2024 Tesla Model 3 Acceleration Problems

Owner reports

Selected complaints filed with NHTSA by 2024 Tesla Model 3 owners, lightly cleaned up (personal details are redacted by NHTSA).

I was in a drive thru of a fast food restaurant and the car rapidly accelerated on its own and crashed into a wall. The air bags deployed and we were injured. We also narrowly missed hitting a pedestrian. The car hasn't been inspected by anyone yet, however it is available if someone wants to inspect it.

Component/system that failed: Tesla Full Self-Driving (Supervised) software version 14.x (2025.38.x and later). The issue is software-only and remains installed on any vehicle updated to v14. Description of safety defect: FSD v14 deliberately removes the driver's ability to set or adjust maximum speed offset using the right scroll wheel (feature present in all prior versions including my current v13.2.9). As a result, the system routinely exceeds posted speed limits by 5-20 mph with no way for the supervised driver to correct it short of fully disengaging FSD. The vehicle ignores speed-limit signs, relies on inaccurate map data, and follows surrounding traffic speed instead of the legal limit, even in school zones, construction zones, residential areas, and adverse weather. This significantly increases risk of collision, injury, and traffic citations. …

Driver set cruise control has FSD imbedded that causes the vehicle to slow down drastically on its own. The car has brake tested several following vehicles so far. I've seen this before many times of other Teslas but thought it was the driver and now I know it was not. This causes a chain reaction of braking and smoking tires. I am positive this has created accidents but the ones involved have no idea how it started many vehicles ahead. The lane keep assist pillar cameras do not work in the dark, this has taken me by surprise already. The phantom braking on highways is awful, it is so bad that I am afraid to drive in the winter. The torque of the wheel sensor is not safe, when auto steer disables it can take you by surprise causing you to swerve into on coming traffic. …

On October 16, 2026, my 2024 Tesla Model 3 initiated a standard, factory-prompted over-the-air (OTA) firmware update. During this automated install process, the car's firmware crashed. Following the crash, the vehicle was left unresponsive. Tesla Service conducted a diagnostic review and isolated the problem to a physical failure of the internal hardware: Assembly - Power Conversion System - 48Amp - 1Phase. The vehicle was performing flawlessly and charging efficiently prior to the software update execution. The PCS module did not break due to driver abuse, mechanical wear, environmental damage, or physical aging. It failed strictly because Tesla's proprietary software update process overtaxed, corrupted, or bricked the internal semiconductor boards during a forced rewrite command. …

This is the 3rd or 4th time I have observed sudden unexpected acceleration when at a full stop at a light while using FSD Supervised (v13.2.7 just updated). It first happened 2 or 3 times on FSD v13.2.6 when mine was the lead car at stop lights. This time I was at a stop light but obviously not the lead car. The truck in front of me was blocking view of the traffic lights. Each time, I have hit the brakes immediately, so I don't know if the vehicle would stop on its own during these situations, but I have no issues with it safely braking at any other time. Other than this intermittent glitch, FSD has been flawless on the HW4 next generation computer, which may lead to driver complacency not expecting this. I am reporting for awareness & hopefully correction. I have MP4 video files of the incident, but I cannot upload them here.

I have my phone mounted to the back of the computer screen, and I also have the phone power cord running from the center console 12V plug up to my phone. I have found that if the power cord comes in contact with the computer screen, it can inadvertently put the car in Neutral (it acts like a finger touch). This could be extremely dangerous if, for example, the car is making a left turn in front of oncoming traffic and the car unexpectedly goes into Neutral. I think consumers should be aware that a phone power cord can cause changes on the computer screen if there is contact, especially if it switches the car to Neutral.

There is a a very dangerous software issue with new Tesla models where there is a 1-2 second lag between when cruise control is disengaged and when it actually disengages. Especially, at high speeds this is dangerous because the car can continue maintaining acceleration for several hundred feet against driver controls. I've had to slam on the breaks several times because of this. This is not a glitch, and this is not unique to my tesla. It's a known issue reported by the community that needs Tesla's attention.

Cruising at 75 the speed suddenly drops to 55, the worst I had was changed from 75 to 40. This is Dangerous and needs to be changed. It drops speeds every day and before I can correct it the car usually drops a minimum of 5mph. If allowed I will start to report this every day until it is corrected as it is a huge safety issue for other drivers and potentially a deadly crash or road rage incident.

While using Traffic Aware Cruise Control the vehicle would rapidly decelerate with no warnings of potential collision and with no actual emergency situation existing on the road. In a single trip that spanned both day and night there were three rapid declaration events occurring both when light or dark outside. Vehicle display wouldn't show any messages as to the reason for declaration.

I reduced my set standard cruise control speed when traveling on a road curve and the speed drastically reduced by over 15mph lower than my setting on it's own. If i was traveling in a group then this would have created a dangerous situation for the following vehicles. This is another FSD/Beta programming in regular cruise control. Why are you still allowing this to exist???

Acceleration complaints in other Model 3 years