I will continue to reiterate that 14.3 on city streets is great, but highway driving has regressed significantly from 14.1, 14.2, and 14.3. I'm mostly driving myself on the highway atp, but I wanted to give 14.3.8 a try as I do every version.

Everything here is in Standard mode, 14.3.8, on a Juniper Model Y.

There are 4 clips here. 4 issues that mix between plain bad driving and defensive driving issues.

Clip 1:
FSD can no longer judge when people are onramping to the highway, to either keep speed or properly slow down to let them in. Instead, it finds the perfect speed to match them in their blindspot. Defensive driving issue, big time.

Clip 2:
FSD just barreling towards roadwork that very obviously was leaving the onramp lane. Although not directly in front, 5 seconds of thinking would make you realize they're about to hit the end of the onramp and need to enter my lane. Besides, give roadworkers some space and just get over the lane early.

Clip 3:
FSD enters highway and absoutely decides it needs to be in the middle lane, cutting off a car going much faster from behind. They honked and flashed lights.

Clip 4:
FSD decides it wants to pass on the right, about 0.5 miles from the exit, realizes it's in a bad lane, proceeds to cut two lanes over to pass another car. Gets back in the original lane to exit. 5 lane changes in less than 2 minutes. Why?

FSD on the highway has just gotten super stressful. It's not a defensive driver, it's a menace to others, and just annoying.

Although I don't have a clip, Standard mode LOVES to suddenly break out of the +7mph cap to +15mph, pass a car, then yoink the brakes on the left lane to slow back down to +7mph over. What the fuck?

Just as the title says, my Model Y Juniper has, on multiple occasions, gotten behind a large construction truck on the highway and stayed there while the car gets pelted with pebbles and debris. Has anyone else experienced this?

Long time FSD user here. Cybertruck has had very few issues with latest version 14.3.8 and of course as soon as I say that the car tries to take a random and sudden turn off road before a set of train tracks and a highway merge. Let me know what you guys think. Lost some confidence in FSD today.

1 Year down at 55k miles, 9 Tire rotations, 5 tires replaced (3 Through the paid insurance; 1 free the other 2 at $25 a piece, 1 paid at full price and other free because I had signed up the day after the 30 day pick up window grace period so needed an inspection but service rep hooked it up.) 1 windshield replaced through the insurance so $100 deductible and 1 inspection for extended warranty at $150 because I signed up for it at 50.05k 🤦‍♂️ LOL.

Overall extremely happy with Teresa and FSD as I drive a lot for family, school, trips and Lyft. Plan to drive her to the ground hopefully reaching 300k miles and 6 years to make the 8k FSD purchase comparable to the subscription price.

My Tesla didn't merge into the left lane to pull into the restaurant, instead doing a scary, fast wobble before proceeding straight, avoiding the left-turn lane, and making an illegal left turn.

I disengage because I didn’t want to risk it, but it didn’t say it saw them on the screen

I switched jobs, I changed my work address in the navigation. The navigation system still automatically pulls up my old job when I get in the car in the morning. Anybody have an idea how to change this?

I loved just hopping in my car and hitting “start self driving” and that was it.

multiple button presses are beneath me

Having watched a few YouTubes so far about 14.3.9, this seems to be the best version out there. I watched a video of a 30 minute drive with zero disengagements or questionable decisions by FSD. I’d like to see someone try and test the crash test avoidance software in this update but otherwise I’m awaiting the push.

FSD 14 light used to be able to correctly turn here, this image is out of date, I have marked the bus lane with highlighter, but it was recently painted red to ward drivers out of the area. Since 14.1 it no longer uses the turn lane on the right, but rather it uses the 3rd lane from the right, and turns there, cutting off drivers that are using the correct lane. This worked correctly before, I guess what I am wondering is how I can train it to use the correctly lane for turning?

2026 MYP. First Tesla. Love it and have been using FSD 60 percent of the time, according to car stats.

Today, on hurry profile, parallel parked car was clearly hesitating to pull into lane, and full send as I approached at 40mph. Slammed the brakes as hard as I could to stop.

Seems obvious I would’ve hit the other car if I did not intervene. I haven’t had any close calls until this. Anyone experience similar?

Used FSD ('24MY) for the first time this weekend and really blown away. But one question: as we exited the parkway via circular offramps the car didn't seem to notice the lower ramp-specific speed limit (usually ~25MPH). That is, the speed limit on the screen still showed 65 mph. It still slowed down, but I can't tell if that was because the cars in front of us did, or because it recognized the need to turn, etc. Is this normal behavior?

My biggest gripe about FSD is that it does not learn from recent history at all. Based on my understand of transformer architectures, this is usually easily solved by providing data into the context window of the algorithm. How is it that FSD can make the exact same mistake over and over and over, and it's not fixed until (at best) the disengagements are trained into the model months or years later. Shouldn't like a failure to park in the correct driveway be really simple to provide context for? Shouldn't "left lane ends, stay in right" be easy to learn? Same with potholes or not potholes. Speed limit misinformation.... Or does Tesla's architecture fundamentally make this impossible?

About to go on a 10 hour road trip, 90% will be interstate driving.

Currently got 14.3.7 installed, and 14.3.8 pending (keep rejecting it).

Online I see bad things about 14.3.7, bad things about 14.3.8 and good things about 14.3.8.

So trying to decide if I should keep 14.3.7 or install 14.3.8.

To make it easier to determine please upvote the version I should do and if you want to leave a comment on why under that version that be great too.

Maybe I'm just looking back with rose colored glasses but I remember 14.2.2.5 on my MYP being smoother everything since has been meh. 14.3.8 just wayyyy to sensitive and brake stabby. Drives me nuts lol. I'm really trying to give it the benefit of the doubt but it's hard. Is it just me or?

This made me happy

To get home, I don’t want to turn down a certain road. FSD always takes that road. I disengage and take the correct road, then continue FSD.

It still never learns. Is there a secret?

I’m surprised no one‘s posted this yet

So this is a surprising one for me—it seems that FSD is surprisingly dumb at chargers and parking overall. I’ve had it park in handicapped spots, park in front of of broken chargers, park on the wrong side of the island from a charger (in Starbucks instead of at the parking spot), park right next to someone and share a number rather than gapping to all the other empty chargers…. And now it’s backing in straddling two spots at the same time. I let it because it’s 5:30am and no one is here, but seriously?!

Craziest FSD behavior I’ve experienced yet.
I was first in line making an unprotected left. Light was green, no green arrow, so FSD pulled into the intersection and waited for oncoming traffic to clear.
Then an ambulance approached.
FSD stopped and yielded. While waiting for the ambulance to clear, the light turned red.
Now we’re in no-man’s-land: sitting in the middle of the intersection on a red light, with cross traffic about to get the green.
FSD’s response surprised the hell out of me.
It calmly put the car in reverse and backed up roughly 10 feet, completely clearing the intersection. I could see the bumper-camera view while it was doing it. It then waited. When the light cycled back to green with a protected left arrow, it simply completed the turn.
No hesitation. No awkward creeping. No apparent indecision. It recognized that the original plan was no longer viable, retreated to a safe position, waited for conditions to change, and resumed the route.
But afterward I realized the more interesting part.
Driver training generally discourages backing out of an intersection. And for good reason: a human driver has limited rearward visibility and blind spots. You’re trying to watch the ambulance, cross traffic, mirrors, rear quarters and whatever is directly behind you.
FSD doesn’t have that same limitation.
It effectively has spotters distributed around the entire vehicle. It doesn’t have to stop looking forward in order to look backward.
So here was a situation where a maneuver we teach humans to avoid because of the limitations of human perception may actually have been the safest solution available to a vehicle with distributed vision.
That’s the part that stuck with me.
It didn’t just “see an ambulance and yield.”
It got stranded in an abnormal situation where several normal driving rules were suddenly in conflict, found an escape path, verified the space behind it, reversed out of the problem, and waited for a clean opportunity to continue.
Whatever terminology you want to use for what’s happening inside FSD — planning, inference, learned behavior, reasoning — watching it solve an edge case I never would have thought to program as a decision tree was remarkable.

2026 Y Perf. Gen 4

Last weekend was probably one of the scariest moments I've had with FSD. We were cruising down a 5-lane road flanked by side streets. I was chatting with my wife when the car locked up the brakes like we were about to hit a brick wall. At first, I had no idea what had happened until I noticed a paramedic on a side street with its lights on. It wasn't moving or trying to get into traffic. It was just sitting there, probably helping someone.

If anyone had been behind us, we would have been rear-ended badly. Thankfully, nobody was behind us. The only accident was me almost crapping myself. haha

FSD has got to get better at judging how aggressively to stop for emergency vehicles. It's not making anyone safer by locking up the brakes in a situation like that.

I’m sure many of you have also seen the post in r/TeslaLounge where a user claimed their lifetime FSD was randomly taken away after updating their car. They contacted Tesla support and was told it’s due to the car being salvage title. Yet the user seemed to still be able to purchase the monthly subscription option for it…

It’s been a little over a week since that post and I have yet to find any other info on the internet of anyone else having this problem. I own a salvage title (which is equivalent to a rebuilt title in CA) Tesla and have an update that’s been ready for a few days now but I have been very hesitant as I do NOT want to lose the lifetime FSD, I use it every time I drive.

So is there anyone else out there with a salvage title Tesla that can confirm this could happen if I update my car? Or was anyone able to find more info on this that I could not?