On a quiet road, with no noise and no warning, the front suspension of a Tesla Model 3 or Model Y could simply detach — leaving the driver with no directional control of the vehicle. That alarming possibility is now the subject of a formal preliminary investigation by the United States National Highway Traffic Safety Administration (NHTSA), which announced it is probing nearly 1.2 million Tesla vehicles after receiving 156 complaints about a specific structural failure. The investigation covers the Model 3 built between 2018 and 2020, and the Model Y produced between 2021 and 2023 — two of Tesla's highest-selling vehicles globally, found on roads from California to South Korea to the Netherlands.

According to the NHTSA's Office of Defects Investigation, the core problem involves the detachment of the front lower lateral link, a critical component that connects the wheel assembly to the vehicle's subframe. In most of the cases reviewed, the failure occurred with no advance warning whatsoever, though a minority of drivers reported hearing unusual noises beforehand. Regulators have stressed that no crashes, injuries, or fatalities linked to this specific defect have been recorded so far. However, the investigation is significant because it follows two earlier Tesla suspension recalls — one in 2021 covering roughly 2,791 Model Y and Model 3 vehicles, and a subsequent recall addressing a loose fastener that could cause a lateral link to separate from the subframe.

The NHTSA has noted that the complaints in the current probe do not appear to be directly connected to those previous defects, suggesting this may represent an entirely distinct engineering problem. That distinction matters enormously.