Tesla put a car with no steering wheel on a public street in Austin on Wednesday. Federal safety regulators opened a file on it the same day.
The National Highway Traffic Safety Administration disclosed on September 4 that it had opened Audit Query AQ26002 into Tesla's Cybercab, covering an estimated 1,000 vehicles. The one-page resume is dated September 3 — the day Tesla began commercial deployment in Austin — and lists the trigger simply as "Public Information." The named investigator is Syed Rahaman; Otto Matheke signed as approver.
The question is narrow and unusual. Not whether the Cybercab has a defect, but whether Tesla's paperwork holds up.
What the filing actually says
Under US law, automakers do not submit vehicles for pre-approval. They self-certify that each model complies with every applicable Federal Motor Vehicle Safety Standard, affix a label saying so, and put it on the road. NHTSA checks afterward.
Tesla did exactly that. Per the resume, Tesla "notified the Agency that it certified those Cybercab vehicles as compliant with all applicable Federal Motor Vehicle Safety Standards," and said it "plans to gradually expand commercial deployment of the Cybercab to include additional vehicles and locations."
The complication, in the agency's words: "The vehicles lack permanently attached, conventional manual controls, such as a brake pedal, gas pedal, steering wheel, and mirrors."
So NHTSA will "examine the process and technical data on which Tesla relied when certifying the Cybercab," and — the operative line — "consider the extent to which Tesla's certification depended on determinations that certain FMVSS are inapplicable to the Cybercab."
That is the whole fight. Tesla did not claim its two-seater passes the standards that assume a driver. It appears to have concluded those standards do not apply to a vehicle with no driver.
NHTSA Administrator Jonathan Morrison framed the action as routine oversight, not a rebuke. "NHTSA fully supports the safe development and deployment of automated vehicles. But as the federal regulator, we need to ensure that all of our laws are followed," he said on September 4.
The same release conceded the awkward timing: NHTSA says it has eight rulemakings underway to modernize standards covering brake pedals, windshield wipers, lighting and rearview mirrors. "Until that work is completed, however, existing standards remain in force."
Why a wheel-free car strains the system
Self-certification works cleanly when a standard specifies a measurable outcome. It gets murky when a standard presumes hardware that no longer exists. FMVSS 111 governs rear visibility and mirrors. FMVSS 135 sets light-vehicle brake performance, including pedal-force tests. FMVSS 101 covers the location and identification of controls and displays. Each was drafted around a human at the controls.
A manufacturer facing that mismatch has two legal routes. It can certify compliance and argue that inapplicable provisions simply do not bind — Tesla's apparent choice. Or it can petition NHTSA for a temporary exemption under 49 CFR Part 555, which permits limited sales of non-compliant vehicles but caps deployment at 2,500 vehicles per year.
Tesla's engineering chief, Lars Moravy, said on X earlier this year that the Cybercab would not be subject to that cap, without elaborating. NHTSA has previously said Tesla had not applied. Tesla did not respond to Reuters' requests for comment.
"I don't think there is a reasonable interpretation that can be made to suggest that the Cybercab can comply with the Federal Motor Vehicle Safety Standards," Michael Brooks, executive director of the Center for Auto Safety, told Reuters.
Analysis: what a non-compliance finding would mean
An audit query is a compliance instrument, not a defect investigation. A defect probe asks whether a vehicle poses an unreasonable risk in the field. A compliance action asks whether the certification itself was valid. If NHTSA concludes the Cybercab misses an applicable standard, the remedy is a non-compliance recall plus statutory civil penalties. Neither is on the table today: AQ26002 is an opened file, not a finding.
Precedent runs against Tesla, but not decisively. Amazon-owned Zoox self-certified its control-free robotaxi; NHTSA investigated, and Zoox withdrew the claim. It then applied under Part 555 in August 2025, and on July 30, 2026 NHTSA granted the first commercial exemption of its kind for a passenger-carrying ADS vehicle — up to 2,500 units annually for two years, covering portions of eight standards: 103, 104, 108, 111, 135, 201, 205 and 208.
GM shows the other failure mode: it petitioned in February 2022 for the purpose-built Cruise Origin, waited years with no decision, and withdrew in 2024.
The scaffolding is also in flux. NHTSA formally withdrew its proposed AV STEP oversight program on June 26, 2026, betting instead on rewriting the standards outright and on a $5 million, three-year SAE-ITC consortium to build first-ever AV performance standards. If the rewrites land first, an argument that looks aggressive today could be moot by the time the audit closes.
Philip Koopman, a Carnegie Mellon engineering professor who studies AV safety, put the incentive plainly to Reuters: Tesla could offer a "creative interpretation" of the rules and "flood the market." That "could take NHTSA or state regulators years to resolve. Meanwhile, Tesla could be operating on public roads."
Bryant Walker Smith, a University of South Carolina law professor, was skeptical of the underlying capability: "No public information about Tesla's capabilities suggests that Tesla is anywhere close to being able to safely and reliably deploy an automated driving system over the wide range of conditions that would be required for a vehicle without conventional controls."
What to watch
Three things. Whether NHTSA issues an information request or special order and whether Tesla's response becomes public — that filing would reveal which standards Tesla deemed inapplicable. Whether Tesla expands past 1,000 units or into new cities while the audit is open; scale changes the recall math. And whether the eight FMVSS rewrites are finalized before the audit concludes.
Three former senior NHTSA officials told Reuters any clash could end in litigation. As one put it: "It does happen from time to time and NHTSA, importantly, has not always won these cases."
“I don't think there is a reasonable interpretation that can be made to suggest that the Cybercab can comply with the Federal Motor Vehicle Safety Standards.”— Michael Brooks, Executive Director, Center for Auto Safety