NHTSA Complaint #11483204 — 2021 TESLA MODEL 3

While using my Tesla's Full Self Driving (FSD) feature (Navigate on Autopilot) on a recent road trip through West Texas, the vehicle, on multiple occasions, would automatically brake while cruising at speeds of 80 mph (speed limit was 75 mph), which consequently dropped the vehicle's speed over 20 mph within seconds. The result was being forcibly slammed forward with such a jarring, unexpected force that would have easily slammed me as the driver and my front seat passenger into the wind shield if we were not wearing our seatbelts. This happened multiple times on the trip. The only way to recover was to depress the accelerator and forcefully hold on to the steering wheel until the braking system released and control was returned to the driver. If this had occurred on a crowded highway rather than on the open spaces of the West Texas interstate system, I am convinced there would have been a rear impact collision. This "phantom breaking" as Tesla claims, is a serious issue that will no doubt lead to fatalities if not corrected. This issue manifested without warning and with no alerting. The issue can be easily reproduced and the component has yet to be inspected by any 3rd party. I fear people will die because of this issue until it is resolved. Thanks, Sean Merino