The U.S. National Highway Traffic Safety Administration said Thursday it has advanced its investigation into Tesla’s (NASDAQ:TSLA) driver assistance technology to a more comprehensive engineering analysis, according to the federal auto safety regulator.
The review involves approximately 3.2 million Tesla vehicles spanning several different models.
Moving the probe to this stage signals a deeper examination of the system and could ultimately lead to a vehicle recall or other regulatory action if authorities determine that a safety defect is present.