Tesla Gets Extension to Respond to NHTSA's Cybercab Probe

Tesla has more time to answer federal regulators’ questions about the Cybercab, though not as much as it wanted. According to @scotsrule08 on X, the National Highway Traffic Safety Administration (NHTSA) has extended Tesla’s deadline to respond to its Special Order on the Cybercab’s federal safety certification.

Tesla asked for an eight-week extension to November 20, citing the “voluminous nature of the request.” NHTSA granted 30 days instead, moving the deadline from September 30 to October 30, 2026.

What NHTSA Wants to Know

The Special Order is part of the investigation NHTSA opened into the Cybercab just as public rides began in Austin last month. In its own words, NHTSA opened Audit Query 26002 on September 3 “to evaluate Tesla’s basis for certifying that its Cybercab vehicle complies with all applicable FMVSS,” or Federal Motor Vehicle Safety Standards.

NHTSA asked Tesla to respond to 21 requests in total. They range from Tesla’s plans to scale commercial Cybercab operations to more vehicles and cities, to the vehicle’s operating limits. Most focus on how Tesla self-certified a car with no steering wheel, pedals, or side mirrors.

Not a Tesla App

Regulators want to know how the Cybercab meets rules for turn signals, mirrors, rearview cameras, and foot-operated service brakes. They’re also asking whether temporary human controls were used during certification testing, and whether passengers can move the vehicle through the touchscreen.

The biggest question from NHTSA is why Tesla never applied for an exemption. Automakers building vehicles without manual controls usually petition NHTSA for one, which allows up to 2,500 vehicles per year, as Zoox did for its robotaxi. Tesla instead self-certified the Cybercab, and NHTSA wants a detailed explanation of how it complies with existing rules without an exemption. The agency proposed dropping some of those manual-control requirements in June, but current rules stay binding until the changes are finalized.

Here’s a full breakdown of the information NHTSA is asking Tesla to provide, courtesy of @SawyerMerritt:

What It Means for Cybercab Expansion

Commercial Cybercab rides currently remain exclusive to Austin, but Tesla appears to be preparing to launch the purpose-built vehicle in Houston, where nearly 200 have been spotted, and unsupervised Model Y robotaxis already operate. A large Cybercab nest has also been spotted in Miami, another active Robotaxi market.

Public Cybercab rides in Austin continue while the probe plays out. How NHTSA responds to Tesla’s answers after October 30 could determine how quickly the Cybercab expands beyond Tesla’s home base.