Investigation now covers 3.2 million vehicles as regulators examine crashes tied to reduced camera performance.

NHTSA escalated its Tesla FSD investigation to an Engineering Analysis covering 3.2M vehicles after finding the system fails to detect degraded visibility from glare and fog.

U.S. regulators expanded a probe into the effectiveness of Tesla's Full Self Drive software at navigating in reduced visibility conditions.

A review of crashes show the FSD system may not detect common roadway conditions impacting camera visibility ...