EVENT DOSSIER
The National Highway Traffic Safety Administration (NHTSA) has upgraded its investigation into brake defects in General Motors’ electric and non-electric models to the highest level of “engineering analysis,” involving over 1 million vehicles. Hundreds of accidents or fires have been reported, with at least six people injured. Initial complaints indicate that vehicle owners received alerts about “brake system failures.” General Motors attributes this to a break in the main shaft of the eBoost wire-controlled braking system, but NHTSA points out that the “immediate loss of brake assistance” revealed by the new report does not match the break in the main shaft, which may prolong the braking distance and increase the risk of accidents. The eBoost system has been used in models such as the Blazer EV, Equinox EV, Lyriq, and Honda Prologue since 2019.
通用汽车电动及非电动车型因刹车问题面临美国国家公路交通安全管理局（NHTSA）升级调查，涉及超 100 万辆车辆。NHTSA 将原本针对 2023 款凯迪拉克 Lyriq 的缺陷调查升级为最高级别的“工程分析”，此前已记录数百起事故或火灾及至少六人受伤。初步投诉显示车主收到“刹车系统故障”提示，通用汽车将其归因于"eBoost"线控刹车系统主轴断裂；但 NHTSA 指出新报告揭示的“即时刹车助力丧失”与主轴断裂不符，可能延长制动距离并增加事故风险。该 eBoost 系统自 2019 年起应用于 Blazer EV、Equinox EV、Lyriq 及与本田合资生产的 Honda Prologue 等车型，旨在通过电子方式调节不同驾驶模式下的刹车脚感。