NHTSA Complaint #11687757 — 2020 HONDA ACCORD

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 4th occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 70 mph to 55 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident (8:09 am), I was in the right lane. Traffic was very light. The weather was overcast but dry. CMBS was on. ACC was on. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event