Warning problems of the 2025 Honda Civic

A complaint is being filed regarding a **2025 Honda Civic** involving failure to diagnose and repair a safety-related suspension defect during the warranty period. While under warranty (~20,000 miles), a **clunking noise from the rear suspension** was repeatedly reported to tamaroff Honda [xxx] ). Despite multiple service visits and complaints to both the dealership and american Honda (case #xxx and #xxx), no proper diagnosis or repair was performed. After continued inaction, another Honda dealership identified a **broken rear shock absorber with an active fluid leak**, a safety-critical defect affecting vehicle stability and control. This condition existed and was reported during the warranty period but was dismissed. There is also a pattern of complaint mishandling, including lack of follow-up and unresolved case activity. Requests for service records and complaint documentation have not been fulfilled. This complaint requests investigation into the safety risk and failure to diagnose and repair a known defect during warranty. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I am filing a formal safety-related complaint regarding my 2025 Honda Civic sport touring hybrid and the performance of its driver assistance systems. This vehicle uses a camera-only driver assist and lane keeping system. I previously owned a 2018 Honda Civic touring that used both radar and camera. The earlier radar+camera system performed significantly better, maintained the lane more accurately, and provided smoother, more predictable behavior. The 2025 camera-only system frequently: – drifts within the lane – loses lane tracking unexpectedly – requires frequent driver intervention – feels less stable at highway speeds in my opinion, the newer vehicle’s system represents a downgrade in functional safety compared with prior-generation Honda systems. This change was not disclosed during the sales process, and many owners may assume newer models offer equal or better driver-assist performance. My concern is that removal of radar and reliance on camera-only sensing has resulted in degraded lane keeping performance that could increase crash risk due to unexpected disengagement or poor lane centering. I request this information be reviewed as part of consumer safety monitoring of driver assistance systems. I request this information be reviewed as part of consumer safety monitoring of driver assistance systems.

I've previously reported the cmbs (collision mitigation braking system) and rdms (road departure mitigation system) warning messages that have been appearing too frequently. Today is the day it finally happened, my wife was driving on the highway when auto cruise control with lane keep assist set at 66 on the passing lane, with a truck to the right. Halfway passing the truck on auto cruise control with lane keep assist, our Honda suddenly automatically braked (went from 66mph to ~56mph, there were no vehicles in front of her). She urgently took back control and sped up as the warning lights flashed (collision mitigation braking system problem - 60mph and road departure mitigation system - 58mph, pictures attached) and the driving assist features that were originally on all became disabled. All of this happened at about the same time in a manner of ~3 seconds. She was lucky that no one was behind her at that moment, and she did not get into an accident or worse! Honda has done nothing to fix this issue, and we have already taken the vehicle to the dealership's service 3 times already. Please expand the investigation to all Honda vehicles that uses their driver assistance system including models of newer years! this is really dangerous!! I've included photos of many of the previous times the error/warning message has appeared, and I've included the photo of the error/warning message that appeared right after incident occurred today. These error/warning messages has come up at least over 50+ times now since I've owned this car.

Unusual behavior with the "driver assistance system", specifically cmbs (collision mitigation braking system) and rdms (road departure mitigation system) warning messages appear too frequently. The first time this error appeared was when driving home from the lot after purchasing the vehicle (bought at 56 miles). After the first appearance I've seen this error appear ~60% of the time when driving or idle (these errors stay on then disappear within ~3 seconds of it appearing). My vehicle was inspected by the purchase dealer's service personnel, but they claim that there is no error logs recorded on the car's s and they could not replicate the error. At their direction I have since brought back the vehicle to monitor for the errors again so I can bring it back to the dealer for them to try to replicate this error again. . . I am aware of the cmbs issue with Honda vehicles up to 2022. I am very sad and surprised that the 2025 vehicles also have this issue. I have not yet randomly braked on the freeway (thank god) but I am fearful that my vehicle is next because Honda says they cannot find an issue currently. After noticing the frequent appearance of the warnings, I began documenting the warnings to the best of my ability with photos. To be safe I am unable to document the photo while driving so I am only able to take the pictures on the occasion when I am in the passenger seat when my wife is driving. I have attached two instances of when these errors pop up, one instance at 192 miles parked, and one instance later driving at 35 mph at 196 miles. Unfortunately, due to my misplaced faith in Honda, I was unable to document the previous warnings, but I will try my best to safely document all future ones. Please NHTSA, investigate further into this and pressure Honda to fix these vehicles. There will be more accidents and deaths if they are not held accountable. I am stuck with the vehicle, unable to purchase another one. I hope we Honda owners will be safe.