Key Highlights

  • The National Highway Traffic Safety Administration opened an audit query into Tesla's Cybercab hours after the vehicle began operating on public roads in Austin, Texas.
  • Federal safety rules currently require manual controls like brake pedals, though the Department of Transportation has proposed removing that requirement for vehicles designed to be autonomously driven.
  • The agency is using the same audit query process it applied to Amazon-owned Zoox in 2023, a process that ultimately preceded Zoox receiving a formal safety exemption in 2025.
  • Zoox received final approval for its exemption in July 2026 and began charging for rides in Las Vegas weeks later, though it remains capped at adding 2,500 vehicles per year to its commercial fleet.

A Rapid Regulatory Response

The United States' top automotive safety regulator has opened an investigation into Tesla's (NASDAQ:TSLA) decision to launch its new Cybercab on public roads without a steering wheel or pedals. The National Highway Traffic Safety Administration announced the probe on Friday morning, just hours after Tesla put the first Cybercabs on the streets of Austin, Texas. Federal vehicle safety regulations currently require manual controls such as brake pedals, though the Department of Transportation has recently proposed removing that requirement specifically for vehicles designed to operate autonomously.

NHTSA administrator Jonathan Morrison said in a statement that the agency fully supports the safe development and deployment of automated vehicles, but as the federal regulator must ensure all applicable laws are followed, describing the agency's approach as balancing innovation with safety oversight in order to maintain American Leadership in autonomous vehicle development. NHTSA said Tesla told the agency it had self-certified the Cybercab as compliant with all Federal Motor Vehicle Safety Standards, the traditional process by which automakers determine their own compliance. In its filing, the agency said it is opening the investigation specifically to examine the process and technical data Tesla relied on when certifying the Cybercab, including the extent to which that certification depended on determinations that certain federal standards do not apply to the vehicle.

A Familiar Regulatory Path

There is precedent for NHTSA's inquiry. In 2022, Amazon-owned autonomous vehicle company Zoox self-certified its own cube-like robotaxi, which similarly lacks a steering wheel and pedals. NHTSA subsequently opened what it called a special order seeking additional information from Zoox, followed by a formal audit query the following year, the same process now being applied to Tesla. While Zoox remained heavily in its testing phase at that time, the investigation slowed its path toward commercialization. Zoox had long maintained its self-certification process was sufficient, and in 2025 the agency granted the company an exemption to demonstrate, though not commercially operate, its technology.

Zoox subsequently went through the formal process and filed for a temporary exemption from eight Federal Motor Vehicle Safety Standards, receiving final approval in July 2026, which eliminated one of the last remaining regulatory hurdles standing in the way of a commercial robotaxi service. The exemption carries limits, capping Zoox at adding 2,500 vehicles annually to its commercial fleet over the following two years. Zoox opened its commercial service several weeks later and now charges for rides in Las Vegas.

Whether Tesla Faces a Similar Timeline Remains Unclear

Whether Tesla will face a comparably lengthy regulatory process is uncertain, given that Zoox navigated its path under both the Biden and Trump administrations. On Friday, NHTSA acknowledged it is in the process of updating portions of the Federal Motor Vehicle Safety Standards related to manual controls, describing the goal as unleashing American innovation while enhancing road safety, and said it looks forward to completing these updates and removing unnecessary barriers to autonomous vehicle innovation in the coming months. The agency emphasized, however, that existing standards remain fully in force until that work is completed.

Conclusion

The timing of the investigation, opened within hours of the Cybercab's public deployment, suggests federal regulators are moving more quickly to scrutinize Tesla's self-certification than they did with Zoox's comparable robotaxi years earlier, even as the underlying regulatory framework governing vehicles without manual controls remains in active flux. Whether Tesla can navigate the audit query process as smoothly as Zoox ultimately did, or faces a more prolonged path to full commercial operation, will likely depend significantly on how quickly the Department of Transportation finalizes its proposed changes to the manual control requirements.