Senators Markey and Blumenthal question Tesla’s FSD safety statistics in letter to NHTSA

Tesla’s “Full Self-Driving” (FSD) driver-assistance system is facing renewed political scrutiny after two U.S. senators raised concerns that the company’s published safety data may not fully or fairly represent the risks associated with the technology, according to a report published June 17.

In a letter dated June 16 to NHTSA Administrator Jonathan Morrison, Senators Edward Markey and Richard Blumenthal said Tesla has used “misleading and incomplete” statistics to promote FSD. The senators’ letter, as summarized in the report, focuses on the way Tesla uses performance and safety figures to support its claims about the system’s effectiveness.

The senators’ complaint centers on statistics that are presented to the public in connection with FSD. They argue the figures do not provide a sufficiently complete picture of safety outcomes, implying that consumers and regulators could be drawing conclusions from an incomplete set of data.

The report does not provide details on the specific datasets the senators challenged, nor does it quote a direct Tesla response. It also does not indicate whether NHTSA has opened a formal investigation, requested additional materials, or taken any action beyond receiving the correspondence.

For Tesla, FSD is a central product narrative. The company’s ability to expand access to and usage of automation features depends in part on public confidence, regulatory clarity, and the framing of how often and under what conditions the system requires human oversight. Any dispute over what safety statistics show, and what they leave out, can complicate that narrative.

The political pressure also lands in a broader policy environment in which federal transportation agencies and lawmakers have increasingly focused on the gap between marketing language for driver-assistance tools and the actual operational limits of those tools. NHTSA’s role in overseeing vehicles and safety communications means that letters like this can shape what regulators ask companies to substantiate.

Still, key questions remain unanswered in the report itself. It does not lay out what exact numbers or methodologies Tesla used, what portion the senators consider inaccurate or missing, or what remedies or timelines they asked NHTSA to pursue. Without those specifics, it is not possible to assess whether the dispute is primarily about data selection, statistical methods, definitions of incidents, or how Tesla characterizes system behavior.

Investors and industry observers are likely to watch for any follow-up from NHTSA, including requests for documentation or an assessment of whether current disclosure practices meet expectations for accuracy and completeness. They will also watch for Tesla’s own response, such as clarifying the methodology behind its FSD safety reporting or revising how the company communicates uncertainty and performance boundaries to the public.