111 of the
5,283 complaints filed about the Tesla Model S
are about the fuel system —
2% of everything owners reported.
The worst model year for it is 2015.
While I have not experienced this issue personally yet, it is highly possible that it affects all 2012–2020 Tesla Model S vehicles equipped with the large induction motor. The issue appears to involve a manufacturing/design defect that allows coolant to leak into the motor due to a failed seal. Once coolant enters the motor, it can short electrical components and potentially cause additional electrical issues. In many cases, the failure occurs without warning, immediately disabling the vehicle and potentially leaving the driver stranded without any notice. Tesla is fully aware of this issue, yet there does not appear to be a permanent corrective solution. Instead, owners can be faced with repair costs reportedly ranging from approximately $6,000 to $12,000, often involving replacement of the entire motor assembly. The affected seal is not an owner-serviceable component, nor is it something that can reasonably be prevented or maintained by the owner. In my opinion, this is an issue Tesla needs to take responsibility for. If the failure is the result of a design defect involving the motor’s cooling and electrical systems, Tesla should develop a permanent corrective repair or provide replacement motor assemblies at no cost to affected owners. As you know, coolant and high-voltage electrical systems are a particularly bad combination. A coolant intrusion failure can create more than just an expensive repair—it potentially creates a significant safety hazard and could result in injuries depending on the nature and severity of the electrical failure. I would also think that NHTSA has the ability to require Tesla to produce records documenting the number of failures they have experienced, investigated, and repaired. That information would be extremely valuable because individual owners have no way of determining how widespread the problem actually is. Tesla, however, has access to its own service and repair records and should be able to provide meaningful data on the
NHTSA complaint #11757258 — an unverified report by a vehicle owner.
On 6/11/26, around 2:10 pm, when i was slowly pulling over to park on a road side, the car suddenly rushed forward unexpectedly. It was so powerful, at the time I could only hear the panic reactions from the two passengers and sense the imminent collision with the parked bmw in the front of several car length away. Right before the collision i steered the wheel to the right to avoid the bmw and my car came to violent halt less than a foot next to the bmw. I came out of my car to check the tire position before backing out to park a bit behind. This was on a country road, a Thursday afternoon with not much traffic. There was no distraction. If not were the enough spacing i would have no doubt crashed into the bmw in the front. When the dust settled, I did a "power off" reset to the model S and drove the rest of the day normally without any incidents. I went to Tesla service center near where i live the next morning, 6/12/26, to report it. They asked the precise time the incident occurred. But did not inspect the car. I was told an inner inquiry will be opened and it would take at least a few days. They said i could continue to drive the car normally which i have not because of not knowing what had caused it. I went to the service center today 6/29/26 after more than two weeks of no feedback. I was very disappointed in the answers given. The guy said basically based on the design of the car the incident could not have been caused by the car ,without providing any info as to what had been found from the promised inquiry. There was no written report on this. The person offered to check the brakes but also said he did not think its necessary. Just to made me feel better he said. At last, he provided the tesla web site to request "private data" during time window of the incident. I told him i will seek help from NHTSA now that tesla is not. I was told by AI, tesla has collected data on every car they sold to the details that can reveal how the paddles were pressed.
NHTSA complaint #11747285 — an unverified report by a vehicle owner.
While driving my 2013 Tesla Model S at normal road speed, the vehicle suddenly lost all propulsion without any warning. I had to coast and maneuver across traffic to avoid being hit before the car came to a stop. After shifting into Park, the vehicle displayed DI_w072 and DI_f072 gate‑drive faults, which indicate inverter/drive‑unit failure and match a pattern reported by other early‑model‑year Tesla owners. This sudden loss of motive power created a serious safety hazard, including risk of rear‑end collision and exposure to oncoming traffic while disabled. • No alerts appeared before the failure • Fault codes appeared only after the vehicle stopped • Vehicle required towing • Incident occurred under normal driving conditions • Tesla has denied responsibility or involvement It was serviced by Tesla a couple days before. During servicing they stated on one side the drive axle was not completely installed upon arrival. They stated they "popped it in for free but the drive unit will likely need replacement soon." Prior to this visit i have had no issues or alerts with these parts or systems, I declined any work to these areas. The next day after receiving my vehicle back, I discovered the coolant reservoir was completely empty. No warning was provided that the coolant system had been left unfilled, and the lack of coolant may have contributed to thermal damage in the drive unit or inverter. They denied any work they did involve these parts and denied any responsibility. They denied my request to have the car towed to their service center and diagnose it unless i paid for it. They also estimated the repair to cost me 6k without any further investigation. I request that NHTSA evaluate whether this failure mode represents a broader defect affecting 2012–2015 Model S drive units/inverter electronics and whether further investigation or recall is warranted.
NHTSA complaint #11741781 — an unverified report by a vehicle owner.
Following a coolant rapid mate replacement performed by an authorized Tesla service center, the vehicle experienced a complete shutdown on a public road the same evening it was returned. The high-voltage cooling system was not properly purged of air following the service. This caused low coolant flow to the rear drive unit during a 63-mile drive in record heat. The fault cascade included a HIGH VOLTAGE ISOLATION FAULT (BMS_f123), drive inverter warning (DI_w126), and multiple battery management warnings. The instrument cluster displayed a red emergency warning: "Vehicle shutting down — PULL OVER SAFELY." The vehicle required towing. The failure was confirmed by the service center's own follow-up invoice, which documented "trapped air pockets in the coolant system following the most recent service" as the cause. The corrective repair was performed at $0 as a Goodwill service — the service center's internal acknowledgment of liability. The service advisor made a written text admission of causation the following day, then retracted it in a recorded phone call. Both are preserved. No post-repair Isolation Resistance test results were provided. The HV isolation fault may indicate latent thermal damage to HV insulation that could cause a safety failure at higher mileage outside any remaining warranty. The vehicle is available for inspection upon request.
NHTSA complaint #11741500 — an unverified report by a vehicle owner.
While driving in traffic, the vehicle displayed warnings stating “Unable to drive — Pull over safely.” The vehicle progressively lost power and became unable to propel itself, requiring me to stop in traffic. Additional warnings indicated reduced acceleration and performance. The vehicle remained powered (screens and electronics active) but could no longer drive. Tesla later diagnosed a high-voltage battery failure and provided an estimate for full battery replacement. The sudden loss of propulsion in traffic created a safety hazard because the vehicle could not accelerate or continue moving with traffic.
NHTSA complaint #11720093 — an unverified report by a vehicle owner.
This is a supplemental filing to my prior NHTSA complaint (#11697718) regarding a high-voltage isolation fault and shutdown risk. The vehicle displayed warnings including “vehicle may shut down during driving,” “may not charge,” and repeated BMS isolation fault messages. It became inoperable at a public charging station. The manufacturer confirmed isolation faults in the drive unit and the A/C compressor. Their own service notes stated that the vehicle “may shut down during regular driving” and that charging “may not be safe.” Despite this, the vehicle was left at 0% state of charge for an extended period and then charged by the manufacturer. They later stated to a regulator that the vehicle was “trickle charged at 1 amp for 6 hours,” but the vehicle’s range increased by approximately 100 miles, which is not physically possible at that charging current (1 amp at 240V for 6 hours = 1.44 kWh ≈ 4–5 miles). This discrepancy suggests the vehicle may have been charged at a higher rate than claimed and without proper cooling, despite the documented A/C failure that is necessary for battery thermal management. Battery condition is unknown because the manufacturer refused to perform or provide a battery health analysis, isolation resistance values, thermal logs, or charging session data. The safety defect could not be verified as repaired. While this safety issue remained unresolved, the manufacturer rejected a Tesla roadside tow arranged under regulator instruction to second service center and instead arranged an unauthorized tow to remove the vehicle from their facility without my consent. The vehicle was taken to a non-manufacturer storage lot while still in an unsafe state. I am concerned about: • high-voltage isolation faults, • shutdown risk during driving, • unsafe charging performed by the manufacturer, • possible battery damage from low SOC and charging without A/C cooling, and • mishandling of an active safety defect. The vehicle is available for inspection.
NHTSA complaint #11701872 — an unverified report by a vehicle owner.
After a high-voltage junction box repair performed by Tesla, the vehicle shut down 15 miles after leaving the service center. Tesla replaced the high-voltage harness at no cost but provided no explanation. After the HV harness replacement, new proximity/sensor alerts began triggering that were not present before their HV work. Multiple reasonable diagnostic procedures were refused, including bench-testing the sensors. Tesla is pressuring me to take possession of the vehicle without providing written confirmation that it is safe to operate following the HV system failure and subsequent replacement of HV components. I am concerned the vehicle may have unresolved high-voltage or wiring issues that could pose a safety hazard.
NHTSA complaint #11701015 — an unverified report by a vehicle owner.
was driving Tesla when warning light appeared “ charging declined “ . drove car home battery no longer charging . Tesla stopped working after only 68,000 miles . Tesla wanted $15000 to replace the battery more than the car is worth.
NHTSA complaint #11686650 — an unverified report by a vehicle owner.
The drive unit was leaking coolant into the electrical inverter space. The issue was verified by a mechanic who then repaired the drive unit to prevent additional coolant intrusion.
NHTSA complaint #11636513 — an unverified report by a vehicle owner.
As I approached a red light with a car in front of me, I took my foot off the accelerator to use Tesla's regenerative braking, but instead the car rapidly accelerated and crashed into the car in front of me. It seemed like unintended acceleration.
NHTSA complaint #11630866 — an unverified report by a vehicle owner.
Overnight while plugged in and after the battery showed it was fully charged, the battery suddenly lost charge, and the car sent repeated alerts to immediately pull over and stop driving. A notice on the car showed mileage was reduced and to immediately schedule a service call. After returning home, I downloaded to the car a recent software update that cleared the error. However, after the software upgrade, Tesla messaged that they did removed tests and the high voltage battery must be replaced.
NHTSA complaint #11613809 — an unverified report by a vehicle owner.
Received and OTA notice on the dashboard that states "Battery Fuse replacement" is required. The fuse is due to a Li-ion battery that wears out for a safety system. Life expectancy of the battery is 10 years. It has not lasted 8 full years. This is stated as a safety issue and Tesla has since redesigned this item to not required the batteries. I have alerted Tesla about this issue, have not had a reply, as yet. The vehicle can be operated without this safety device, which seems inappropriate. I feel this should be replaced under warranty and/or recall - but it appears Tesla will want to charge an excessive amount of money.
NHTSA complaint #11594757 — an unverified report by a vehicle owner.
The component that Tesla has stated is the part that is failing is the MCU (Media Control Unit) which was a recalled part at one point but then Tesla decided to replace only a single part of the MCU which was the eMMC (embedded MultiMedia Card). Luckily the vehicle was not driving when it completely shut down and would not start back up but I was stuck in a restaurants drive-thru for roughly 4 hours till I could get a tow truck to come tow it. The tow truck had to put the car on dollies as the vehicle would not enter tow mode nor would it enter its emergency neutral mode so the vehicle could be moved. The windows would not go up or down and luckily the trunk was able to open because if not then I would have been stuck outside my vehicle as the door handles did not come out after I got out of it and closed the door behind me. Please read the messages from the tech as you will see that they tried to act as if they did not know what was going on with my vehicle but then i asked something else and they stated exactly what the issue was but supposedly could not confirm it was that unless they charged me a diagnosis fee and "got hands on" which I'm sure that info of what was wrong with my vehicle was nothing they needed to get their hands on. There were no warning lamps or messages UNTIL the vehicle shut off on me in the drive-thru and then the warnings started to populate staying that the vehicle was off, vehicle could not detect brake being pressed, and that the vehicle was not detecting the key. The repair estimate is no longer available in my app for some reason, probably because I did not repair the vehicle as they were wanting me to upgrade to the new MCU that is in the current vehicles and it would have been roughly $2,400.00. Just today, the vehicle would not start, would not move my seat or anything to its memorized position when I got in the vehicle and the screen was frozen, just as it did when the original recall happened of the MCU/eMMC, photo/videoattached.
NHTSA complaint #11583917 — an unverified report by a vehicle owner.
The Model S, which was bought in 2015, had a sudden acceleration while I was trying to park near the entrance gate of the parking lot. The accident happened on May 25, 2023. Fortunately, nobody got hurt and the car was totaled. I feel strongly that this should be investigated, as this can be a very serious public safety issue. It was inspected by the insurance company. There were no warning messages prior to the failure.
NHTSA complaint #11560001 — an unverified report by a vehicle owner.
Sudden unintended acceleration appeared to cause the Tesla while parking the car on the street in front of home accelerate go out of control and crash into the home totaling the car and damaging the house. Two days prior the vehicle was brought into a Tesla service location where Tesla replaced the 12 volt battery that they believed was causing the car not to power on properly at that time. After the crash and googling to see if others suffered similar issues it appears the NHTSA recently reopened a review of sudden unintended acceleration and this incident seems to align with concerns of the petitioner [XXX] . The police filed a report and it’s at the towing place where the insurer Allstate is going to evaluate the car for a total loss. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11558021 — an unverified report by a vehicle owner.
Driving the vehicle and all of a sudden all these warning lights came on. The dash flashed warning signs stating: "Power reduced - exiting and entering the vehicle may restore operation" "High voltage battery requires service - Acceleration and charging performance reduced" and a turtle sign appeared. The vehicle was almost inoperable moving at 1-2 mph. Pulled into a parking lot, parked the car, and exited the vehicle. After reentering the vehicle the error continued. Had the vehicle towed to the Tesla service center. It is currently being diagnosed. An online search showed many Tesla forums with similar issues and there were suggestions to report the incident because there no consistent resolution that has been provided by Tesla thus far - issues range from 2020 - 2023.
NHTSA complaint #11549787 — an unverified report by a vehicle owner.
While driving at midnight, I pulled away from a stop sign in a residential neighborhood, and hear a loud bang. The dash display turned red immediately, and the car lost all propulsion. The dash display said "Pull over safely, Vehicle shutting down." My phone app also showed a message of "Your car suffered a failure and will no longer drive. Contact Test Roadside..." I coasted to the side of the road. While calling Tesla Roadside assistance, within 15 minutes of the breakdown, the center display said "Low voltage energy remaining = 30%" and a few minutes later the entire car went dark. The doors, windows, trunks, glovebox, center screen, tow mode, and the hazard flashers no longer worked. The tow truck driver said he has seen this problem a lot and based on my description, he correctly diagnosed a failed inverter, which was Tesla's diagnosis. I searched online user forums and found many other people having the same catastrophic failure in new Tesla's. It's incredibly dangerous to lose all forward power. This is a new car with only 5K miles. And to lose all accessory power within 15 mins so not even the safety hazard flashers work is terribly dangerous.
NHTSA complaint #11547897 — an unverified report by a vehicle owner.
My MCU (onboard computer system) glitched out and the screen began flickering. I lost all of the Advanced Driver Assistance Systems, navigation, music, phone link, sunroof venting, climate control, including defrost. The screen froze and I had no functions. This has happened 4 times, possibly a 5th time, while driving in the last 6000 miles. I put in a service request to Tesla and they ran a remote diagnosis, and told me that the old MCU1 is overwhelmed by the new software updates. Their solution was for me to upgrade to the newer MCU2 at my cost. I am afraid to drive my car as it will malfunction while I need the safety features, like basic defrost or AC in the 105 degree heat in Phoenix. Tesla acknowledged that the previous MCU1 failure due to the eMMC chip was a recall, but this is a new problem that has not yet been acknowledged by Tesla as a recall problem.
NHTSA complaint #11526350 — an unverified report by a vehicle owner.
Explained to Tesla service center immediately upon purchasing vehicle while it was still under warranty that the vehicle range was unacceptable using TESLA's warranty guideline for requirements for a battery replacement while under warranty. TELSA refused to changed the battery even though I took the vehicle to TESLA several times while the Battery was still under warranty. A month after the warranty expired the motor died, it had been showing signs wear but TESLA failed to property inform me of the issue and charged me over $6000 for the repair due to my lack of knowledge on what the symptoms are for a failing motor. Shortly after the warning for "Charging - Maximum battery charge level reduced" has come on and TESLA is trying to charge me about $21,000 for a replacement battery.
NHTSA complaint #11511655 — an unverified report by a vehicle owner.