Tesla began deploying firmware version 2026.14.6 to the fleet on 12 May 2026, according to TeslaFi and NotATeslaApp tracker data. The release is described in the official changelog simply as "Bug Fixes," but the patch is significant enough that Tesla is pushing some installs over the vehicle's cellular connection rather than waiting for Wi-Fi — a pattern usually reserved for security-critical updates.
What Is in 2026.14.6
The release notes published by Tesla list no headline features. The internal changelog points to small bug fixes and security improvements layered on top of the 2026.14 branch, which over the previous month brought a redesigned rear-display map, the Hey Grok voice assistant, and Pet Mode personalisation. None of those features change in 2026.14.6 — the build is a maintenance update consolidating the branch.
The most consequential aspect is the delivery method. When Tesla bypasses the usual Wi-Fi-only constraint and queues an over-the-air update for cellular delivery, it generally means the patch closes a vulnerability that Tesla does not want owners delaying. The company has not publicly disclosed which component the fix addresses.
Rollout Status
| Tracker | Date observed | Notes |
|---|---|---|
| NotATeslaApp | 12 May 2026 | First confirmed rollout, fleet share 14.7%, 552 installs that day |
| TeslaFi | 12-13 May 2026 | Builds detected in monitored fleet alongside earlier 2026.14.3, 2026.14.2 and 2026.14.1 branches |
At the time of writing, the build had reached roughly 14.7% of the tracked fleet on its first day of distribution. Tesla typically takes one to three weeks to complete a global rollout for a point release.
Eligible Vehicles
2026.14.6 targets HW3 (Hardware 3) vehicles — broadly Model 3, Model Y, Model S, and Model X delivered between 2017 and 2022 — as well as AI4-equipped cars built since 2023. Older Model S and Model X units on Hardware 2.5 remain on the separate 2026.8 maintenance branch; the same is true of legacy fleet vehicles outside the supported HW3/AI4 set.
There is no FSD version change associated with 2026.14.6. Vehicles already running FSD (Supervised) v14.2.2.5 from 2026.14.3 will keep the same self-driving software when they take the new build.
What European Owners Should Do
For most European owners the answer is to accept the update when it appears. Because the release is small and contains security material, deferring it is not advisable. Owners running the older 2026.8 branch will need to wait for a separate maintenance push tailored to their hardware.
If the update bricks navigation, voice or media — issues that have appeared on earlier 2026.14 point releases — a vehicle-level reset (scroll-wheel reboot) usually clears them. Tesla service advisors have asked owners experiencing repeat failures to keep the install logs and report them through the in-car service request flow rather than rolling back to 2026.14.3, which is not officially supported.
Update: 2026-05-15
Three days into the rollout, 2026.14.6 has reached 32.9% of the tracked fleet, more than double the 14.7% recorded on day one. NotATeslaApp logged 843 fresh installs on 15 May 2026 alone, and Tesla launched its sixth rollout wave on 14 May to keep momentum behind the security patch. The cellular-delivery method first noted on day one is still in active use, confirming the release is being treated as time-sensitive rather than a normal Wi-Fi-only rollout. No new features or FSD version changes have been added in the intervening builds — vehicles continue to ship with FSD (Supervised) v14.2.2.5 carried over from 2026.14.3.
Update: 2026-05-16
By 16 May 2026, fleet-data trackers and the NotATeslaApp reverse-engineered changelog had identified a handful of feature changes that earlier coverage of 2026.14.6 had said were absent. Tesla has duplicated the Grok voice-assistant configuration into the Audio section of the Controls menu, so settings owners previously had to find through the Grok app sit alongside media and Bluetooth options. The dock's 'All Apps' glyph has been redesigned from an ellipsis-in-a-rectangle to an iOS-style folder showing a 3-by-3 grid of app icons. Autopilot and FSD visualisations now include cab-over-engine semi-trailer trucks of the kind common on European roads — the first time the rendering has matched European traffic rather than the American long-nose layout. Finally, HW3 vehicles receive a tweaked FSD v12.6.4 with the update, separate from the HW4-targeted FSD v14.2.2.5 carried over from 2026.14.3. The release has now reached wide-release status across all supported HW3 and AI4 vehicles, according to Tesla Oracle's reporting on the same day.