I am writing to formally lodge a complaint against Tesla, Inc. regarding multiple critical safety failures that occurred with my Tesla Model Y (VIN: [XXX] ) during a collision on Saturday, [XXX], while I was traveling eastbound on [XXX] from the [XXX] exit to the [XXX] exit in Pennsylvania. At approximately [XXX], I was driving in the left lane when a BMW SUV abruptly cut into my lane ahead of me, accelerated briefly, and then suddenly braked. I immediately applied the brakes multiple times in an effort to stop my car. Even though there was sufficient space to stop safely, the braking system failed to respond, resulting in a collision with the BMW in front of me. Despite my efforts to avoid the impact, the following dangerous and unacceptable failures occurred at the time of the accident: 1.Failure of Regenerative Braking / Deceleration: When I lifted my foot from the accelerator, the vehicle did not decelerate as expected under Teslaâs regenerative braking system. 2.Failure of Braking System: Despite pressing the brake pedal twiceâincluding a heavy applicationâthe braking system failed to prevent collision, contrary to Teslaâs advertised safety performance. 3.Failure of Collision-Avoidance Features: Critical safety systemsâincluding Automatic Emergency Braking, Forward Collision Warning, and Obstacle-Aware Accelerationâdid not engage to mitigate or prevent the impact. 4.Failure of Airbag Deployment: Despite the severity of the crash, none of the airbags deployed