FSD trial users are getting v12.5.4.1 upgrades

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Can confirm- I got this. Meh, wouldn’t say it’s that different

I have it, it's OK as long as you're not on two-lane country roads, there's it's dangerous, it does not stay in lane, it's atrocious.

Honestly not that impressed. I'm on hardware 3 so I'm sure that's part of it but boy does it still jerk the wheel. Once it can drive smoothly with confidence I'll be a lot more open to using it on a daily basis.

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On my last update, it's stopped picking up so many speed limit signs. AP will only go 5 over, so constantly have to keep my foot on the accelerator with ap more times than before.

12.5.4.1 ain’t exactly the best showing.

Yeah mine is the same way, '20 HW3. It seems to be overreacting to shadows and things it think might be in the road. I've noticed this version is making more attempts at trying to dodge stuff in the road

It's because [12.5.4.1](http://12.5.4.1) is (in my opinion) fundamentally broken, at least on HW3, as I can't speak for HW4. 12.4.3 and 12.3.6 were both so, so much smoother.

I have a 2023 M3 and it has regressed considerably from the previous version.

if traffic is stopped it waits until the last possible moment to start braking. Burns up my brake pads instead of harvesting the regen energy. 2022 MYLR

Also on 12.5.4.1 with HW3 Opposite experience, 12.3.6 made about as many mistakes but was less smooth. Exceptions are braking at green light x2 and driving too slow a couple times

Maybe my 12.3.6 was broken because it's absolutely not better than 12.5.4.1

Still haven’t got trial. My subscription ended yesterday, called them today and they said there will be more waves so hang tight. But yet everyone and there mom has gotten it according to this subreddit :(

Yes, braking is a problem with 12.5.4.1 on HW3 on my MYP as well. I was like why the heck it is braking when it happened the first time.

A lot of disengagements

Same. HW3 with 12.5.4.1. I don't think they change it after release but something's been up with me. Has made me use it less.

12.5.4.1 has been by far the most jerky, jankey version for me.

12.3.6 on every measure is reported to be better on HW3. If you look at any tracker it was about 30% better. I drove 30,000km on it accross the US and Canada coast to coast twice and it was near flawless. Im honestly kind of pissed I upgraded.

It's not any better on HW4. These trials make me less inclined to buy in their current state.

The best way I can describe it is that it feels like micro stutters. If I push lightly on the accelerator it’s okay but otherwise it can’t keep a smooth pace.

I can’t even use 12.5 on my road home anymore because it thinks the small signs for peoples house numbers are dogs and slams brakes while blaring alerts for each one. 12.4 thought only one was a dog and I just learned to hold the accelerator when I passed his house. 12.5 is every damn house now like it trained off the bad data from the single house or something.

Yah i got it last week, right after i got the FSD free month. Honestly i think 12.5 has some trust issues, one time it wouldn’t start driving on green light, just choking. It handled some unprotected left better than 12.3

Yah I had once it drove almost off the spiral type of on ramp

I feel like I’m being held hostage by my car now, can’t look at anything but straight ahead even for more than half a second. Wtf happened to FSD. Actually got kicked out of it for the first time ever the other and have no clue why 😂 This is on HW4 Tesla, it was much better before the last couple updates. Also have to have my foot on the accelerator frequently enough that it defeats the whole purpose. It used to go up to 10 over and chill there which is perfect, now half the time it feels like it’s always a few miles under the speed limit and you inevitably cause congestion

I get a lot of phantom braking with non-highway driving now, but aside from that, I find it has addressed a lot of issues I had with 12.3.6.

I found that 12.5.4 was great. The first FSD that I felt confident taking me place to place without any major worries. It wasn’t perfect but it was damn good. 12.5.4.1 is still good but not *as good*. It didn’t break things like updates have in the past, but it did make some things marginally worse.

On HW4 but yeah for the first time I had this bizarre brake slamming when there was nothing in front of me. There was a car in the lane next to mine but it hasn’t done anything unusual and my car just randomly decided it needed to slam the brakes for a half second. Bizarre behavior

2021 MYP HW3 Intel on 12.5.4.1 Fair to note they transitioned away from C++ and to their active neural network in this update. Really kind of scary. Very fast acceleration. Slams the brakes on. Terrifying jerky steering wheel movements. At some intersections it’s like the steering wheel is having a seizure. RIP my front tires. Drifts pretty badly in the lane. Sometimes rides the white outside line hard. Sometimes rides the inner yellow line hard. Has a lot of trouble making right turns and not crossing the double yellow, aka staying in lane. Speed control is gone. I can no longer adjust the cruise speed while in FSD. It sets automatically but then normally drives below the posted speed limit. Only fix I’ve found is manually pushing the accelerator or tapping the brake to slow down, which deactivates FSD. Not sure my old setup can keep up with these big updates for much longer. 😩

It's definitely converted me...back to basic autopilot.

Got it a few days ago HW4.

I’ve had 2 seriously random brakes occur on my hw3 m3 on the same day. It was pretty scary

12.3.6 was fantastic for me on my ‘20 M3. 12.5.4.1 feels like it’s regressed, I’m having to intervene much more often on mistakes that weren’t there in 12.3.6.

I am glad that you guys are reporting all of my issues on a 23 MXP. This version is unusable.

Somehow I got the update to 2024.38.2… I’m still on fsd 12.3.4 :(

12.5.4.1 here In one week, driving mostly local for 50 miles. Never react to green arrow left turn signal Smashed driver side rim Hesitation when light changes to green Other than that it works great.

I have a 2022 HW3 Y. Version 12.5.4 was a noticeable upgrade from 12.3.6. Significantly smoother and more confident and I used it often. Then I got that little .1 update and now it brakes for nearly every green light, jerks the wheel back and forth, and pulses the speed constantly. I don't know what they changed but I think it was the single biggest regression I've seen in FSD. Instant unsubscribe for me, and definitely not the version to use for another trial.

Have you seen any rate changes with the Progressive app? I've been kicking it around though we have relatively decent rates with them it worries me they'll just go up.

That mostly lines up with my experience too. I'm in a 24 MYP. Compared to my trial back in May it takes off like a rocket and brakes hard. The only thing I feel like it does better right now is the wheel is more confident when turning whereas it was very jerky before. Unfortunately it also does the thing with stop signs still where it stops right at the the stop sign which is simply a couple feet too early. Nobody stops there and it prevents it from ever being able to leave from one without having to slowly creep up a few feet.

2 lane curvy roads with traffic coming from the other direction it struggles massively. phantom brakes all over the place. 12.3.6 never did this. All other scenarios seem ok.

I’m on 12.5.4.1 and it legit slammed on the brakes at the intersection when I had a green light :/

It’s been absolutely miserable. Best we can hope is that they see the interventions and fix all these issues.

2023 M3. This shit is dog

Same. Lots of phantom braking and I can get it to stop in the middle of two different unprotected left turns that u know of - right in the middle of oncoming traffic.

TBD. It's pretty easy to drive and get zero flags if you stay off your phone and don't let FSD brake check you constantly. It did give me a 10% reduction in my premiums just for signing up, so I suppose I'm already ahead. I'm hoping once they get me off this tracker I'll see another 10-30% drop.

Interesting. How long is the time you have to use it and then do you have to continue using it after that or do you know if whatever you save is locked in without having to keep using it?

Started free trial of FSD. Have MYLR with HW3. Have v12.5.4.1. Was using it on highway. Speed limit 65. Max was going 66. Was telling my wife that one of complaints I had read on Reddit was inability to change speed when max is on. Then I tried scrolling the right wheel and it moved the speed up just like it supposed to. Changed it to 62 and it held that and changed lanes appropriately.

It says the time-frame is like 75 days to 6 months depending on how much you drive. I'm at like 4 months and it's still going, which is pretty annoying. It says I'm at a 5/5 star rating though, and I drive averagely/aggressively, so it's not hard to beat it. It also says it stops tracking you after you're done, so I plan on deleting the app afterward.

24 MYLR Just got off road trip in western MI to enjoy the color. This FSD trial upped my anxiety level. Similar to above experience. Lane placement on turns and straightaways while cruising was lousy.. Bad speed limit sign recognition. Sticky low speeds after a sign. Agree on stop sign behavior. Come on boys, this is basic stuff. Aggressive braking and acceleration. I briefly got a pop up switch for traffic aware speed control (or something like that). Never saw it again after I switched it off. Got a little better after that. Downloaded v12 2024.32.10. But there were times that I went back to auto pilot. Is it learning, can it learn?

they won't even cover tesla in my state period lol

It’s rough on HW4. I have trouble even trying to auto park with 12.5.4.1.

Interesting. Auto park works pretty well for me on 12.5.4.1 HW3. Everything else? Not so much.

I wish I had a video from yesterday but the car took 4 cuts to get into the parking spot, it was embarrassing and each cut was extremely jerky with quick acceleration, luckily both side spots where empty so no worries of hitting other cars. It also struggled to see yellow lines and construction barriers on 12.5.4.1 and tried driving into the shoulder while on the freeway in traffic yesterday. Definitely not safe.

No argument. This is not a fully baked product.

That's because end to end is only working on city streets. The highway is not yet end to end as of 12.5.4.1 You can still adjust speed on the highway but you cannot do it when it's using the end the end for the city roads.

Thanks for correcting me. I missed the line in the release notes saying “coming soon”.

What do you drive? I noticed on the X's I drive there are those issues, but on my 3 it's still good.

Me too! Luckily my model 3 is on 2024.32.10 so I can see how terrible 2.5.4.1 is and hope it doesn’t come to my model Y (it’s definitely a downgrade in my experience, both are HW3).

It's some way way better on its own way, like it doesn't try its way to take the wrong way out of my driveway into my one way street

12.5.4.1 has been mostly smooth on my highland. It still cuts in close on medians and will cut over lanes when turning through an intersection, and always corrects itself very jerky but it did that on older versions too.

I also noticed a change in turning smoothness, as well as  refusing to operate when the sun shines low. Maybe related to a recent NTSA investigation about a blinded FSD crash.  Hope this gets undone soon again.  Turning and stopping from summon was much smoother just a few weeks ago, on the same release.

Yes it’s much worse. It’s supposed to be able to learn now but so far learned not to drive off the curving on-ramps only to start doing it again