NHTSA Complaint #11616729 — 2023 TESLA MODEL Y

Several times in the last few months I have had extremely hard braking on the highway when using adaptive cruise control (called Autopilot by Tesla). It has happened on a few different highways ([XXX] in Arizona, [XXX] in New Mexico, [XXX] in Colorado) all when going between 65-75 miles per hour. Thankfully, in most cases, there was no one directly behind me or there almost certainly would have been an accident. In one case a colleague of mine was following me and had to slam on the brakes, too, but she avoided an accident by reacting quickly. In all cases the road in front of me was empty of traffic and there was no warning that the brakes were about to be strongly applied. In some cases the car seemed to react to a turn in the highway, or maybe an uphill or downhill section, but it is unclear to me. In all cases the brakes were applied with a lot of force, and in all cases it was pretty scary. This seems like a huge safety issue with the adaptive cruise control of my Tesla Model Y. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)