The agency has previously investigated earlier versions of Smart Summon, which is meant to let a Tesla vehicle park itself or fetch a driver via remote app command.

The National Highway Traffic Safety Administration's is focused on safety concerns related to the "Actually Smart Summon" (ASS) feature.

The National Highway Traffic Safety Administration is investigating 2.6 million Tesla vehicles over crashes involving the "Actually Smart Summon" feature. The feature lets users move cars remotely. The probe examines the feature's maximum speed,

The National Highway Traffic Safety Administration announced it is investigating nearly 2.6 million Tesla vehicles over a remote driving feature.

The National Highway Traffic Safety Administration is probing about 2.6 million Teslas after regulators discovered that a feature on multiple vehicle models was tied to crashes. The feature, known as "Actually Smart Summon" is intended to have the car park itself and pick up its owner using a button on the Tesla app.

Tesla did not respond to a request for comment from The Associated Press on Tuesday. One driver filed a complaint after a crash while using Tesla’s “Actually Smart Summon” technology and NHTSA is looking into another three similar incidents based on media reports,

Tesla stock was edging up in premarket trading Wednesday having dropped in the previous session after the National Highway Traffic Safety Administration launched an investigation into a new feature on its vehicles.

The National Highway Traffic Safety Administration (NHTSA) is investigating 2.6 million Tesla vehicles due to reports of accidents related to the Smart Summon and Actually Smart Summon features.