTC heater failed while driving, experienced loss of power and slow loss of secondary electrical systems (the 12v battery was not able to recharge itself with the PTC heater not functioning). When attempting to restart car after pulling into a parking lot, the entire car died (12V battery was drained so it couldn't start up) and had to get towed to Tesla service center. PTC heater is critical for car to operate as it is closely linked to 12V battery. Additionally, without PTC heater car cannot defog windshield, resulting in potentially poor visibility. 3. Dealer replaced the defective part (PTC heater) and had to replace 12V battery as well. Was not covered under warranty and I had to pay the cost out of pocket. 4. Inspected by manufacturer and replaced. 5. Got warning signs about reduced power available, and secondary electrical features were limited.
NHTSA complaint #11652498 — an unverified report by a vehicle owner.
I sent following to Tesla I had an accident at around 6:30 PM on Sunday, March 2nd with my Tesla Model 3 and asking to see if you can conduct a diagnostic check into this incident. I was coming home at that time with the Tesla and about 100 yards from my house, I experienced a sudden acceleration with the car going from about 20mph to, I think, over 40 mph and crashed into the garage area of my house. Around the time I started experiencing that unwanted acceleration, I heard a whining sound. As it started that sudden acceleration, I checked below to make sure my right foot was pressing on the brake pedal and it was. Since I have the regenerative braking with my tesla, the car should have decelerated but, instead, it sped up. I continued to press the brake pedal but I could not mitigate my car’s continual acceleration. It eventually crashed through the lowered garage door and went through the right side of the garage wall about half way out and came to the stop. I was driving myself and not engaged in self-driving feature. I like to see if the Tesla has any resources available to retrace last few seconds and be able to glean more information of why that sudden acceleration might have happened. The car is still located in my garage but currently the car is disabled and powered off. The car’s power was on and it automatically turned on emergency light for about 30 minutes after the accident before it eventually powering off. I am also curious to know why none of the airbags were deployed in this accident. I have many photos available of the accident. The fire department and police came and assisted. I do not know if this matters but the couple of nights before the car had one of those over the air updates by Tesla and also about couple of minutes before the accident I drove through about a minute of hard rain in otherwise light rainy drive. I also wonder why auto-braking did not engage against the house.
NHTSA complaint #11646628 — an unverified report by a vehicle owner.
This happened on 2/18/2023. After I charged my car at a local supercharging station, I drove on the local roads for about 2 miles when the car started shutting down. I could barely steer, and the computer monitor stated that the brakes were turning off, and other parts, like cameras, were losing functionality. I pulled over into the local park. I was frightened that my car was no longer functional and that I could be in grave danger driving again. I tried to call Tesla but no one answered. I had to go through the app. My dad came and we found a Youtube video that said to walk out of the car to let it restart. Looks like it happened to another owner. We did that and the car started functioning again. Not sure why it did this after a charge. But it happened again 3 mos later when I was on the freeway. Luckily, I knew what to do from prior experience. But I am mindful of this whenever I supercharge my car. I wait after charging to drive. This shouldn't be the case and Tesla should tell people of this issue. I tried to tell Tesla service when I went in for another repair but they ignored my comments.
NHTSA complaint #11644199 — an unverified report by a vehicle owner.
Specifically when in somewhat cool and cold temperatures the Front Drive Unit is emitting abnormal high pitched sound that is intermittent at times and that is causing a distraction while driving and is very bothersome. Tesla acknowledged they hear it but nothing is being done about. Front Drive Unit should be replaced.
NHTSA complaint #11639791 — an unverified report by a vehicle owner.