What 1,812 owners told NHTSA about the 2018 Honda Accord Fhev

At approximately 159,000 miles, my vehicle exhibited multiple dashboard warning lights simultaneously including ABS, VSA, EPS, TPMS, brake, ACC, CMBS, and RDM warnings along with engine misfire codes. Borescope inspection confirmed coolant intrusion into cylinder 1. Cylinders 2, 3, and 4 were dry. Diagnosis confirmed head gasket failure consistent with the known design defect in the 1.5L turbocharged i-VTEC engine related to inadequate head bolt clamping force versus boost pressure. This failure is the subject of active class action litigation (Bissell v. American Honda Motor Co., Case 3:24-cv-02286-AJB-MMP). Vehicle requires full head gasket replacement at my own expense estimated at $900+. No recall has been issued despite widespread reports of identical failures across 2018-2022 Honda Accord 1.5T vehicles.

NHTSA ODI 11752497

I bought this car used and I've only had it two months and the head gasket has blown. I didn't know the 10th generation had bad gaskets and turbos i found that out after I purchased the car. Literally everyone i know now that had one the gasket or turbo went out. Not only that it was a recall on my fuel pump no one told me about until I added it to my insurance and they told me. Yes Honda dealership fixed it for free now it needs to be a recall on these turbos and head gaskets. It's not fair. I wouldn't recommend Honda to no one now and they say Honda last a lifetime. Thats not true quit making the 10th generation and take it off the market.

NHTSA ODI 11752530

What component or system failed or malfunctioned, and is it available for inspection upon request? I own a 2018 Honda Accord with approximately 132,000 miles. Shortly after my vehicle was serviced for the fuel pump recall, multiple warning lights and system failure messages appeared simultaneously. The affected systems include Road Departure Mitigation, Emission System, Adaptive Cruise Control, Auto High Beam, Collision Mitigation Braking System, Electric Power Steering, Vehicle Stability Assist, Tire Pressure Monitoring System, Hill Start Assist, and the Air Bag System. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? The failure of multiple safety and driver-assistance systems has created a significant safety risk. My vehicle is currently operating in limp mode, resulting in reduced performance and making it difficult to drive safely in traffic. The loss or malfunction of systems such as collision mitigation braking, power steering, vehicle stability assist, adaptive cruise control, and air bag monitoring increases the risk of an accident and could jeopardize the safety of both vehicle occupants and other motorists. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. I took the vehicle to a Honda dealership for diagnostic testing after the warning lights appeared. The dealer confirmed that multiple systems were reporting faults. I was advised that numerous components would need to be replaced at a substantial cost. Prior to the fuel pump recall service, I had not experienced any of these issues and the vehicle operated normally. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has been inspected by a Honda dealership for diagnostic purposes. To my knowledge, it has not been inspected by Honda corporate, law enforcement, or insurance representatives. Were there any warning lamps, mes

NHTSA ODI 11751805

Vehicle brought to Ocean Honda, Weymouth MA with complaint that HVAC system underperforming. Customer asked to replace condensor under warrany but Honda required full diagnostic ($135). Honda disclosed that 2/3 HVAC system had leaks, and known issues. Honda has a known issue with faulty and leaking AC condensers, heat exchange pipes, and evaporators. They reported this vehicle had leaking condensor and heat exchange pipe. Honda stated they can replace the the condenser under warranty, but not the heat exchange pipe or evaporators - even though they admit both are faulty and often require repair, replacement, and costly AC system recharge. The costly repairs (upwards of $1,800-$2,000+) are passed onto the customer. These failures are confirmed by dealer (Ocean Honda - Weymouth) and considered hazardous, but refusal to fix unless cost is absorbed by customer.

NHTSA ODI 11751478

1. What component or system failed or malfunctioned, and is it available for inspection upon request? I purchased my 2018 Honda Accord in 2024, and in 2025, I experienced significant issues with the vehicle. During my visits to both Honda of Southaven and Honda of Tupelo, they indicated that the head gasket might be the problem, which is a known issue with this model. I believe the malfunction is related to this component, and I can confirm that it is available for inspection upon request. 2. How was your safety or the safety of others put at risk? The issues with my vehicle have directly endangered my safety and the safety of my children. While driving, the car started jerking unexpectedly and then cut off entirely on the highway, which could have resulted in a severe accident. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, I have visited Honda of Southaven and Honda of Tupelo over three times reporting these problems. Both dealerships acknowledged the issue, with one dealership stating it was likely the head gasket, which they mentioned seeing frequently with Honda vehicles. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? I have not had an inspection by the manufacturer or police. However, I have had my vehicle inspected by two authorized Honda dealerships, where they diagnosed the problem. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes, before the failure, there were multiple warning lights on the dashboard, which indicated that something was wrong with the vehicle. These symptoms began appearing shortly after I purchased the car in 2024, and they escalated over time leading up to my visits to the dealerships in 2025.

NHTSA ODI 11751072

The Body Control Module of my 2018 Accord has failed. At 70,000 miles on my vehicle the door locks began to be unresponsive. At 100,000 Miles all door locks were unresponsive to the door control and fob control. The only way to secure my vehicle is to manually lock all doors and use the key within my fob to unlock the drivers door and then manually unlock all other doors. Ed Martin Honda in Indianapolis inspected the vehicle and determined the the Body Control Module would need to be replaced to make the Door locks work. There were known issues with the Body Control Module as there was an active recall for the software of the system. I completed the recalls software update at the time it was issued but this seems to be a continued problem.

NHTSA ODI 11750733

I purchased the car in November 2025 from Carvana. By December, all the dashboard lights came on and no one can locate the problem. The car still runs but not to its optimum performance.

NHTSA ODI 11750479

everytime upon start up i get a message saying supplement restraint system error see dealer, should not be having this issue

NHTSA ODI 11749085

There are 13 alerts showing on the instrument panel for various systems not functioning, along with accompanying yellow dash lights such as tire pressure, ABS, brake system, traction control, ACC, and LKAS. Systems not available include, ABS system, Adaptive Cruise Control, Road Departure Mitigation, Auto High-Beam, TPMS, Electric Power Steering, plus several others. These alerts first started January 2026 and occasionally would disappear; however, over the past few months the warnings have become constant. The vehicle has approx. 120,000 miles. Due to TPMS not functioning, I am not given a warning when a tire has gone flat/blown while driving as the tire pressure light is always on the dash. The only warning I am provided is the sound/smell of the rim dragging along the road to notify me the tire is flat. This poses a risk to myself and others by creating an emergent situation requiring me to pull over rapidly. Another incident occurred when ACC was enabled (at a time when the alerts had been appearing on and off). Cruise control set at 70 mph when suddenly the above mentioned alerts reappeared and ACC system became unavailable, leading to unexpected deceleration on the highway. This poses a risk to myself and others as it creates unpredictable driving patterns, unbeknownst to the driver. Initially I replaced the battery with no resolution of the issue. I later discovered maintenance code displayed by the vehicle was C003A-62 for Right Rear Wheel Speed Sensor Circuit Failure (circuit short to ground or open). The mechanic recommended replacing the right wheel hub assembly as this was suspected to be the cause of failed circuit. When that repair lasted no more than 10 mins before the warnings reappeared, the right rear wheel speed sensor itself was then replaced. Similarly, this did not fix the issue. I have not sought additional service due to repair costs beginning to add up with no resolution. Based on the history of reports, this issue does not seem uncommon.

NHTSA ODI 11746593

The Honda Accord Infotainment system is constantly “ghost touching”. It will select buttons on the screen that I never touched. It is incredibly distracting as it happens while I’m driving and the screen changes rapidly. It also will turn off my GPS while I’m driving so I suddenly no longer no where I’m going. This problem began occurring when the screen was replaced by the dealership and I made them aware promptly but they said if I can’t reproduce it there’s nothing they can do, and this happens randomly. It happens without warning. It happens daily now at all times the car is on.

NHTSA ODI 11742347

All of my dash lights are on.

NHTSA ODI 11741402

While driving vehicle detected both road departure and engaged the emergency automated braking. The vehicle attempted to correct the "road departure" by steering the vehicle away from the perceived problem and engaged the brakes nearly causing a collision as it has done numerous times before. I have reported this to NHTSA and American Honda multiple times and await a repair of this dangerous issue. Honda has opened a case on this but have had 18 months and no response has been issued.

NHTSA ODI 11739622

I am filing a safety complaint regarding my 2018 Honda Accord equipped with the 1.5L turbocharged engine. The vehicle has experienced repeated engine-related failures despite multiple repair attempts by an authorized Honda dealership. Problems have included dashboard warning lights, engine misfires, loss of power, fuel odor, and suspected head gasket failure. Most concerning, on September 20, 2025, while exiting a highway with my child in the vehicle, the car suddenly lost power and all dashboard warning lights illuminated simultaneously. The vehicle became inoperable in traffic and required towing. This created a serious safety hazard and could have resulted in an accident. The vehicle has been returned to the dealership multiple times for the same or related issue on the following dates: • July 8, 2025 – mileage 80,099 • July 10, 2025 – mileage 80,101 • September 20, 2025 – mileage approximately 82,000 • October 27, 2025 – mileage 84,453 • October 28, 2025 – mileage 84,473 • April 16, 2026 – mileage 93,812 Repairs have included replacement of the high-pressure fuel pump and repeated diagnostic inspections, but the issue remains unresolved. I understand many owners of Honda vehicles equipped with the 1.5L turbocharged engine have reported similar problems involving head gasket failure, coolant intrusion, misfires, overheating, fuel system issues, and sudden loss of power. I am concerned this defect presents a significant safety risk.

NHTSA ODI 11737464

The head gaskets and turbo supercharger goes out at a certain amount of miles

NHTSA ODI 11736624

The day I purchased the vehicle from the dealer, every warning light began cycling on including the automatic emergency braking failure, engine system failure and others. I immediately took the car back to the dealer and they supposedly repaired it. When the car was returned to me, I drove it for less than a week and the same thing happened again. When the light came on, the car’s auto braking and cruise control stopped working. I took it back to the dealer and they said it was the head gaskets, which they fixed. When I got the car back again, I drove it for 2 days and it did the same thing again, this time all of the warning codes came on. This time, I had a total engine failure because the timing chain broke. The dealer took almost two months to replace the engine and it cost us almost $6,000. I got the car back last Saturday. Today, driving home from work, the automatic brake system failure warning came on again and the car won’t automatically brake and cruise control wouldn’t work. This is exactly what happened last time. I am afraid to drive this car because I don’t know if the brakes will fail and the system currently isn’t working. We are taking it back to the dealer which will likely cost us more money. We are stuck with this car and cannot get rid of it because we owe more money on it then it is worth because of replacing the engine.

NHTSA ODI 11734702

Car keeps throwing cylinder 2 misfire, replaced all spark plugs, fuel indicators and still having issues. Think it’s the ecm/pcm is bad or there’s a bad connection.

NHTSA ODI 11734435

The gas pedal failed to work on three separate occasions. The car essentially went into “limp” mode where the whole car stop driving out of nowhere. These models of Honda are known for the head gasket prematurely going out which has caused me car to have multiple misfires, warning lights, loss of power. The problem has been confirmed by the dealership and an independent mechanic.

NHTSA ODI 11733530

Infotainment center continually freezes. When it does, backup camera does not work. I have tried software updates but it has gotten worse. It is also very slow to reboot so again, no backup camera during that time.

NHTSA ODI 11731677

The dashboard on the vehicle lights up with multiple error notifications. This puts the vehicle in limp mode. Indicates emissions errors, check engine, lane mitigation, brakes, control system. Per different customers this fault is being caused by either faulty fuel injector, miss fire, bad ignition coils, damage head gaskets, or turbo mechanism faulty. My vehicle has 70,000 miles and others in the chat have less miles that are having similar problems. Head gaskets should not fail so soon with proper maintenance. My obd2 scan code is miss fire which could Indicate faulty spark plugs, coil, injector or headgasket. For a vehicle at 70,000 miles this shouldn't happen. Vehicle has been maintained as the manufacturer recommendations

NHTSA ODI 11731333

I have bought this car new in 2018, The issue that I’m having is that ..I’ll be driving on the highway or local my car will brake on its own without any hazards in front of it . It’s very dangerous it almost caused me an accident on the highway .

NHTSA ODI 11730535

All warning lights are on the dash. Came on while driving.

NHTSA ODI 11730239

The contact owns a 2018 Honda Accord. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated. The failure was intermittent. The failure had occurred while attempting to start the vehicle, while the vehicle was idling, and while the vehicle was being driven. The contact stated that the vehicle was taken to several independent mechanics, however the failure was not duplicated. The vehicle was taken to an alternate independent mechanic; however, the failure was not duplicated. The contact was informed that the failure might be a communication issue with the software. The dealer was made aware of the failure. The contact referenced an unknown recall; however, the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 135,000.

NHTSA ODI 11730243

All alarms are on. Breaks adaptive cruise control hill assist and all other alarms. Taken in to 2 Honda deals and serval mechanics they cannot figure out what’s wrong with it. About once a month all the alarms will clear while driving and the car sensors will start making the car drive odd. Have to fight the steering wheel to keep it straight and wheels will independently break, thinking it’s sliding but it’s not. Extremely dangerous on snowy road or wet roads.

NHTSA ODI 11729420

A supplemental restraint warning came on dashboard, I noticed other accord owners are experiencing the same this light has to do with possibly airbags or seatbelts making it possibly unsafe to drive.

NHTSA ODI 11728805

Experiencing an ongoing issue where multiple warning lights appear on the dashboard at the same time. The lights include several safety and system warnings, making it look like many different systems in the vehicle are malfunctioning simultaneously. Even after repairs were made, the dashboard warning lights continue to stay on or return shortly after. It has become frustrating because the vehicle continues to show problems even when something has already been fixed. THIS IS A SAFETY CONCERN. How can we know if something is actually malfunctioning if codes are being thrown, constantly?? We also can’t use the safety features included with the vehicle when this is happening. Having so many warning lights on at once also creates concern about the reliability and safety of the vehicle, especially since several of the warnings relate to important systems such as braking, driver assistance features, and engine performance. Repairs aren’t helping and I’m seeing sooooo many other 2018 accord owners with the same issue, as has been documented with this site, NHTSA

NHTSA ODI 11724803