Tesla just pushed out FSD Supervised v14.3.9, and in the release notes is a feature that quietly changes the relationship between you and your car, whether you’ve ever touched the Full Self-Driving toggle or not. It’s called Automatic Collision Evasion, and the short version is: your Tesla can now take the wheel and steer for you, even while you’re the one driving manually, if it decides the situation calls for it.
According to Tesla, the system is meant to kick in under two scenarios. First, if a frontal collision looks imminent and regular automatic emergency braking might not be enough to stop it in time, FSD can activate on its own and steer around the obstacle instead of just slamming the brakes. Second, and this is the part that’s more interesting to me, it can also engage if the car thinks you’re not paying enough attention, like reaching into the back seat, or if it suspects FSD got disengaged by accident. In both cases, the car is making a judgment call about your intent and stepping in without being asked.
On paper, that’s genuinely exciting. Braking alone only has one axis to work with: slow down. Letting the car actually steer around a problem opens up a much richer set of options in the split-second moments where a swerve is the safer move than a stop. That’s a real capability jump, not just a bigger number on a spec sheet. I remember a situation as a kid, when I was a fresh new driver, slamming on my brakes and nearly hitting someone. Meanwhile, the lane next to me was right open. I could have swerved into that lane, but I didn’t have the split-second decision experience that I do now. So that could have gone bad. So this could potentially resolve something like that.
Here’s where I get less enthusiastic, though, because I watched this thing get confused over something that wasn’t a problem at all.
During lunch the other day, we were coming through a small two-lane residential intersection, FSD not engaged, just driving normally, and the lanes on the far side of the intersection shifted right by about a foot, maybe a little more. Nothing dramatic, the kind of minor lane offset you adjust for without even thinking about it. We were already calmly steering into that adjustment, tracking the new lane position the way you’d expect any attentive driver to. And then the car jerked the wheel to the right on its own, like it had decided we weren’t going to make the shift in time and needed to intervene.
We were adjusting. It just didn’t seem to trust that we were. Even though we take that road nearly daily.
That’s the exact tension Tesla’s own release notes gesture at without really addressing: how does the car decide the difference between “driver is handling this” and “driver is not handling this”? In our case, it guessed wrong, and the result wasn’t a crash prevented, it was a car second-guessing a driver who wasn’t actually doing anything wrong. Meanwhile, it sure triggered our flight-of-fight response out of nowhere.
Tesla hasn’t published any numbers on how often this system triggers unnecessarily, and given FSD v14’s documented history of phantom swerves and years of ongoing phantom braking complaints on Autopilot, that’s not a small omission. Reports also suggest this rolls out off by default, requiring you to opt in through a consent screen, which honestly feels like the right call for something this new.
Automatic Collision Evasion is a fascinating idea, and if the false-positive rate is genuinely low, it could end up being one of the more meaningful safety additions Tesla’s shipped since AEB itself. But based on our own experience with it grabbing the wheel over a totally unremarkable lane shift, I don’t think it’s fully baked yet. There’s a real difference between a car that helps you when you need it and a car that occasionally decides it knows better than you do when you didn’t need help at all.
So I guess, we will see where this all goes (not like we have choice, it seems).
