Tesla opens 275-square-mile Robotaxi zone in San Antonio

By Sophie Lindqvist

Tesla began offering Robotaxi rides in San Antonio at 5 a.m. local time Monday across an advertised 275-square-mile service area, its largest at launch. According to Not a Tesla App, the zone covers downtown and nearly everything inside Loop 410. It also stretches north to Loop 1604 between I-10 and US-281.

What did Tesla actually announce?

Tesla announced the launch in an X post. Its Robotaxi account wrote: “Robotaxi available in San Antonio starting tomorrow, 5am.” The announcement established a start time and a map, but left fleet size, daily availability, vehicle configuration and safety oversight unstated.

Neither the announcement nor the service description explains how quickly vehicles will enter the zone, how long they will operate each day, or who will be responsible for passenger safety.

How large is the San Antonio service area?

The 275-square-mile figure is an advertised service area, not a measured footprint of active rides. A separate analysis found Tesla's actual pickup and drop-off zones in Texas were 22% to 41% smaller than advertised. That discrepancy leaves the launch's usable geography uncertain.

Not a Tesla App listed Austin at 272 square miles, Houston at 254 and Fort Worth at 143. San Antonio's 275-square-mile claim therefore exceeds all three, though only narrowly over Austin. The report did not explain whether each city used an identical boundary method.

That figure matters commercially only if drivers can reach the mapped streets and riders can obtain vehicles throughout it, rather than merely enter a much smaller operational core.

What remains undisclosed?

Tesla disclosed none of the operating details needed to judge service maturity. The company did not state fleet size, operating hours, whether San Antonio receives modified Model Y vehicles or two-seat Cybercabs, or whether human safety monitors will ride along.

Not a Tesla App described the service as unsupervised and reported that it starts with Model Ys. Those details come from a secondary tracking account, not Tesla. Without a fleet count or service-hours schedule, riders cannot yet infer how many vehicles are available or how quickly the service may scale.

The Robotaxi Tracker listed 24 vehicles in Fort Worth and five in Miami, versus more than 400 registered in Austin. Registration does not establish active availability, service hours or utilization. The Austin figure also covers a city that began operating in June 2025, while San Antonio starts from a smaller disclosed base.

For riders, those omissions matter more than the headline area because vehicle availability, service duration and the presence of a safety monitor will shape wait times, usable hours and the credibility of the unsupervised model.

How does San Antonio fit Tesla's rollout?

San Antonio is Tesla's fifth Texas Robotaxi city, following Austin, Dallas, Houston and Fort Worth. Fort Worth launched Nov. 2. Tesla also offers limited service in Miami and Orlando, while its San Francisco Bay Area ride-hailing operation still uses human drivers because Tesla lacks permits for driverless rides there.

Austin service began in June 2025 and has operated without safety monitors since January, according to the report. Tesla's own data showed fewer paid-customer miles in the second quarter than in the first quarter. The supplied figures gave no absolute mileage totals, so the size of that quarterly decline remains unclear.

The company therefore enters San Antonio with a broad advertised footprint but without publishing the vehicle count or deployment schedule required to evaluate that footprint.

What does Waymo change?

Waymo already offered driverless rides in San Antonio before Tesla's launch. It recently resumed service there after a five-month pause that followed incidents in which its vehicles became stuck on flooded roads. Tesla therefore entered a market with an established driverless operator, not an empty service territory.

Neither Tesla nor Waymo disclosed a comparable San Antonio fleet count, utilization rate, operating schedule or fare, so the available evidence cannot establish which service currently carries more passengers.

What does the Cybercab shift change?

According to the report, Tesla is shifting its Texas factory toward Cybercab production. The company plans to wind down Cybertruck output by mid-2027 and has asked NHTSA to keep its Cybercab safety-certification answers confidential.

The retooling provides an industrial rationale for adding Cybercabs eventually, but it gives no production volume, factory capacity figure or near-term allocation to San Antonio.

Tesla's request for confidential safety-certification answers adds another unresolved variable. The report did not disclose what those answers cover or when the factory shift will affect vehicle supply.

What should the next disclosure show?

The next useful disclosures are concrete: active vehicle count, daily hours and Model Y or Cybercab deployment.

Until those figures or comparable Waymo data emerge, Tesla's 275-square-mile launch demonstrates advertised reach, not proven fleet capacity, while Waymo remains the established driverless competitor in the same city.