If you already drive a Tesla with HW4, FSD (Supervised) v14.3.10 is best understood as a point release with a new version number but no newly named driving feature in the published notes. If your Model 3 or Model Y has HW3, the same 2026.27.10 vehicle software package follows a separate v14.2 Lite branch. And if you are shopping for a Tesla, this release is a useful reminder that the car's computer, software branch, region and FSD access matter more than the headline version number alone. [1][2][5]
Public trackers have recorded 2026.27.10 installations in the United States and Canada, while Teslascope also lists 2026.27.11 with v14.3.10. That confirms an observed rollout, not availability for every eligible vehicle. The only clearly identified addition in the broader 2026.27.10 package is Vehicle-to-Home with Powerwall for Cybertruck; it is separate from FSD driving behavior. [1][3][4]
The 30-second answer
| If this describes you | What v14.3.10 means | What to do |
|---|---|---|
| HW4 owner currently on v14.3.9 | The public FSD feature text is unchanged apart from the version number. No specific new driving behavior is promised. | Read the notes shown in your own car and keep normal supervision. Do not assume a named issue has been fixed unless Tesla says so. |
| HW3 Model 3 or Model Y owner | Software 2026.27.10 lists v14.2 Lite for supported HW3 cars, not v14.3.10. | Check the AI computer listed for your car before comparing your screen with an HW4 owner's. |
| Cybertruck owner | The concrete addition in 2026.27.10 may be Vehicle-to-Home with Powerwall, subject to the listed equipment and charge requirements. | Treat the energy feature and FSD version as separate parts of the same vehicle update. |
| Prospective Tesla or FSD buyer | A model name or software number does not by itself tell you which FSD branch the car will run. | Verify the exact vehicle's computer, region and current FSD access; base the purchase on capabilities available today. |
Version overview
| Detail | What is verified |
|---|---|
| FSD version | v14.3.10 on the HW4 / AI4 branch |
| Associated vehicle software | 2026.27.10; Teslascope also lists 2026.27.11 |
| Initial tracker dates | September 18 for 2026.27.10 on Teslascope and September 19 on Not a Tesla App; September 22 for 2026.27.11 on Teslascope |
| Observed countries | United States and Canada in Teslascope's recorded 2026.27.10 installations |
| HW3 branch in 2026.27.10 | v14.2 Lite for supported Model 3 and Model Y vehicles |
| Rollout status | Owner installations recorded; fleet-wide availability is not established |
The dates above are dates published by the trackers, not a single Tesla-announced global release date. Their samples do not represent the entire Tesla fleet. [1][3][4]
What current Tesla owners should check
Start with your own car rather than another owner's screenshot. Tesla says available updates appear in the vehicle's Software tab and can also be managed through the Tesla app. After installation, the vehicle's release notes are available under Software > Release Notes. Tesla also provides Controls > Software > Software Update Preference for choosing the update preference offered on the car. [6]
Next, confirm the onboard computer. Tesla's support guidance points owners to Controls > Software > Additional Vehicle Information, where the Autopilot computer is listed. That distinction matters here because 2026.27.10 maps to v14.3.10 on HW4 / AI4 but v14.2 Lite on supported HW3 Model 3 and Model Y vehicles. [1][7]
Finally, compare like with like: the same FSD version can appear inside more than one vehicle software build, and the same vehicle software build can carry different FSD branches for different hardware. An update arriving later than someone else's does not by itself show that your car is ineligible; Tesla rolls software out in phases, and the version available to a vehicle can vary. [4][6]
FSD remains supervised throughout this process. Tesla says the currently enabled FSD features require active driver supervision and do not make the vehicle autonomous. A new version number does not change the driver's responsibility. [5]
What actually changed from v14.3.9?
TESERY compared the FSD sections reproduced by Not a Tesla App for 2026.27.6 / v14.3.9 and 2026.27.10 / v14.3.10. After accounting for the version number, the listed FSD feature text is the same. [1][2]
| Item in the notes | How to read it in this release |
|---|---|
| FSD version number | Advances from v14.3.9 to v14.3.10 on the HW4 branch |
| Automatic Collision Evasion | Already listed in 2026.27.6; it is carried forward rather than introduced by v14.3.10 |
| Vision, parking and driving improvements | Repeated in the published notes; no separate v14.3.10 improvement is specified |
| 20% faster reaction-time claim | Appeared in the earlier notes; it is not evidence of another 20% gain over v14.3.9 |
| Cybertruck Vehicle-to-Home with Powerwall | Identified in 2026.27.10, but it is an energy feature rather than an FSD driving change |
| Pothole avoidance | Still shown under Upcoming Improvements, so it should not be treated as delivered |
Matching notes do not prove that the underlying code is identical. They show that the public changelog does not explain a new driving-behavior difference. TESERY has not road-tested v14.3.10, so this report does not promise smoother turns, fewer interventions or a fix for a particular owner complaint.
Owners moving from an older branch may still encounter features added in intermediate releases. That personal before-and-after experience is different from claiming that those features debuted in v14.3.10.
Who gets which branch?
The reproduced 2026.27.10 notes assign v14.3.10 to HW4 / AI4 and list refreshed Model S and Model X, Model 3, Model Y and Cybertruck in that hardware group. Model name alone is not enough to establish eligibility because production configuration, region, software branch and FSD access can differ. [1][5]
For supported HW3 Model 3 and Model Y vehicles, the package lists v14.2 Lite. The Lite notes include parking, unparking, reversing, arrival choices and speed-profile controls, but those items were also present in the preceding 2026.27.6 notes. Receiving a feature for the first time on one car is not the same as its first appearance in the branch notes. [1][2]
Where is v14.3.10 rolling out?
Teslascope's 2026.27.10 page records installations in the United States and Canada, and Not a Tesla App classifies the release as North America. This is enough to report an observed rollout in those two countries, but it does not establish that every eligible car has received it. [3][8]
The sources reviewed for this article do not establish v14.3.10 owner installations in Europe, China, Australia or New Zealand. That is an evidence limit, not a claim that FSD in general is unavailable throughout those markets. Local regulatory status, feature availability and a particular build reaching owners are separate questions.
Teslascope lists the follow-up vehicle build 2026.27.11 with the same v14.3.10 FSD label and a September 22 date. No distinct driving change for that build was established in this review, so it belongs in the same version record unless stronger evidence supports a separate report. [4]
What remains unknown
The public notes do not identify a v14.3.10-specific driving fix, and the tracker records cannot show how the release performs in real traffic. They also cannot establish a completion date for the staged rollout or guarantee that a particular eligible vehicle will receive the build.
There is no verified basis in the sources reviewed here to claim lower intervention rates, better handling of a named scenario or a measurable safety improvement over v14.3.9. Those claims would require a Tesla statement with a defined comparison or transparent, repeatable test evidence.
What this means if you are considering a Tesla
This release highlights why a buyer should verify the exact car rather than rely on a model badge or a news headline. Two cars showing vehicle software 2026.27.10 can be on different FSD branches because one has HW4 and the other has HW3. A used-car listing that says only “FSD capable” also does not answer which computer is installed, whether FSD access is included with that vehicle, or what features are currently available in the buyer's region.
Before buying, check the Autopilot computer on the vehicle screen, confirm the current software and release notes, and verify FSD access for that exact car and account. For a purchase decision, treat capabilities available and demonstrated today as the baseline. Future improvements, items under Upcoming Improvements and staged regional releases should remain potential upside rather than promised value. [5][6][7]
Frequently asked questions
Is v14.3.10 the same as software 2026.27.10?
No. v14.3.10 identifies an FSD branch; 2026.27.10 identifies the broader vehicle software package. That package contains v14.2 Lite for supported HW3 Model 3 and Model Y vehicles, and v14.3.10 also appears under the later 2026.27.11 build. [1][3][4]
Should an HW4 owner install it?
Tesla does not allow owners to request a particular build on demand. When an update is offered, review the notes shown for your vehicle and follow Tesla's installation guidance. The compared public notes do not name a new v14.3.10-only driving feature. [1][6]
Does v14.3.10 add pothole avoidance?
The reproduced notes still place pothole avoidance under Upcoming Improvements. This report therefore does not treat it as a shipped feature. [1]
Does an unchanged changelog mean there are no fixes?
No. It means no specific new fix is identified in the FSD notes compared here. A particular fix or performance gain should be reported as confirmed only when there is separate supporting evidence.
Sources and update record
This report compares published release-note reproductions, independent installation tracking and Tesla's official owner guidance. It is not a TESERY road test. The build-specific notes are reproduced by an independent publisher; Tesla's support pages provide the official supervision and owner-interface guidance.
- Not a Tesla App: 2026.27.10 release notes
- Not a Tesla App: 2026.27.6 release notes
- Teslascope: 2026.27.10 installation tracking
- Teslascope: 2026.27.11 installation tracking
- Tesla: Full Self-Driving (Supervised) support
- Tesla: Software updates
- Tesla: Infotainment and Autopilot computer information
- Not a Tesla App: FSD release index
September 23, 2026: Initial publication. Compared the v14.3.9 and v14.3.10 notes, verified the HW4/HW3 branch distinction, documented the observed countries and added official in-car checking paths.
Related coverage: TESERY's earlier report on v14.3.9 and Automatic Collision Evasion.
