The National Highway Traffic Safety Administration (NHTSA) said the preliminary evaluation covers 2022-2023 model year vehicles over reports of failures of the front seatbelt to remain connected to the seatbelt anchor pretensioner while driving.

Both newer vehicles had insufficiently connected anchor linkages and neither incident involved vehicle collision with occupants wearing seatbelts, the agency said.

Tesla, which has disbanded its press office, did not respond to a request for comment.

In one complaint from Larkspur, California, a Tesla was moving at around 10 to 15mph and the auto braking system activated when the driver’s door on a large truck parked on the side of the street opened unexpectedly.

“With the sudden deceleration, my upper body flung forward and the force of my weight caused the seatbelt anchor on the lower seat to detach completely,” a complaint filed with the NHTSA said.

After the NHTSA opens a preliminary evaluation, it must decide whether to upgrade it to an engineering analysis before it can demand a recall.