It appears that Tesla is now ramping the release of FSD V12.5.1.5 to more Hardware 3 vehicles. Based on comments from HW3 Tesla owners on social media, it appears that the recently released update represents a good step forward for the advanced driver-assist system.
As noted by Tesla Director of Autopilot Software Ashok Elluswamy in a recent comment on social media platform X, the company was able to achieve similar performance as HW4’s FSD V12.5 release with a smaller model for Hardware 3 vehicles. He also noted that deploying the larger model required Tesla to “implement a few kernels in the compiler to emulate the same operations that are natively supported on the AI4 hardware.”
First Drive of 12.5.1.5 on HW3! Fixed the One Main Issue on this route! pic.twitter.com/6RDBIwwD2l
— Rocco Speranza (@R0cco_Speranza) August 23, 2024
While initial reports of FSD V12.5’s HW3 release still suggested that the software was being rolled out to employees, later posts on social media suggested that regular consumers were also receiving the update. Reviews posted on social media from longtime Tesla owners so far suggest that FSD V12.5 may very well be the best version of the advanced driver assist system that has been rolled out to HW3 vehicles to date.
🔥 FSD 12.5.1.5 Initial impression on HW3 (compared to 12.4.3)
— Effetto Tesla (@EffettoTesla) August 23, 2024
• Feels smoother
• Seems to be able to anticipate other cars' movement much better
• Overall it feels "quicker" and more confident in making decisions
• Highway stack definitely feels more decisive
• Too low… https://t.co/TpUpGHNiQk pic.twitter.com/pgd9jTU2Mv
Among the most prominent comments from HW3 vehicle owners was that FSD V12.5 definitely feels smoother than previous iterations of the advanced driver assist system. The build reportedly also feels quicker and more confident in making decisions. This is quite evident in the freeway, as the highway stack has reportedly become more decisive with the V12.5 update as well. That being said, some owners also mentioned that V12.5’s auto speed is a bit too slow in Hardware 3 vehicles.
FSD 12.5.1.5 first impressions on HW3 “legacy” Model S (~45 min drive)
— ΛI DRIVR (@AIDRIVR) August 23, 2024
– the 12.5 magic is definitely still there. it takes natural paths through all the turns, has very good lane positioning, and much better acceleration / braking than any version so far
– it’s not hands free… pic.twitter.com/FYgEQcckOz
Longtime FSD tester @AIDRIVR, who uses a Hardware 3 Tesla Model S with no interior camera, observed that the new update tends to take natural paths through turns. He also noted that FSD V12.5 has very good lane positioning. The update reportedly also featured the best acceleration and braking compared to any FSD version that has been released to date.
I just took FSD 12.5.1.5 (HW3) out for a quick after dark drive. It was flawless and extremely comfortable. However….!!! I think I could have said the same about many previous releases under the same situation. More testing required to form a full opinion. @BarryGoodStocks https://t.co/FKAAxvuNNw
— FSD (Beta) Test Pilot (@j32pmxr) August 23, 2024
Overall, it does appear that FSD V12.5 is a solid release for Hardware 3 vehicles. However, it does present some concerns about how fast older Teslas would be receiving the latest updates from the electric vehicle maker. Tesla first started selling FSD as an add-on for Enhanced Autopilot in 2016, after all, and Hardware 3 was only made available for vehicles in 2019. Hardware 4 was released in 2023.
Watch a video of FSD V12.5 on a Hardware 3 vehicle below.
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