Tesla's 2026.17.5 Update Merges Europe's FSD Branch With the Spring Update

Tesla's European FSD (Supervised) rollout has spent two months running on its own software branch, separate from the Spring Update that North American owners already had. The current European build, software 2026.17.5, changes that by merging the dedicated EU FSD branch with the 2026.14 Spring Update branch into a single install. For owners in the Netherlands, the first country to get FSD (Supervised) approved, it is the first real catch-up release since the system went live in April. Dutch owners started reporting 2026.17.5 this week, and it is arriving as a staged first wave to early-access cars rather than to the whole fleet at once.

What the branch merge actually fixes

Until 2026.17.5, a Tesla in Europe could be on one of two parallel software branches. Mainstream cars ran the 2026.14 Spring Update. FSD subscribers sat on a dedicated EU homologation branch built to satisfy the Dutch RDW approval, and that branch did not carry the 2026.14 feature set. So the owners paying for the most advanced driver assistance were missing general software improvements that non-FSD owners already had.

The unified build folds those two together. Basenor reports 2026.17.5 as the release where "FSD and Spring Update 2026.14+ branches merged into one install," and Dutch owners on the Tweakers forum note the update "includes Spring Update 2026.14.3 per release notes." That is the headline. EU FSD subscribers now get the Spring Update feature set, putting them roughly on par with US and Canadian owners rather than a release cycle behind.

One wrinkle is worth stating plainly. Dutch owners report they remain on a special RDW homologation branch even after the merge, because the Netherlands runs on terms negotiated with the regulator. So "merged" means the feature gap closes. Europe and North America still run different code, and the homologation constraints stay.

Versions, and what they are not

The version picture across reports is messier than a single number suggests. The European debut in April shipped on software 2026.14 with FSD app version 14.2.2.5, per Not a Tesla App. The current June build is 2026.17.5, and it carries FSD app version 14.2.2.6, a small bump from 14.2.2.5. That v14.2.2.6 figure is now confirmed by Basenor and corroborated by the Tweakers owner thread, so it is no longer just community chatter, though the specific X posts that first flagged it remain community sourcing.

Two version strings that circulate nearby are not the European build. A v12.3.3 reference points to the 2024 first "supervised" version, per InsideEVs, and the v14.3 and v14.3.3 strings that appear in some headlines are not what the Dutch 2026.17.5 build runs. The software-version number has also stepped over time, from 2026.14 in April to 2026.17.5 in June, so there is no fixed answer for "the EU build is X," only a current one.

The Dutch release notes describe targeted tuning for the homologation branch: parking improvements, fewer driver-monitoring nags, and better handling of dual traffic lights. The build also keeps the features introduced at launch on 14.2.2.5, including the EU-exclusive "FSD (Supervised) Stats" screen with a percentage-of-distance gauge, a daily streak counter, and a monthly usage graph, plus the European "Max Speed" and "Max Speed Offset" controls that replace the US profile names.

One thing the European branch still lacks is the “Hey Grok” assistant that arrived on the wider fleet with 2026.20. It is not in the Dutch FSD build, and owners say they miss it. The homologation branch delivers FSD while trailing the consumer software on newer features. For now, Europe's FSD drivers are the ones without Grok.

Still a Level 2 system

The milestone is real, and it does not change what the system is. FSD (Supervised) in Europe is an SAE Level 2 driver assistance system, approved by the RDW under UN Regulation R-171 (DCAS). Hands stay on the wheel, eyes stay on the road, and the driver is responsible at all times. Activation requires a tutorial video and a short safety quiz, a condition tied to the RDW deal.

That is a different product from what some headlines imply. TechCrunch explicitly contrasts the supervised system that launched in Europe with "FSD Unsupervised," which has not launched here. Nothing in 2026.17.5 moves the European product up the autonomy ladder. The branch merge changes software distribution and feature parity. It is not a regulatory upgrade. AI4 hardware remains required for the Dutch rollout, and access runs on a $99-per-month subscription. Tesla counted roughly 1.3 million paying FSD customers worldwide in its Q1 2026 earnings, per TechCrunch, across pricing tiers rather than the monthly plan alone.

Who gets it, and who is still waiting

The Netherlands was first to type-approval, granted April 10, 2026, with rollout to early testers a day later, and it is also first for the unified build. The approved set has since grown. By early June, Basenor lists the Netherlands, Germany, Norway, Estonia, and Lithuania as approved, with the UK, France, Spain, and Portugal among roughly a dozen markets still pending. That is a timeline progression rather than a contradiction. TechCrunch in May had only the Netherlands and Lithuania live, and Electrek's April projection of Germany, France, and Italy as "next" was a forecast. Of that trio, only Germany is confirmed approved so far; France and Italy remain pending.

The rollout inside the Netherlands is itself staged. 2026.17.5 is reaching early-access owners first, the same first wave that surfaced the build on the Tweakers owner forum and on X this week, with wider availability expanding over the following days as Tesla watches the data. A Dutch FSD subscriber who does not see it yet is still in the queue for it.

The reason the community frames 2026.17.5 as potentially "unblocking everyone in the waiting room" is mechanical. Once every approved market can be served from one unified build, shipping to already-cleared countries gets simpler. The merge does not approve new countries. It removes a packaging step for the ones already cleared, and that framing is a community read. Tesla has not committed to it.

AutonomyEV's opinion

This is a genuine milestone for European Tesla owners, and a good one. The split-branch situation was an odd penalty, where the customers paying for the headline feature were the ones stuck on older general software. Closing that gap is the right outcome, and it signals Tesla is now treating Europe as a maintained release target rather than a one-off homologation exercise.

We would temper the excitement on two fronts. First, the language matters. Nothing here makes the car self-driving, and the distance between "feature parity with North America" and "autonomous" is the whole story of this category. European DCAS keeps the driver-monitor strict, and owners say notably so. A strict monitor is arguably a safety asset for a Level 2 system rather than an irritation. Second, the country count is still small and the "unblocking everyone" claim is a community read with no Tesla commitment behind it. Five approved markets, with the UK, France, Spain, and Portugal still pending, is a meaningful start, with most of the continent still ahead. The unified build is the plumbing that makes faster expansion possible. Whether the expansion actually accelerates is the thing to watch over the summer.

Source notes

• Basenor, Tesla Update 2026.17.5, supports: 2026.17.5 merges the EU FSD branch with the 2026.14 Spring Update into one install, carries FSD app v14.2.2.6, and lists NL/DE/NO/EE/LT approved with UK/France/Spain/Portugal pending.
• Not a Tesla App, FSD (Supervised) rollout in the Netherlands, supports: RDW approval April 10, 2026, rollout from April 11, FSD app v14.2.2.5 at debut, AI4 hardware required, and the mandatory tutorial plus safety quiz.
• Electrek, FSD Supervised approved in the Netherlands, supports: the explicit SAE Level 2 classification and approval under UN Regulation R-171 (DCAS).
• InsideEVs, Tesla's FSD is finally approved in Europe, supports: Netherlands-only first approval, the EU Max Speed and Max Speed Offset controls, and v12.3.3 as the 2024 first supervised version.
• Not a Tesla App, new stats screen and update 2026.14, supports: the EU FSD debut on software 2026.14 and the EU-exclusive FSD (Supervised) Stats screen on build 14.2.2.5.
• TechCrunch, FSD is creeping into Europe, supports: Lithuania as second market live by May 20, the contrast with FSD Unsupervised, the $99/month price, and roughly 1.3M paying FSD customers per Q1 2026 earnings.
• Tweakers owner forum, 2026.17.5 NL rollout thread, supports: community reports that 14.2.2.6 ships in 2026.17.5, includes Spring Update 2026.14.3, runs on the special RDW homologation branch, and targets parking, driver-monitoring, and dual-traffic-light tuning.