Tesla sent a push notification to Robotaxi riders in Austin last week that read: "Cybercab fleet has doubled: more rides available." Tesla publishes no fleet data, so that message is the closest thing to a first-party number the programme has produced since launch. For once it can be checked against a count somebody else collected, and the two agree closely enough to be interesting.
What the notification said, and what the registrations show
Teslarati reports that Cybercab availability rose from 58 units on the Monday to 125 by the Friday — 21 to 25 September. Separately, TexasAVTracker, a volunteer project logging Texas DMV registrations, put Cybercab registrations at 69 on 24 September and 126 on 26 September. On the same day the combined Texas robotaxi fleet passed 500 for the first time, at 546 vehicles.
| Measure | Figure | As of |
|---|---|---|
| Cybercabs available for rides | 125 | 25 Sep 2026 |
| Cybercabs registered in Texas | 126 | 26 Sep 2026 |
| Model Y robotaxis registered in Texas | 420 | 26 Sep 2026 |
| Total Texas robotaxi registrations | 546 | 26 Sep 2026 |
The number worth noticing is the gap that is not there
125 against 126. The two figures come from different places and count slightly different things, but they land close enough to say something the Austin fleet has not been able to say before: essentially every Cybercab Tesla has registered appears to be carrying passengers.
That is not how the rest of the fleet behaves. Six days before the doubling, this site reported that 476 robotaxis were registered in Texas and eight had carried a passenger in Austin in the previous seven days. 409 of those registrations were Model Y. Put the two pictures side by side and the pattern is stark: the Model Y robotaxis are registered and largely idle, while the Cybercabs are registered and working.
That also reframes the collapse to eight. It was read at the time as the service contracting. On these numbers it looks more like Tesla moving riders onto the purpose-built car and letting the retrofitted Model Y fleet sit — a substitution rather than a retreat. The caveat we published then still stands: a tracker that misses a car cannot tell "not running" from "not seen".
What is still not established
Three things, and they matter.
The metrics are not identical. "Available for rides" is what the app surfaced to riders; "registered" is a DMV record. A near-match between them is suggestive, not proof of a one-to-one relationship.
The provenance is thin. The 58 and 125 figures come from rider reports of an in-app message, and the registration counts come from volunteers. Tesla has confirmed the doubling in the notification itself, but not the integers.
And none of it is ridership. Vehicle count is an upper bound on service, not a measure of it. Tesla has published no trip numbers, no utilisation and no waiting times, and the reported motivation for the expansion — that Cybercab wait times had become long — is itself uncorroborated.
What a European reader should take from this
Nothing changes on this continent. Cybercab operates only in Austin, Tesla has said deployment to further US cities will come "in the coming months", and on Europe the company has offered only Musk's "hopefully soon". A car with no steering wheel and no pedals needs an EU type-approval route that does not yet exist for it.
What the week does show is a production and deployment ramp that is real and fast. Doubling a fleet in four days is a manufacturing claim as much as an autonomy one, and it is the first hard evidence that the unboxed line in Texas is feeding cars into service rather than into a lot.
Update: 2026-10-03
The registration counts in the table above have moved, and in one direction only. By 2 October 2026 the Texas DMV autonomous-vehicle registry listed 158 Cybercabs against 126 on 26 September, taking Tesla's Texas total to 578; the live registry read 169 Cybercabs and 589 Tesla vehicles when checked for this update. The Model Y figure has not moved at all — 420 on 26 September and 420 still. Every vehicle Tesla has added in Texas since then is a Cybercab, which puts the substitution reading above on firmer ground than the single week it originally rested on. The registry is a live feed and the Cybercab figure changes daily. Sources: Texas Robotaxi Database.