Tesla Quietly Ships FSD v14.3.13 to AI4 Cars With the Same Release Notes

Image: Tesla

Update, October 20, 2026: One of the first hands-on takes on v14.3.13 comes from Whole Mars, who shared his first impressions on X early Tuesday after three short trips with the new build. He said it “reversed out of my driveway much more quickly than previous versions,” parked “perfectly 3/3 times for each destination” and did “a better job at parking within the lines than the previous build.” He also described a car stopped in its lane at a green light that v14.3.13 went around “without skipping a beat,” even in a tight space, along with “very smooth slowdowns approaching a red light or entering a turn lane.”

He did have a few reservations, calling the build “another major evolutionary step, but still a little bit awkward,” and saying Mad Max mode drove so aggressively that it was “sometimes uncomfortable going over dips or bumps in the road.” He noticed what he called a new personality trait in how the car accelerates and decelerates, adding, “I can’t quite explain it yet.” These are early impressions from three short drives, and he said he plans to test the build more in daytime traffic.

Just finished three short trips with Tesla Self-Driving 14.3.13. Not much time with the new build, but here are my initial impressions.

1. It reversed out of my driveway much more quickly than previous versions.

2. You can definitely feel the personality evolving more with each minor point release in the 14.3 series. This one felt like another major evolutionary step, but still a little bit awkward.

3. In Mad Max mode, the car was driving so aggressively that it was sometimes uncomfortable going over dips or bumps in the road. Aggressive is great, but you want to be cautious where appropriate so the user can actually leave it in that aggressive mode

4. It parked perfectly 3/3 times for each destination

5. It did a better job at parking within the lines than the previous build.

6. There was a car that was stopped in one lane when the light turned green, even intruding on the lane to its right a bit. The car just went around it without skipping a beat, even though it was a tight space, and did it very quickly like a human.

7. Very smooth slowdowns approaching a red light or entering a turn lane.

8. It seems to have this new personality trait where it will accelerate and decelerate on a different curve… I can’t quite explain it yet

Will test more in daytime traffic and let you know how it performs.

— Whole Mars Catalog (@wholemars) October 20, 2026

Tesla has started rolling out FSD (Supervised) v14.3.13 to AI4 vehicles with software update 2026.38.5.10, though the release notes that come with it don’t say anything new about what changed.

The update began showing up overnight in the United States. Owner TimDOES posted shortly before 1 AM PT on Tuesday that it was arriving on both his Cybertruck and Model Y, adding, “I do not see any changes to the release notes.” His screenshots of the in-car notes show the same list that came with v14.3.12, including an upgraded reinforcement learning stage, a new neural network vision encoder and an AI compiler and runtime rewritten “from the ground up with MLIR, resulting in 20% faster reaction time and improving model iteration speed.” Automatic Collision Evasion is still listed at the top.

Tesla hasn’t posted about v14.3.13 on its @Tesla or @TeslaSI accounts as of Tuesday morning, so there’s no official word on whether this build carries bug fixes, model tweaks or a bit of both. When the notes carry over unchanged from one point release to the next, any changes usually aren’t listed, so owners end up judging the difference from behind the wheel.

The release follows v14.3.12, which reached AI4 cars earlier this month. Before that, AI4 owners got v14.3.11 on October 7, in the same update that brought FSD Lite to HW3 cars. The 14.3 series has moved through a steady run of point releases since the summer, and the biggest recent change came with v14.3.9 in September, when Tesla said FSD Supervised can now activate on your behalf “when an imminent collision is detected and Automatic Emergency Braking (AEB) may not be enough.”

The notes also keep an “Upcoming Improvements” section listing two items, which are expanding reasoning to all behaviors beyond destination handling and adding pothole avoidance. Tesla engineer Phil Duan said earlier this month that improvements to pothole handling and navigation are coming, but neither has shown up as a shipped feature yet.

So far, there are no reports of v14.3.13 reaching HW3 cars. Those cars run FSD Lite, which Tesla brought to older Model 3 and Model Y vehicles in early October and then extended to Intel Model S and Model X cars on October 13. Tesla still hasn’t published a side-by-side list of what Lite leaves out compared with the full v14 build on AI4.

Has v14.3.13 reached your Tesla yet, and does it feel any different from v14.3.12?