# NHTSA escalates Tesla FSD investigation to Engineering Analysis EA26002 covering 3.2M vehicles revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Incident: [NHTSA escalates Tesla FSD investigation to Engineering Analysis EA26002 covering 3.2M vehicles](/incidents/regulatory-action-2026-03-18-tesla.md)

_No events on file. Arc G is forward-only; the recorded event log accrues from Arc G adoption. For the current state of this incident, see the incident page._

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /incidents/regulatory-action-2026-03-18-tesla/history. REST: /v1/incidents/adccb2fd-9805-4f3f-8c71-df6f0429a220/history. HTML: [/incidents/regulatory-action-2026-03-18-tesla/history](/incidents/regulatory-action-2026-03-18-tesla/history)._