Early testers report improvements in hesitation and sudden braking with FSD 14.x, supporting the decision to expand the trial to HW4 owners.

Tesla is launching a 30-day trial of Full Self-Driving (FSD) version 14 for HW4/AI4-equipped vehicles in North America, targeting Model S, 3, X, Y, and Cybertruck owners.

The broader goal is to boost FSD adoption by gathering data from a large user base, even as current ownership of paid FSD remains a minority.

FSD 14.2 introduces updates like refined Speed Profiles and new Arrival Options, with ongoing improvements to navigation, lane selection, and responses to traffic, pedestrians, and obstacles in complex urban environments.

The trial aims to collect data and feedback to inform potential follow-on updates before Christmas, mirroring prior FSD trial strategies.

Eligible regions include the United States, Canada, Puerto Rico, and Mexico, with trial invitations sent via email and the Tesla app; the trial begins after the required software update is installed.

To qualify, vehicles must be HW4/AI4 and either be new buyers or upgraders; owners who already bought FSD are ineligible, while current FSD subscribers can upgrade to access the newer version.

The trial is part of a larger holiday-season software push for FSD 14 and 14.2, with related Tesla Oracle posts noted.

Tesla's CFO noted that paid FSD customers represent roughly 12% of the current fleet, highlighting a relatively small paid user base amid ongoing updates.

Tesla is promoting FSD through online ads and placements and expanding availability to seven countries, including South Korea, to grow adoption and data collection.

CEO Elon Musk has claimed rapid progress toward FSD, suggesting unsupervised FSD could be solved in the coming months, while recognizing the need to raise user awareness.

Musk noted that licensing FSD to other automakers is not a priority for Tesla at this time.