The U.S. National Highway Traffic Safety Administration (NHTSA) has opened an investigation into Tesla's certification that its new Cybercab meets all applicable Federal Motor Vehicle Safety Standards (FMVSS).
The probe, formally designated as an Audit Query, was opened on Sept. 3 and covers an estimated 1,000 Cybercab vehicles, according to an NHTSA investigation document made public on Friday. It will examine the process and technical data Tesla relied upon when certifying the Cybercab, as well as related issues. Tesla began commercial deployment of a small number of Cybercab vehicles in Austin, Texas, on Thursday and notified the agency that it had certified the vehicles as compliant with all applicable FMVSS. Tesla also told the NHTSA that it plans to gradually expand commercial deployment of the Cybercab to include additional vehicles and locations.
The vehicles lack permanently attached conventional manual controls, such as a brake pedal, gas pedal, steering wheel and mirrors, according to the NHTSA.
The agency said the inquiry will examine, among other issues, the extent to which Tesla's certification depended on determinations that certain FMVSS are inapplicable to the Cybercab.
In the United States, the NHTSA establishes vehicle performance requirements, while automakers must certify that their vehicles meet applicable standards before entering the U.S. market, subject to agency oversight to confirm compliance. The NHTSA said it conducts investigations when certified vehicles appear not to adhere to those requirements.
U.S. regulator opens probe into Tesla Cybercab self-certification
A super El Nino event officially formed in September 2026, monitoring data from China's National Climate Center showed on Friday.
Zhao Junhu, chief forecaster at the center, said that the equatorial central and eastern Pacific entered an El Nino state in May this year, with sea surface temperatures in the key monitoring region rising rapidly and continuously from May to September.
The three-month running mean of the sea surface temperature (SST) index in the monitoring region has remained above 0.5 degrees Celsius for five consecutive months. The index exceeded 2.5 degrees Celsius for the July-September period, meeting the threshold for a super El Nino event.
The event is classified as an eastern Pacific-type El Nino, in which the warmest sea surface temperatures are concentrated in the equatorial eastern Pacific.
Monitoring data showed that sea surface temperatures across most of the equatorial Pacific in September were above average of the same period, with temperatures in the warm pool of the eastern Pacific exceeding the climatological average by more than 3 degrees Celsius.
The SST index for the monitoring region reached 2.94 degrees Celsius in September, up 0.35 degrees Celsius from August. The average index for the July-September period stood at 2.54 degrees Celsius.
Based on a combination of domestic and international dynamical climate models and statistical forecasting methods, the center expects sea surface temperatures in the equatorial central and eastern Pacific to continue rising over the next three months, peaking in late autumn or early winter, Zhao said.
The event is expected to become the strongest El Nino on record since systematic monitoring began, he added.
Super El Nino event formed in September: China's National Climate Center
