Brake problems in GM EVs draw greater federal scrutiny | TechCrunch

The United States' top automotive safety regulator, the National Highway Traffic Safety Administration, has significantly escalated its ongoing investigation into braking system malfunctions across more than one million General Motors vehicles.

This inquiry, which encompasses several electric vehicle models manufactured in collaboration with Honda as well as certain traditional internal combustion vehicles, was recently upgraded to an engineering analysis. This represents the government agency's highest level of investigation and often serves as the final step before the government mandates an official safety recall. The escalation follows hundreds of reported incidents, including over twenty accidents or fires and at least six documented injuries related to the defect.

The regulatory probe originally began in early 2024 after drivers of various electric luxury SUVs reported receiving failure notifications upon starting their vehicles or stopping. While the automaker’s internal assessments blamed the malfunction on a fractured component within its electronic brake-by-wire setup, federal officials discovered that many drivers experienced an immediate loss of braking assistance while actively trying to slow down. This discrepancy has prompted deeper federal scrutiny into the electronic braking technology, which replaces mechanical components with computerized signals. Despite harrowing accounts of drivers crashing into buildings or deliberately steering into curbs to halt their vehicles, the manufacturer asserts that the technology remains safe and plans to cooperate fully with the government's continued analysis.