this post was submitted on 23 Aug 2026
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I had my Tesla slam on its brakes from 55 mph because it was convinced the car sitting at a stop sign at a crossroad was about to turn into my lane. Last time I trusted Autopilot in anything other than stop-and-go traffic. Not really in a hurry to find out if the Ioniq I have now does it any better.
Give me fully autonomous vehicles on roads where human drivers aren't allowed, or let me keep control, thank you very much.
I had a similar incident; I was in the second lane of a freeway and a truck was going to merge into the first lane from a cloverleaf, and my Tesla freaked the fuck out and slammed on the breaks. I was lucky there wasn’t a car behind me for a bit.
For what it’s worth, I hear that Tesla has by far the worst tracking for their adaptive cruise control and auto brake feature, especially after moving to camera based tracking. I’ve owned 3 cars with adaptive cruise control and never had any real issues. Biggest problem was a 2011 Volvo that would sometimes keep tracking vehicles going out in a turning lane, but never braked hard for no reason. Probably your Ioniq will work fine as well.