EVwire brief: Tesla has expanded its Robotaxi service area in Austin, Texas, to an estimated 440 square miles (1,140 square kilometers), making it the largest geofence in Tesla's network once again.
Tesla's official Robotaxi account announced on X that the bigger Austin service area is now live, sharing a map of the old and new geofences. The new zone pushes out in nearly every direction except north, reaching past Manor in the northeast, toward Bear Creek and Barton Creek in the west, down to Manchaca and Hays in the south, and past State Highway 130 in the southeast (our read of the map).
Here's the map Tesla shared on X:
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Based on our read of Tesla's map, scaled against the roughly 272-square-mile (704 km²) geofence it replaces, the new Austin service area is about 62% larger than before. At its widest points, it runs roughly 27 miles (44 km) both east to west and north to south.
That puts Austin back ahead of San Antonio, whose roughly 275-square-mile launch geofence had become Tesla's largest just hours earlier. We covered San Antonio’s Tesla Robotaxi launch in the article below:
Austin is also where Tesla's Cybercabs are already carrying the public. Tesla opened Cybercab rides across its Austin geofence on September 4, and the purpose-built two-seater now accounts for 573 of the vehicles registered to Tesla's Robotaxi fleet in Texas. Tesla's post did not say whether Cybercabs will serve the full expanded area from day one.
Here's how the old and new Austin geofences look on Google Earth:

An estimate of Tesla’s old and new Austin geofence, as seen on Google Earth.
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Context:
Austin has been Tesla's Robotaxi proving ground since the service launched there on June 22, 2025, with a geofence of roughly 20 square miles. Its last expansion came in late October, around the same time Tesla grew its Houston service area about tenfold. The network itself has been growing just as fast, with Tesla launching in Fort Worth a week ago and San Antonio today, bringing its unsupervised Robotaxi service to eight US cities.
Tesla's Austin fleet and operating hours are scaling alongside the map. Vehicles registered to Tesla's Robotaxi service in Texas topped 1,000 units in late October and now stand at 1,282, per Texas Department of Motor Vehicles records. Austin rides also run from 5 a.m. to 2 a.m., and Tesla said during its Q3 2026 earnings call that it is aiming to run Robotaxi around the clock by the end of 2026.
Source: Robotaxi on X
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