EVwire brief: Tesla has started rolling out FSD (Supervised) V14 Lite to Hardware 3 (AI3) vehicles, delivering the long-awaited upgrade that brings much of the driving behavior and feature set from the Hardware 4 V14 stack to Tesla's older fleet. The software is initially being released to AI3 early-access customers, with a broader rollout planned over the coming weeks.
Tesla VP of AI Software Ashok Elluswamy said the new software "distills" the driving behavior of the AI4 V14 stack into Hardware 3, adding destination options, speed profiles on city streets, and, most importantly, significantly improved safety.
"FSD v14 Lite is now rolling out to AI3 early-access customers. Based on the feedback, will rollout to more customers over the next few weeks. This build distills the driving behavior from AI4's v14 series into both the camera and compute config of AI3. It includes destination options and speed profiles on city roads, but more importantly significantly improved safety."
Tesla CEO Elon Musk also praised the engineering effort behind the release, noting the significant hardware limitations engineers had to overcome.
"The AI3 computer only has ~15% of the effective memory bandwidth of AI4, so this was a tough challenge."
Details:
FSD (Supervised) v14 Lite includes:
Distilled the intelligence from HW4 V14 into HW3. This allows HW3 to directly learn how to handle scenarios using HW4 V14 as a guide. This process unlocks the improvements that have been made to HW4 including Reinforcement Learning (RL) and offline models for HW3.
Improved both proactive and reactive responsiveness across a wide variety of categories including navigation handling, merges and forks, pedestrian interactions, traffic lights, and vehicle cut-in scenarios.
Improved general comfort in nominal scenarios through fewer false slowdowns, smoother steering and more consistent lane centering.
Introduced parking, unparking, and reversing capabilities.
Added Arrival Options for you to select where FSD should park: in a Parking Lot, on the Street, in a Driveway, or at the Curbside.
Speed Profiles are now available at all times, to further customize driving style preference.
Context:
Tesla flagged this build months ago. On the company's Q1 2026 earnings call in April, Ashok Elluswamy said a distilled V14 for HW3 was coming by the end of June, letting those cars start drives from Park and carry essentially the same features as HW4's V14. The June 29 rollout lands right on that timeline.
The same call set the ceiling. The Tesla CEO confirmed that HW3 cannot reach Unsupervised FSD, pointing to memory bandwidth as the limit. What V14 Lite does, then, is hand the HW3 fleet the FSD Supervised feature set, park-to-park driving, arrival options, speed profiles, and the safety and comfort gains distilled from HW4. That puts it close to feature parity with what HW4 owners run today.
V14 Lite brings a lot of advanced FSD Supervised features to Tesla’s HW3 fleet
The one gap that remains is the one Musk drew. HW4 (AI4) cars have a path to Unsupervised FSD in the future, and HW3 cars do not. For owners who bought FSD and want that driverless ceiling, Tesla has offered discounted trade-ins or a hardware upgrade to AI4. V14 Lite does not move that line, but it closes much of the day-to-day gap in the meantime.
Early HW3 reviews have been positive. One owner who ran the build for an hour called it a clear step up from the older v12.6.4 software, the post Musk was responding to when he praised the team.
Source: Ashok Elluswamy, Elon Musk, and the FSD V14 Lite release notes via Sawyer Merritt on X
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