Tesla began rolling out firmware 2026.27.200 on 1 September 2026, and it is the first build in the 2026.27 branch to carry a recall notice. The entry sits at the top of the release notes, above FSD and the Summer Update, and reads: "This software update includes the remedy for EU Recall Submission 2026_103555. It restores compliance with UNECE Regulation No. 135." It is listed for Model 3 and Model Y, and marked available worldwide.
What Regulation 135 actually covers
UN Regulation No. 135 sets the uniform provisions for approving vehicles with regard to their pole side impact performance. The approval test pushes the vehicle sideways into a rigid pole on the driver's side, and passing it is one of the type-approval requirements a car must meet to be sold in the EU.
That makes this an unusual recall notice. Pole side impact is normally a matter of structure and restraints — sill design, side curtain and thorax airbags, and the deployment thresholds that fire them. Tesla has not said which of those a software change touches, and the release note does not explain the mechanism.
The rest of the build is carried forward
Diffed against 2026.27.100.1, the build that took the Summer Update into FSD cars with Europe first, the recall notice is the only new entry. Every other heading — FSD (Supervised), Summer Update, Estimated Range, Preferred Routes, Grok Commands, Caraoke with Scoring, Custom Wraps, Camera Preview, Speed Cameras on Route, Web Browser, Security Improvements and the rest — appears in both, unchanged.
| 2026.27.100.1 | 2026.27.200 | |
|---|---|---|
| Released | 24 August 2026 | 1 September 2026 |
| FSD version | 14.2.2.6 | 14.2.2.6 |
| Recall notice | none | EU 2026_103555, UNECE R135 |
| Other release-note entries | 20 | the same 20 |
| Fleet share | about 0.8% | about 0.7% |
Anyone reading a feature list will therefore conclude that nothing changed. The compliance item is the release.
What we could not verify
Three gaps are worth stating plainly. No Tesla press release accompanies this, and the submission number appears only in the release notes. No notice from the Dutch RDW or any other EU approval authority has surfaced. And no outlet has reported the recall — what follows is Tesla's own text, not journalism about it.
The affected population is not known either. The release note names Model 3 and Model Y without model years or a vehicle count, which is the opposite of how a national recall is normally published.
What owners should do
Nothing beyond taking the update. An over-the-air remedy is the point of the notice: the fix arrives with the software and there is no service appointment attached. If you drive a Model 3 or Model Y in Europe and 2026.27.200 is offered, installing it is what closes the recall on your car.
For where the branch stands, FSD 14.2.2.6 remains Hardware 4 only, Europe went first, and penetration is still under one percent — NotATeslaApp recorded 2026.27.200 on about 0.7% of the tracked fleet with 49 installs on the day after release. This is an early build, and most European cars are still weeks away from seeing it.
Update: 2026-09-03
As of 3 September 2026, NotATeslaApp's tracker records 2026.27.200 on about 1.0% of the tracked fleet — 124 cars — up from the roughly 0.7% and 49 installs recorded when this article was published. Ninety cars took the build across 2 September, so the rollout is widening rather than stalling, though it remains an early-stage release.
The same page lists the build for Model S, Model 3, Model X, Model Y and Cybertruck — a wider set than the recall notice itself, which names only Model 3 and Model Y. The R135 remedy therefore ships inside a build that also reaches cars the notice does not name.