It has now been more than a week since Tesla owners have been using the new FSD Supervised version 12.5.1.3.
Several of these FSD Supervised beta testers have shared their reviews on social media platforms like X (Twitter), Reddit, and YouTube.
Tesla has combined the FSD v12.5.1.3 (2024.26.10) branch with the production software branch (2024.26). This puts FSD Supervised users on the same set of features as the non-FSD Tesla cars. Usually, non-FSD builds are ahead of FSD builds in terms of newer production versions.
Tesla has recently been aggressive in deploying new FSD Supervised versions, especially FSD 12.5 subversion point releases.
As of this writing, data on TeslaFi.com shows that 687 out of 19,976 cars registered on the website have been shifted to FSD v12.5.1.3. The rollout seems to have slowed down after the initial wave because in our last report, the users were 679 a few days ago, so, it’s just a small number of new users.
FSD v12.5.1.3 First Impressions and Reviews
Chuck Cook’s first impressions, U-turns, and difficult UPLs
Chuck Cook has been testing FSD Beta (now FSD Supervised) since its early versions in Jacksonville, Florida (JAX). Near his home, there is a difficult unprotected left turn (UPL) that became popular when Tesla included it in the FSD 10.13 release notes and named it Chuck Cook-style UPL.
The performance of Tesla’s Full Self-Driving system has gradually improved at UPLs since the introduction of FSD v12. However, in the previous test of FSD v12.5.1.1, Chuck experienced a significant improvement in UPL and U-turn execution.
Tesla FSD in version 12.5.1.3 seems to have gotten a grip on U-turns. Taking U-turns was considerably challenging for FSD until last year but the automaker has trained the self-driving AI to master them in the last few months.
However, in his first impressions video of FSD v12.5.1.3, Chuck pointed out a lack in the vehicle’s route planner. Crossing a bridge and trying to take a U-turn after it. Although there was an intersection less than 50 feet ahead, his car decided to take a U-turn using a median before the intersection. This behavior is comparably unsafe. If the car had decided to take the U-turn from the first upcoming intersection, it would be a safer move — considering a car was behind it as well.
“Somehow the planner needs to have a little bit of common sense of what the safest thing to do is,” Chuck said.
Chuck Cook tested and documented the unprotected left turn (UPL) experience on a Sunday morning with mild traffic at the difficult U-turn in JAX we talked about earlier.
On his first attempt, on this UPL, Chuck’s Tesla dragged to the left toward the median curb. “It’s drifting pretty far left, it’s not as bad as the last time but it definitely drifted a little left there,” Chuck said.
“Ok, first one, good decision, I could tell when it was going to go, it was clear from the right [no traffic], so it didn’t have any sort of median issues,” he added.
FSD v12.5.1.3 also took the right lane (left or middle) after the median and did not show any lane-centering issues as well during Chuck’s UPL tests. The car also waited in the correct position in the medium to allow traffic from the right to pass easily (watch below).
Other FSD v12.5.1.3 Reviews
Other Tesla FSD testers like Dirty Tesla and FSD Finding the Edge YouTube channels posted their FSD v12.5.1.3 reviews on the video streaming platform.
Christ (Dirty Tesla) drove his car on FSD v12.5.1.3 during the night. This test is important as it tells us how Tesla Full Self-Driving performs in the dark. On a specific right turn, this version has improved even from the earlier v12.5 releases.
However, inside a parking lot, the Tesla vehicle got confused as it wanted to automatically park. The parking lot was almost empty but FSD v12.5.1.3 didn’t feel confident and the vehicle wiggled a lot. It also got stuck on a cul-de-sac.
Stay tuned for constant Tesla updates. Follow us on:
Google News | Flipboard | X (Twitter) | WhatsApp Channel | RSS (Feedly).
Related
- Tesla begins the FSD v14.3.11 (2026.33.5) update rollout (first impression videos, release notes)
- Tesla FSD becomes a sales driver, millionaire realtor replaces all his company cars with Tesla EVs
- Tesla rolls out FSD v14.2 Lite: legacy Tesla owner reviews, rollout status
- Tesla rolls out FSD v14.3.9 (2026.27.6) with Automatic Collision Evasion: feature details and official release notes
- Unsupervised Tesla Cybercabs roam the streets of Austin ahead of launch (videos)
- Tesla merges FSD v14.3.8 and the Summer Update (2026.26.6.5), Grok voice commands gain more control
.){kind=link}
With each update I lose 5 miles of range lol update can be 3 months apart or 1 week. Update installed immediately 5 miles lost. Which makes little sense as if battery knows when to drop the range and exact same #
You need to recalibrate your Tesla battery to regain the lost range, details and method here: https://www.teslaoracle.com/2021/05/26/heres-how-to-recalibrate-your-tesla-battery-for-an-exact-range-estimation/