NHTSA expands investigation into GM's eBoost brake failures

In the United States, the NHTSA has expanded its investigation into GM's eBoost braking system after receiving numerous reports of brake failures affecting over 1.1 million vehicles. The investigation began in 2024, initially focusing on the Cadillac Lyriq, but now includes various GM models. Concerns center around potential spindle fractures that may lead to a loss of brake assist, contradicting GM's assurances about safety features remaining operational.