Federal regulators are expanding an investigation into General Motors after receiving hundreds of reports of brake system failures in over 1.1 million vehicles. The scrutiny centers on GM’s eBoost brake-by-wire system, which has been linked to at least 22 crashes. Affected models include GM’s own electric vehicles as well as cars built for Honda and Acura.
The issue stems from a potential spindle fracture in the eBoost system, which can occur while driving. GM insists the vehicle retains critical safety features—antilock brakes, traction control, and stability control—until it comes to a complete stop. However, the National Highway Traffic Safety Administration’s Office of Defects Investigation (ODI) says it has received multiple reports contradicting this claim, alleging immediate loss of braking after eBoost failures.
The ODI has documented 227 incident reports, with 745 total incidents when including GM’s internal records. Twenty-two crashes have resulted, injuring six people across five incidents. No fatalities have been reported so far.
