Which parts fail
Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2021 Tesla Model 3 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2021 Tesla Model 3. The contact stated that while attempting to park at 5 MPH, the brake pedal was depressed however the vehicle accelerated independently. As a result, the contact crashed into the two parked vehicles on the side of the parking space she was attempting to park. No air bags were deployed. One parked vehicle had an occupant and the other was unoccupied. There were no injuries or medical attention required. A police report was filed. The manufacturer was made aware of the failure and the vehicle was taken to an unknown dealer where it was unable to be diagnosed due to no available appointment. The dealer then suggested the vehicle be towed to the contact's residence where it currently remains in the garage. Tesla informed the contact that the brake system would not be inspected until she repaired the crash cosmetic damage to the vehicle. …
The contact owned a 2021 Tesla Model 3. The contact stated that after reversing out of a parking space, then shifting to the drive position and lightly pressing the accelerator pedal the vehicle suddenly experienced unintended acceleration and drove forward at a very high rate of speed. The vehicle drove across a street and crashed into a building. During the crash, the driver sustained an upper torso and neck injury and was transported to the hospital. One person inside the building was also injured during the incident. No further information was available. The vehicle was destroyed and towed away. A police report was taken at the scene. The manufacturer was notified of the incident. The failure mileage was 12,400.
The vehicle, a 2021 Tesla Model 3, had an episode of sudden unintended acceleration. I was almost stationary waiting to make a left when the car accelerated by itself, left the road, crossed a grass field at high speed and crashed into bushes. The vehicle was not on auto pilot, it resulted in damage of almost $ 20.000 as estimated by insurance. The vehicle is available for inspection, it will be checked by Tesla service after the damage is fixed. There were no previous warnings, this is the first incident of this kind. It is not clear what component malfunctioned, probably some electric/electronic device in charge of acceleration. It was obviously a very dangerous event that could have jeopardized my safety and/or some others.
This accident involved a high speed collision on the 2nd floor of a parking garage at a hospital in a suburb of Houston, Tx. Both the driver and the passenger were killed. A question has arisen as to how the vehicle could have accelerated at such a high rate, in such a short period of time, especially inside a parking garage? When we found out NHSTA was re-opening, the Tesla sudden acceleration issue, we thought it important to include the facts of our accident. Sudden acceleration in this case, raises some concern, taking into account the facts and circumstances surrounding this accident. We have photos of the vehicle if needed.
Attempting to park. Slowly inching forward while turning left. Vehicle accelerated. (Sudden Unintended Acceleration: SUA) Vehicle jumped a curb, bounced off a tree, dropped off the curb before comping to a stop. Internet search shows other similar reports; attributed, by Tesla, as pedal misapplication. This was not "pedal misapplication". I am not looking for anything. But NHTSA should increment occurance counter by 1. Tesla has a problem. Electrical or Mechanical...do not know. They have also lost me as a customer. The car will be sold. I have video...mp4
After parking and leaving the car, I realize later the dashboard did not shut down. The dashboard was still illuminated, and I was also able to hear the sound from a tuned FM radio. I re-open and closed both the driver and the passenger doors in an attempt to shutoff the dashboard. Since I did not get the expected result, I decided to get back into the car. I sat down in the driver chair to investigate the problem when the car was instantly activated and switched to a sudden and uncontrolled acceleration. It crashed into a facing wall after a run of about 30 feet.
The contact owns a 2021 Tesla Model 3. The contact stated while driving 65 MPH with the cruise control activated, the vehicle decelerated, and the brakes activated erroneously. The accelerator pedal was depressed, and the vehicle returned to normal driving operation. The contact stated that the failure recurred several times. There was no warning light illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 8,000.
My Tesla 3 accelerated out of control when parking at my place of work which is a daycare center. I could have killed children, others and myself. My foot was fully pressed on the brake. Tesla is claiming it is driver error. That is false my foot was pressed fully on the brake. Scared to go back in the car. I don't want that car on the road. I hit the curb went airborne missing a car, sign, brick wall, trees onto an embankment. I have a wittiness too.
The contact owns a 2021 Tesla Model 3. The contact stated while driving approximately 65 MPH, the braking system erroneously activated, causing the vehicle to abruptly decelerate. The contact stated that the failure was due to a failure with the computer reading the speed limit as 45 MPH instead of 65 MPH. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 35,000.
1:Brake fail when trying to stop the car after the accident. The car is available for inspection at Arrow towing service Oklahoma City. 2: After the car accident the car keep going can't stop got Tee boned and my passenger broke his legs and ankles, elbow. 3: No, the problem has not be discussed with the dealer or manufacturer yet. 4: No one, including police, insurance have been inspect it. 5: No warning lamp or any kind of warning.
NHTSA investigations
Sudden Unintended Acceleration
The Office of Defects Investigation (ODI) received a petition requesting that ODI reevaluate its decision to deny DP20-001 on the basis that intermittent high electrical current demands on the vehicles' 12VDC systems may have caused some or all of the incidents examined by ODI in DP20-001. The petitioner bases this information on a review of open-source research and the DP20-001 denial.
Acceleration complaints in other Model 3 years
Frequently asked questions
How common are acceleration problems on the 2021 Tesla Model 3?
NHTSA has 123 complaints about the speed control & acceleration of the 2021 Tesla Model 3, 18% of the model year's 671 complaints. The component named most often is cruise control (1 mentions).
Is there a recall for 2021 Tesla Model 3 acceleration problems?
No. NHTSA lists no speed control & acceleration recall for the 2021 Tesla Model 3, though it has 22 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2021 Tesla Model 3 acceleration problems start?
Half of the complaints with a recorded mileage happened before about 12,000 miles, and 67% before 25,000 miles.
Is it dangerous?
Owners linked 11 crashes, 0 fires and 6 injuries and 2 deaths to speed control & acceleration problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.