NHTSA Complaint #11453070 — 2018 TESLA MODEL 3

On several occasions while driving with autopilot on the car has suddenly and inexplicably braked HARD while at highway speed. Each time there was nothing in the road, no car, no obstruction, no anything, but it was as if the car saw something that wasn't there and jammed on the brakes. I quickly took back over and returned to highway speed. Luckily we were not in heavy traffic or I would have been concerned about being rear-ended by another vehicle. I don't do a lot of road trips with the car and have used autopilot less as a result, but I would guess it has happened 4-6 times since I have owned the vehicle. I just thought it was a glitch that they would work out but just saw reports of others still experiencing this issue so thought I should report it so you were aware of the breadth of the problem. The date below is a total guess as to the last occurrence.