Tesla rolls out FSD v14.3.8: full build for HW4, FSD v14 Lite finally hits HW3
- News
- Rocks on Galaxy
- Tesla
- 08 Sep, 2026
Tesla is pushing Full Self-Driving (Supervised) v14 forward. The latest release, FSD v14.3.8 (software version 2026.26.6.5), continues the rapid iteration of the 14.3 branch on Hardware 4 vehicles.
Two builds, one release
The headline is for older cars: Hardware 3, long left out of the newest full FSD iterations, finally receives FSD v14 Lite, a lighter build tailored to its compute budget.
- HW4: full FSD v14.3.8;
- HW3: FSD v14 Lite, the optimized variant;
- the 2026.26.6.5 update also bundles the latest summer cabin features.
Continuous iteration
The rollout fits Tesla's steady cadence of 14.3-branch updates, refining driving behavior between major announcements. Full release notes are tracked over time by dedicated software-tracking sites.