FSD Software Changelog

Firmware 2026.38.5.1 brings FSD v14.3 Lite to the Intel-MCU Model S and X, the last Hardware 3 cars without a v14 branch, with Tesla's own AI account confirming the rollout on 14 October 2026. The notes are identical to 2026.38.5; Teslascope saw about 1,210 cars take the build in five minutes, 36% of them Hardware 3; TeslaFi counted 37 installs and 154 pending by 09:00 UTC, all in North America. European FSD cars stay on v14.2.2.6.

Tesla began rolling out FSD (Supervised) v14.3 Lite to HW3 cars in firmware 2026.33.5 on 6–7 October 2026. All six bullets in the Lite notes are reprinted word for word from v14.2 Lite; the rollout is limited to early-access owners in North America, and no Lite version has shipped in Europe.

Tesla released FSD (Supervised) v14.3.11 in firmware 2026.33.5 for HW4 cars in North America on 6-7 October 2026, at 0% of the tracked fleet. The build moves the 14.3 branch off its 2026.27 base for the first time since August, but the mainline fleet is already on 2026.38.3, and the FSD release notes are carried forward for a third consecutive release.

Tesla shipped FSD (Supervised) v14.3.10 on 19 September 2026 in firmware 2026.27.10 for Hardware 4 cars in North America. All seventeen of its FSD bullets are copied verbatim from v14.3.9, thirteen days earlier. The one genuinely new thing in the build is vehicle-to-home with Powerwall, which is not an FSD feature at all.

Tesla began pushing FSD (Supervised) v14.3.9 in firmware 2026.27.5 on 6 September 2026, for HW4 cars in North America. Automatic Collision Evasion, a unified Summon/FSD/Robotaxi model and an 8 mph Smart Summon are new; eight other bullets, including the MLIR compiler rewrite and its 20% reaction-time claim, are reprinted verbatim from v14.3.8.

Tesla released FSD (Supervised) v14.3.8 on 26 August 2026 inside firmware 2026.26.6.5 for Hardware 4 cars in North America. The FSD release notes are byte-identical to v14.3.7 and v14.3.6, so nothing new is claimed for the driving stack. What changed is the firmware underneath it: this is the first build to carry the 2026.26 Summer Update and a current 14.3 FSD release in one install.

Tesla has released FSD (Supervised) v14.3.7 in firmware 2026.21.5 for HW4 cars in North America. It carries the same release notes as v14.3.6 and adds no new features — but early testers report it undoes the braking regressions that made the previous build so unpopular.

FSD (Supervised) v14.3.6 is now in wide release on Hardware 4 cars via firmware 2026.20.6.11, tightening driver monitoring and letting owners report why they took over. It is also the most complained-about build of the v14.3 branch: owners report brake-stuttering and shadow braking returning after v14.3.5.

Tesla's FSD (Supervised) v14.3.5, in firmware 2026.20.6.6, adds an on-demand Camera Preview, a rebuilt MLIR runtime Tesla says cuts reaction time by 20%, better traffic-light handling and intervention-streak tracking for Hardware 4 cars.

Tesla's latest FSD Supervised point release, v14.3.4 in firmware 2026.14.6.10, adds Actually Smart Summon for Cybertruck and on-map parking at your destination, while carrying forward the v14.3 line's MLIR compiler rewrite and 20% faster reaction time. HW4 only.

Tesla began rolling out FSD (Supervised) v14.3.3 inside firmware 2026.14.6.6 on 17 May 2026. The release adds a live intervention-free streak counter in the Self-Driving App, unifies the Actually Smart Summon backend with FSD and Robotaxi for a max-speed bump from 6 to 8 mph, and bundles the full 2026 Spring Update payload for both HW3 and HW4 vehicles.

Tesla pushed FSD v14.3.2 firmware 2026.2.9.9 to a wider rollout in late April 2026 with a redesigned post-disengagement menu adding a 'Navigation' option, and a new seat belt rule that lets drivers unbuckle before parking is engaged. Fleet saturation reached around 15 percent within 24 hours.

Software build 2026.2.9.8 collapses three previously separate Tesla AI stacks into one unified model, improving Actually Smart Summon behaviour and adding Blind Spot Warning While Parked. EU cars receive the update without Supervised FSD activation.

Rewritten AI compiler with MLIR for 20% faster reaction time, upgraded reinforcement learning, better animal handling, parking spot prediction

Tesla began pushing firmware 2026.27.6 on 8 September 2026, bringing FSD (Supervised) v14.2 Lite to HW3 Model 3 and Model Y in North America. All six bullets in the Lite section are reprinted verbatim from v14.1 Lite; Model S and X are still excluded, and the branch has never shipped in Europe.

Tesla has begun pushing FSD (Supervised) v14.2.2.6 inside firmware 2026.17.5 to HW4 cars in Europe, starting in the Netherlands. The release carries no new headline features but finally merges the separate European FSD branch into the main Spring 2026 software, and early drivers report a noticeably less strict driver-attention monitor.

Higher resolution vision encoder, human gesture recognition, Arrival Options, MAD MAX and SLOTH speed profiles, improved emergency vehicle handling

Upgraded vision encoder with higher resolution, MAD MAX speed profile, improved obstacle detection

Firmware 2026.21.6 is a two-branch build: Hardware 3 cars get FSD (Supervised) v14.1 Lite, the first version bump the cut-down branch has had, and Hardware 4 cars get v14.3.7. Tesla says it distilled the HW4 v14 stack into HW3 so the older computer inherits reinforcement-learning work it could never have trained itself. North America only.

Arrival options, speed profiles with SLOTH mode, emergency vehicle handling, navigation-integrated routing

Firmware 2026.20.7.5 carries FSD (Supervised) v14 Lite to South Korea, the first market outside North America to get the HW3 build. The catch is the eligibility rule: US-built Model 3 and Model Y only, which excludes almost every Tesla on Korean roads.

Tesla's 2026.20.6.10 firmware is the build of FSD v14 Lite that AI chief Ashok Elluswamy says is likely heading to a wide release for Hardware 3 cars. It adds the mobile FSD path and Self-Driving label, driving-streak milestones, in-app FSD stats and a brake-confirm toggle when starting from Park.

Tesla has started rolling out FSD (Supervised) v14 Lite to Hardware 3 cars with firmware 2026.20.5.1, distilling its newer v14 driving behaviour onto seven-year-old hardware. The build adds parking, reversing and Arrival options, but HW3 is permanently capped out of Unsupervised FSD and Robotaxi.

Tesla's early-June release pairs FSD Supervised v14.3.3 — with faster reactions and sharper driver monitoring — with a one-tap Self-Driving subscription flow, estimated toll fees in navigation, and rear-display map interaction.

Incremental improvements to FSD Supervised, bundled with firmware 2025.14 and later