Rivian Faces US Probe Over Part Issue Causing EVs to Swerve (1)

US auto safety regulators have opened an investigation into Rivian Automotive Inc. over the potential failure of a part that could lead drivers to lose control of their electric vehicles.

The National Highway Traffic Safety Administration said it received two complaints from Rivian owners describing separation of the so-called rear toe link, a suspension rod that connects the wheel hub to the vehicle chassis. Both incidents caused the EVs to “swerve across multiple lanes of traffic,” one of which resulted in a collision, the agency said in documents posted to its website.

The probe, known as a preliminary evaluation, covers ...