The NHTSA opened an investigation after complaints that a suspension component could detach, potentially causing loss of steering control in Model 3 and Model Y vehicles.

The National Highway Traffic Safety Administration (NHTSA) has opened a formal investigation into a possible defect affecting up to 1.2 million Tesla Model 3 and Model Y vehicles, after owners reported that a suspension component could detach and lead to a loss of steering control.

What sparked the investigation

The probe was triggered by a series of consumer complaints and warranty claims that described a failure of the front lower control arm bolt, which could separate from the suspension knuckle under certain driving conditions.

Potential safety impact

If the bolt disengages, the wheel may lose its steering linkage, creating an immediate risk of loss of vehicle control. Tesla has warned drivers to monitor for unusual noises or vibrations from the front suspension.

  • Check for any clunking sounds when turning or driving over bumps
  • Inspect the front suspension for visible looseness or wobble
  • Schedule a service appointment if any irregularities are noticed

Tesla’s response

Tesla issued a statement saying it is cooperating fully with NHTSA and that it has not identified a widespread manufacturing flaw. The company noted that it has already performed a voluntary recall of a limited batch of vehicles to replace the affected bolts.

Next steps in the probe

NHTSA will review repair records, conduct its own testing, and may issue a formal recall if the agency determines the defect poses a unreasonable safety risk. Owners of affected models are advised to stay alert for service notifications.

For more details, see Inc. coverage of the federal probe into Tesla’s suspension issue.