NHTSA Complaint #11507574 — 2020 TESLA MODEL Y

• Cruise control braked hard unexpectedly and for no reason. I'm describing a specific instance here, but this happens regularly. Specifically, the traffic aware system frequently misinterprets the data it is collecting. In this case, a car in an exit lane, slowing down to take a ramp. I was not in that lane, but there was no painted line between my lane and the exit lane. My car slowed to match the speed of the car on the exit ramp. In other cases, my car has slowed drastically when a car in a slower lane slightly veered into my lane by only a couple inches. There has been no risk of a collision when this happens, but my car suddenly braking then causes a new risk of collision for the cars behind me. • Car rapidly decelerated from 70mph to 35 mph while there was another car behind me. He was caught off guard and had to manually brake hard himself to avoid hitting me • There are numerous independent confirmations of this behavior online, but I do not specifically know of any from an official "independent service center." Tesla denies the existence of the behavior. • There is no real "component" to inspect, this is a software issue • There were no warnings or other indications before it happened.