general problems of the 2018 Tesla Model 3 - part 1

Repeatedly and randomly, with cruise control (not fsd) engaged, the car would brake, sometimes aggressively. The last time, it braked so hard the tires or brakes squealed and the car swerved slightly before I was able to regain control. This was on the freeway (in colorado, if I remember correctly) while I was cruising at 70 or 75 mph. I decided that that was the last time I would use cruise control; it was just not safe. I had an appointment on October 22 to take the car in for service. But then a friend told me this was called "phantom braking" and that there was no fix. A friend suggested that I contact the NHTSA.

The brake lines badly rusted creating safety hazard as Tesla service reported when working on other maintenance. Not a warranty issue not covered as repair is over $3800. Vehicle was not abused and was kept clean regularly - this seems to be a vehicle defect if the brake lines can get moisture trapped behind the battery pack and create excessive corrosion requiring brake line replacement.

Main incident: time: 2025-08-28 ~12:41 pm pst what happened: after searching for a parking space, the driver was preparing to reverse into the spot, the driver pressed up the stalk to shift the gear into reverse, a sound was heard and something showed up on the screen, the vehicle once again started accelerating and running forward suddenly and sharply (3 mph to 28 mph in 3 secs), driver tried to steer the vehicle away from cars and buildings to minimize danger, the car rushed onto a concrete curb, hit one blue Tesla, then hit the side of a concrete utility pole, and ran over a plant and last crashed into the chain-link french before it finally stops injuries: * spine pain for one passenger damages: ** all tires blown out, tire falls off ** severe damages throughout the vehicle body * one Tesla parked on the parking lot was severely damaged * the utility pole's base box was scraped and deformed * one plant was knocked down similar case 3 few mins ago: time: 2025-08-28 ~12:38 pm pst what happened: the driver entered a oneway parking lot, but found no available spot and was trying to back up, the vehicle suddenly accelerated on its own. The driver performed an emergency brake and stopped the vehicle. At the time the vehicle stopped, it was only about 20 inches away from two cars in front of it injuries and damages: none what component or system failed or malfunctioned, and is it available for inspection upon request? malfunctioning of the electronic control or braking system leading to abnormal acceleration conflicting gear shifting and autopilot engagement design the right stalk is used to both shift gears and engage autopilot features, this design makes it very easy for the system to confuse the two actions autopilot feature safety issues autopilot features (whether its fsd or cruise control) should not be allowed to initiate abrupt acceleration to a dangerous speed in a low speed area (for example parking lot) insurance claim filed, number: 25-647243342.

All 4 brake lines (tubes) from either from abs or brake booster pump are corroded and pierced. All brake fluid leaked front center of the vehicle and lost all brake. Brake lines or tubes are looks good from under the front and back tires. It looks like a quality of the brake lines / tubes from abs to the bottom are not meeting the expected quality.

My Tesla got stuck in a mcdonald's drive-through because the epb (electronic park break) refused to disengage. I believe it got stuck as the vehicle was pulling up to the window to pay and I had to reach out with my phone to tap their payment terminal to use apple pay. Then the park brake engaged I believe because I possibly lifted up from my seat, yet had my foot on the brake, but when I put it into drive, it refused to disengage. So my car got stuck for about an hour until we force skidded it out of the drive way. Now I've been stuck at this mcdonald's parking lot for days, unable to drive it to get repaired or charged. Tesla temecula refuses to schedule service and canceled the service appointment. Other further away Tesla service centers want to charge me hundreds of dollars for diagnosis that I don't have. This is the 2nd time the park break got stuck. The other time was in hospital ambulance er drop-off bay. This is a major safety issue and the NHTSA should do a safety recall on this to force Tesla to fix it. It's both a software and hardware engineering issue. Yet Tesla keeps placing the blame and cost on customers to profit from their faulty engineering testing. Please help me and Tesla customer fix this!.

On December 24, 2024 I was driving on freeway 5 south and all of the sudden my vehicle came to an abrupt breaking without any reason. The traffic ahead of me was of normal traffic. This abrupt breaking happened twice within 5 minutes of time span. I have notified Tesla service center and the service center gave me a quote of $137. 50 for diagnostic and to schedule the service. I felt that this issues should be taken care of by Tesla with no charge to me. This is a safety issue. I have experienced the abrupt breaking issues with my vehicle on many occasions since I own the vehicle in 2018. Each time I was told there's no problem with the vehicle when I notified Tesla service center.

I was at a stoplight behind a Toyota tacoma. I must have stopped around 8 feet behind it. I was not using fsd and I was not one-pedal driving. My foot was on the brake. I must have been at a complete stop for approximately 10 seconds when my Model 3 suddenly accelerated full throttle on its own and rear ended the tacoma, directly hitting its trailer hitch, causing my car's driver-side airbags to deploy. When it happened, the light was still red and my foot was still on the brake. I never touched the accelerator. Luckily I was driving alone. After the inital contact, my car sort of bounced off of his hitch then slowly lurched forward before it stopped. After that, it was immobile, leaving me stuck in traffic until it was towed away.

Two incidents while testing the most recent version of Tesla's "full self-driving": 1. While driving at less than 25mph in a residential neighborhood, using the "full self-driving" mode, the car was entirely unable to detect either heavy steel plates in the road (being used to cover road work) or significant potholes in the area near the plates. 2. While driving on h1 (a federal "interstate" highway) on oahu, at approximately 55mph, using the Tesla's "full self-driving", the car inexplicably slammed on the brakes. There was absolutely nothing visibly in front of the car for at least 200 yards. The car behind me had to swerve to avoid rear-ending my vehicle.

I was driving (~42 m/h) my Model 3 Tesla on a freeway and the traffic in front of me suddenly slowed down. The driver in front of me (she was a new driver with a new car) braked hard and came to a complete stop even though the traffic in front of her was moving. I ended up colliding with her as a result. I would have expected the Tesla forward collision system or the automatic emergency braking system to have activated and prevented this crash. Further, it seems Tesla brakes behave differently when it is fully charged as the engine braking does not engage. In fact the car seems to accelerate instead. If the Tesla forward collision system and the aeb do not work and prevent such accidents, what is the point of having these systems?.

Seems that when brake pedal sensor can trigger a "pressed" reading when not actually being pressed. The only way to turn off the car manually is defeated by, you guessed it, depressing the brake pedal. This causes the vehicle to remain on and unlocked. Even if you are able to leave the vehicle in a locked park state, at any point, the sensor can register a "pressed" reading and essentially unlock and turn on the vehicle. I see this as a extremely serious safety issue. The issue seems to occur randomly at first and then more frequently. It can be confused with a known seat sensor issue which seems to also cause the same symptoms.

While driving on the highway with fsd on, the car severely amalfunctioned with sudden deceleration at 4 separate ocassions. At 68 mph when changing lanes, the car suddenly decelerated. There were several cars behind us and it could have been a major multi car collision. At all 4 ocassions, I immediately took over control on steering and acceleration, thus avoiding any accident. This problem has not been reproduced or confirmed by a dealer or independent service center yet. My vehicle or component(s) have also not been inspected by the manufacturer, police, insurance representatives or others yet. Additionally, there were no warning lamps, messages or other symptoms of the problem prior to the failure.

I was parked on a flat street and got in my car and began driving. I went one city block at a slow pace because cars were stopped ahead. I pressed my brake pedal and it went all the way to the floor with no tension or braking. It was “floppy”. I was able to stop in the road (in traffic) and since it was a quiet street I decided I should try to reboot the car (thinking maybe it was a software glitch). Luckily only 2 cars passed me as this was happening because even the hazard lights go off during a reboot. Once the car was started up the brakes felt tight again so I drove another block, still going under 20 mph. At the next intersection the brakes stopped working again and were “loose”my foot would go all the way to the floor with no effect. I saw a space at the corner to pull into (not a legal parking space but my car could fit so I could pull out of traffic). The regenerative brakes worked and I rolled to a stop. I called Tesla. They agreed the car was not safe to drive and asked me to tow it to them. They worked on the car for about a week and half. They told me the hydraulic control unit failed and was replaced. They said the unit is in a protected area and did not fail because of impact or because of my breaking habits. They said it is possible that it might just fail overtime. But there was no warning, light or indicator that it was failing, and the brakes just stopped working suddenly it could’ve been much worse. If I had parked on a hill that day or made my way to a freeway this would have been a very different story. I can’t believe that brakes can fail like that with no warning at all.

The adaptive cruise control (autopilot) suddenly applied the brakes while I was traveling about 70 mph on a major interstate highway. There was no reason for the sudden and rapid braking. No obstacles of any kind. I suspect the autopilot was confused with the shade of the road from asphalt to concrete as I approached a small bridge. Software version on the vehicle is 2023. 38. 6.

I was traveling about 10-15 mph and my car unexpectedly activating the automatic emergency braking system. It was very scary and dangerous.

The brake lines rusted out and caused the brake to go out while my wife was driving with our newborn baby. The car is not even 5 years old. I have read of other cases of this happening.

When driving using full self driving or autopilot, the car unexpectedly and suddenly brakes as if there is something on the road which is in the way even though there is nothing there. On one trip of 260 miles, the car unnecessarily braked twice on the freeway. Had someone been following too closely to me it could have caused a collision.

Dear NHTSA, I am writing to report a safety defect with my Tesla Model 3, VIN 5yj3e1ea9jf009000. On July 28th, 2023, at 3:34 pm pst, my wife deepa was driving into my driveway at my home at 4103 filan way, san jose, CA, 95135. The weather was sunny and car was traveling at 5-10 mph. The car was not in autopilot and the driving mode was set to chill mode. When pressed the brake pedal to slow down, the car did not stop and went straight into my garage, causing significant damage to my home and the car. Very experienced driver and I am confident that wife was applying the brake pedal correctly. However, the car simply did not stop. I am very concerned that this is a software glitch in the Tesla car, and I am worried that it could happen to other Tesla drivers. I have tried to contact Tesla to report the issue, but I have not been able to reach anyone. I had the car towed to a body shop, but the car is now totaled and I cannot take it back to Tesla. I am requesting that NHTSA investigate this safety defect and take appropriate action to protect Tesla drivers. I am also requesting that NHTSA help me to get in touch with Tesla so that I can resolve this issue. Thank you for your time and attention to this matter. Sincerely, karthik katingari.

My car left the road traveling at 60mph, and after leaving the road it was quickly approaching a metal pole. At this time it seemed that the breaks were not able to stop the vehicle. After totaling the car, and what I thought would be the loss of my life, my airbags did not deploy. To further explain the extent of the accident: the front bumper is destroyed, the hood is destroyed, the windshield is destroyed and caved in onto me, the roof was destroyed, the back glass was also destroyed, along with much more extensive damage to the build of the car. The pole involved in the accident came out of the ground and through the car. It is unfathomable how I am still alive with manageable injuries. Yet- no airbags. This could have ended much differently.

My Tesla 3 on autopilot have stopped on highways without cause this week. This happened numerous time during this year.

2018 Tesla Model 3 was in cruise control (not self-drive) on an interstate with no other vehicles in the near vicinity. The car repeatedly applied brakes unexpectedly. I have traveled with this vehicle before and did not have unexpected braking problems. I have requested a Tesla service appointment but do not know if Tesla has an answer to what I hear is a widespread problem.

Car speed control malfunctioned. There was a sudden acceleration when car was below 10 miles in the parking lot. The driver lost control on braking and car keep accelerating even no force was applied to pedal. Dribe had to steer out of parking lot and crash through a wood en fence on next door neighbor. Car still keep going thru front yard of two houses cross the street and eventually hit a concrete barrier on front porch of the house. Several parts breakoff underneath the car , fluid leaked and all wheels are severely damage. Severy damage to front body side of the of the car and battery system , has occurred . There was near miss body injury to pedestrians in the area and neighbor hood. No physical injury was reported at the time of accident. But driver reported psychologycal distress. Currently car is towed away per instruction from insurance company for evaluation. Police report case# 23021162 north brunswick pd 710 hermann road north brunswick, NJ 08902.

Brakes completely failed after the car sat idle for a week. Went to start the car and there were no breaks at all. Fortunately the car was at the garage and after close inspection of the break system it was discovered that the break lining to the break wheel assembles (both sides) had significant rust. With the left rear completely rusted out and leaked the entire fluid out. If we had driven the car it could have been a disaster. We could have been killed and or someone else killed. The car had been in a heated garaged its entire 4 year life and maintained properly. There was no damage to the vehicle prior to the break failure.

While using the traffic-aware cruise control in my Tesla Model 3, going down the highway with cruise set at 75 and no cars around, the Tesla suddenly braked unexpectedly and with no visible cause. I then googled for similar Tesla experiences and saw the gov was investigating this on 2021 and 2022 models, however my car is a 2017 or 18 and exhibited the same situation.

Phantom breaking. I was on cruise control only (not fsd mode) on hwy at 65 mile/hr, and my car breaking suddenly to 45 ml/hr until I took over. No one injured and no accident. There was a car behind of me when it happened, and the car changed line immediately.

My car breaks as if I got in to an accident. This has happened more than two times. Car breaks so badly and it drops everything from seats. Very scary. Most of the time I was driving at 10-15 miles per hour in parking lots looking for parking. I always wear seatbelts. Not sure why this happens but it is very scary and had there been cars very close to me I could get rear ended. I did take the car to Tesla dealer. They always come up with some excuses.

Multiple times when using the auto-pilot feature the brakes will engage and dramatically slow down the car for no reason. This has probably happened 5-10 times. At this point it is getting concerning. Luckily, no cars have been following me closely enough to cause an accident, but I'm afraid that this will occur at some point unless this is fixed. I am usually driving on the highway and there is nothing in front of me and the brakes will engage. On the screen I see arrows in the passing lane flowing in the opposite direction. I'm not sure what this means or if this is triggering the brakes.

Our Tesla Model 3 had a failure of lv contactor which engages the hv circuit while driving the car in a 45mph side road. The car had a sudden shutdown with emergency brakes engaged and the car came to a stop violently. It was providence that there were no vehicles following or car was not being operated in a 75mph freeway and hence did not end up in a rear collision accident or worse involving an 18 wheeler. We talked to Tesla service and they indicated that such contactor failures occur and the car would typically behave like it did with stopping immediately as per design. I was telling Tesla service that the car should probably move into neutral mode rather than stopping immediately. I also heard other instances where Tesla has stopped suddenly in the media. I would like Tesla to review their current logic with handling contactor failure and prevent violent and sudden stops of the vehicle to prevent accidents.

On a recent trip from northern califorina to southern California, I experienced 5 episodes of phantom braking, that involved my brakes being applied at 75 miles per hour when no other vechiles were around me. This also happened 3 days later 4 times when traveling from southern California to my home in northern California. All incidents happened on hwy I--5 I have contacted Tesla service and they tell me nothing is wrong after checking vehicle logs. I believe this is a known issue, that is why I am reporting it. My first trip was Sep 1st and second trip was sept 4th in all incidents adaptive cruise control was engaged.

Phantom braking is extremely dangerous and a cause for disaster! while in autopilot, it will unexpectedly brake while driving on the freeway. This causes a jerk to the human body and cause a possible rear end accident. This is quite frequent.

While driving my vehicle, no matter if I am on the interstate, country roads, side roads the vehicle will brake for unknown reasons. It will go from 65mph to 35mph, or 55mph to 45mph, etc. This happens whether in cruise control, auto drive or manual drive. It also will brake behind trash trucks with their flashing lights on, intersection flashing lights or warning flashing lights on the side of the road. It has also done it at night with oncoming vehicles. This is a daily occurrence. I have contacted Tesla service center on a few occasions and I am always told it is a computer issue, there is nothing that can be done. This is an extreme safety issue and can cause a rear-end accident or another type of accident. I can not believe this issue has been going on for years and Tesla can not come up with a solution.

On two occasions while on adaptive cruise control, my car slammed on the brakes while driving on the interstate going 65-70 mph. This was terrifying and the car practically stopped in the middle of the road. We are very lucky no one hit us from behind and that we did not lose control.

Phantom braking that causes the vehicle to suddenly apply the brakes for no reason. Issue occurs at least once each time I use the autopilot. Occurs on interstates as well as highways. In my 6 hour drive today it happened 5 times. Each time the vehicle decreases in speed by 15-30mph. This is extremely dangerous for vehicles following behind and for the passengers who are suddenly jolted.

With no warning, and while on autopilot-full self drive, our Tesla totally hard and long braked out of nowhere, thrusting our necks forward for four seconds until I could disengage the brake, then slamming our heads to the headrest. I have a cervical sprain, whiplash, and a concussion! I was driving 65mph. I’ve been to the er, to a chiropractor, and to physical therapy since this incident Sunday, July 31, 2022 at 6:37-6:38pm. On the 405 south. I’ve reported it to Tesla service who said it was escalated to the fremont location engineers to review which takes 2-3 months! I have injuries! phantom braking is usually unwarranted and terrifying but has not hurt me until this time. I was almost hit by the car behind us!.

The car brakes by it and accelerates by it. Some time it says I am not holding the steering wheel and it cancels the autopilot in the middle of the long distance driving. The defective cabin camera does not see the hand position at all and randomly keeps on distracting from the front road view to the screen which is not in the same line as the road. Too many errors of auto pilot are very frustrating and distracting. The Tesla’s team tries to repair something and keeps on blaming their own departments not to fix things correctly. I have tried many times to make an appointment thru their app which is very buggy and it’s like one way communication. I have multiple recalls on my car but they don’t have time or parts to fix it. They will not allow making any weekend or within 20 mile radius service center. Once they do any repair their technician drops the ball and do not want to fix the original problem correctly. The full self driving is ridiculous I have not been able to complete even 10 miles trip without taking over in few minutes. This fsd software/hardware needs to be more accurate as soon as possible so that there is no harm done to the driver and passenger to the Tesla and other cars.

Ghost braking hard and want refunded for full self driving because it’s not there.