Regulators gave the automaker until September 30 to answer inquiries on vehicles lacking human controls.
Tesla shares fell approximately 3.0% to $360.69 at 11:26 a.m. Eastern Time on September 28. The automaker faces a September 30 deadline to answer questions from federal safety regulators regarding its Cybercab certification.
The National Highway Traffic Safety Administration opened an inquiry after Cybercabs entered service in Austin. The agency is reviewing how Tesla certified a vehicle built without traditional human controls. Investigators are examining Tesla's technical data and its interpretation of federal safety standards, though the inquiry has not established any violation.
Tesla must submit its responses by September 30. Market observers note that investors are watching whether the Cybercab can clear regulatory review, expand production and attract paying customers.
Share prices can rise and fall. Past performance does not guarantee future results. This article is news, not investment advice.
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