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

Transmission started bucking at 50k miles, the problem has gotten substantially worse at 60k miles. Rough downshifting and upshifting in low gears. Will slam into gears 2-3 often and cause driver and passengers to lurch forward. Will cause very rough acceleration at times and causes a danger in traffic given the speed becomes unpredictable. Transmission does not know what gear to be in even after ATF type 2.0 fluid change following dealer procedure. This is putting me and other drivers at risk because I cannot control my speed when transmission is slamming in between gears. No warning lamps, undetected by cars TCU.

NHTSA ODI 11725218

The contact owns a 2018 Honda Accord. The contact stated that while driving approximately 35-40 MPH, the vehicle experienced phantom braking. No warning light was illuminated during the failure. The vehicle was not diagnosed nor repaired by an independent mechanic or a dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

NHTSA ODI 11725262

The contact owns a 2018 Honda Accord. The contact stated that while driving 70 MPH in the fast lane, the vehicle experienced head gasket failure. The vehicle lost automotive power and decelerated to 5 MPH. The contact was able to pull over safely. The engine light was illuminated. The vehicle was taken to the local dealer the next day, where it was diagnosed with a misfire in cylinders #2 and #3, a computer code malfunction, and a blown head gasket. The vehicle was partially repaired. The manufacturer was contacted and assisted with the cost of the repair. The manufacturer confirmed there was no warranty coverage on the vehicle. The failure mileage was approximately 118,000.

NHTSA ODI 11725288

Car was jerking when acceleration. Dealer inspected the vehicle and said the head gasket is blown. It overheated a day after Honda dealership fixed my water pump.

NHTSA ODI 11725386

My turbo and fuel injectors went out at the same time. It has been fixed, so I don't think it can be inspected My safety was put at risk. The car randomly went into limp mode on the interstate at high speeds and suddenly came to almost a complete stop Yes, it was inspected by a mechanic, everyone with a 2018 honda accords are having this issue Yes, it was inspected by a mechanic. No warning lamps or anything, just a blinking check engine light that appeared for the first time ever.

NHTSA ODI 11724864

Head gasket failed at 58k miles without overheating per assessment at honda dealership. Safety was affected by going into limp mode instantly turning left onto 55 mph 4 lane road, no warning lights prior going into limp mode. Brief misfire occurred prior to incident, (did not know at time because it did not seem significant and no warning light). Dealer reports multiple 2018 honda accord 1.5L head gasket and fuel injector failures. Unknown if manufacture would inspect. In addition fuel injector has completely failed and requires replacement per honda dealership assessment, this occurred after dealership repaired head gasket. Waiting for final repair invoice, can and will provide upon request

NHTSA ODI 11724958

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

I took my accord into Snellville GA Honda dealer for fuel pump recall and the day I received it from the service department, it started to sputtter and engine shutdown. I took back 3 times and got a different answer each time. I believe the turbo charger may have been affected from the fuel pump being bad. The latest diagnostic says it has turbo under boost issue.

NHTSA ODI 11724386

I am submitting a claim regarding a major repair needed on my 2018 Honda Accord. The vehicle was recently diagnosed at an authorized Honda dealership, where technicians determined that the engine requires a head gasket repair. I was quoted approximately $7,000 for the repair. Based on the research I have done, premature head gasket failure appears to be a known and recurring issue reported by other owners of this model, often occurring around 100,000 miles or even sooner. This type of failure at this mileage is unexpected for a properly maintained vehicle and raises concern about a potential defect or design issue. Additionally, the vehicle showed no clear warning signs prior to the diagnosis. There were no dashboard warnings or indicators that would have alerted me to an imminent failure, which made it impossible to address the problem before significant damage occurred. Given the nature of the failure, the relatively low mileage for such a major engine issue, and the high repair cost quoted by the dealership, I am requesting that this matter be reviewed and that assistance or coverage for the repair be considered.

NHTSA ODI 11724422

While driving in a busy area with pedestrians and other vehicles, my car hard braked out of nowhere to a complete stop for no reason. I was nearly rear ended. The adaptive cruise control shuts off completely after 15 minutes in use. Says to take it to the nearest dealership. Turning off and restarting the car gets rid of the notification.

NHTSA ODI 11724476

After recent service from local honda dealership vehicle started to drive sluggish. Had all fluids changed and the coolant flushed when serviced at the dealership. The vehicle now displays several different alerts upon start up "Emissions systems failure" Brake system failure" Hill Assist failure" Power Steering failure". Vehicle was returned to dealership and it was determined the head gaskets need to be replaced due to coolant leaking. This vehicle has been maintained consistently with documentation and shouldn't have this type of failure with only 100k miles. Repairs are $4800 and this should definitely be investigated because this is common in Honda Accord model years 2018-2022.

NHTSA ODI 11724260

Error message "Supplemental Restraint System Problem. See Your Dealer." comes on everyday. I understand this is a Honda well known issue and they refuse to recall.

NHTSA ODI 11724317

The contact owns a 2018 Honda Accord. The contact stated that while the vehicle was parked and starting the vehicle, several unknown warning lights became illuminated on the instrument panel. The steering wheel failed to move, and the power steering warning light illuminated, and the steering wheel functionality became limited. In another occurrence, while driving at an undisclosed speed, the vehicle stalled, and it shut off, but was able to restart. The vehicle was taken to a dealer and diagnosed with an electrical failure, but the vehicle was not repaired. The vehicle was taken to an independent mechanic, where the battery was replaced, and the sensor box was cleaned; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 110,000.

NHTSA ODI 11723802

A 2018 Honda Accord 1.5T developed an engine misfire, coolant loss, and reduced acceleration shortly after purchase from a dealership on 01/07/2026 (around 156,000 miles / 15,000). On 01/23/2026, during a Honda dealer inspection at about 157,255 miles, the technician noted misfires on startup, found the coolant overflow reservoir empty, pressure-tested the system, and confirmed coolant leaking into cylinders 3 and 4 from the head gasket. The dealer recommended head gasket replacement plus spark plugs, drive belt, and valve adjustment. I was told that continued driving could worsen the condition, leading to overheating and further engine damage. After that diagnosis, the vehicle’s drivability worsened, and it became unsafe to rely on due to misfires and loss of acceleration, especially on the highway. The selling dealership refused to assist, claiming the defect was not present at the time of sale; Honda America acknowledged the head gasket concern but denied a goodwill claim, citing the high cost of the issue and lack of NHTSA enforcement on this issue. An independent repair shop then provided a second inspection/estimate consistent with the same head-gasket repair scope. The vehicle and repair records are available for inspection. No crash or injury occurred, but the defect caused a sudden loss of power and overheating while driving; I was stuck on the highway on two occasions with my hazard lights on after acceleration completely halted. Warning symptoms (the engine light) only appeared when the car suddenly stopped accelerating. Two days after an around-5,000 headgasket repair, drivability problems and multiple dashboard warnings appeared, including turbo-related concerns; this concern is ongoing.

NHTSA ODI 11724001

The rear brakes on my 2018 Honda Accord Sport 1.5T (Six Speed Manual Transmission) have failed prematurely. This failure of the pads and rotors was confirmed, at the request of American Honda, by me at my local Honda dealer, and was documented in a response to American Honda. This occurred at 46,150 miles which i believe indicates a defective design in that the brake calipers, pads and rotors as a system were not built to the capacity needed to support Honda's design of this car that greatly increases the workload on the rear brakes. I am a very careful driver and minimize the use of brakes as a result. My calculation is that these brakes have failed at 1/4th the life that it would be reasonable to expect. The result is increased safety risk to car owners and drivers who do not act on this premature failure due to it not being normal or expected or affordable. Honda has effectively, through this brake design, implemented a need for car owners to enact a 750 repair on a frequency close to routine maintenance such as oil changes.

NHTSA ODI 11723529

Everytime I try to turn my wheel it’ll get stiff and the notification will pop up saying “electric power steering system” but then it’ll go back to normal and when I start the car it sounds like it doesn’t want to start at all and like the cords are trying to connect because they start making a ticking sound. I’ve had issues with electrical before to where the airbags and lane assist had to be fixed but the issues seems to keep circling back around. Something going on with the electrical in the car and I have only had it for about a year and a half.

NHTSA ODI 11723625

See attached document for complaint.

NHTSA ODI 11723663

I was driving and all the lights on the dash board came on. Including the engine light. I took the vehicle to the dealership service center and they said the turbo function of my engine was failing. and it was still covered under warranty so they fixed that. One day after the picking it up all the lights came back on. I took it back and they stated that the fuel injectors are failing thus causing engine misfires resulting in the engine light coming back on and the car randomly stalling or slowing. They indicated that the fuel injectors are NOT covered and repairs are around 2,400.00, I believe this should be covered because there was a previous recall on the fuel on the fuel pump (which is connected to the injectors). Also I don't understand how the "turbo" was still covered under warranty but the injectors are not. Upon doing my research this is a known problem on this make and model and Honda should correct the known defect.

NHTSA ODI 11723275

I own a 2018 Honda Accord and have been 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. I have taken the vehicle to be serviced and attempted to fix the issues that were identified. However, 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 repaired. This situation makes it difficult to know whether there is a real safety issue occurring with the car or if the warning system itself is malfunctioning. 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. After researching the issue, I discovered that many other owners of the 2018 Honda Accord have reported experiencing the same problem with multiple dashboard warnings appearing at once. Because this appears to be a widespread issue, I am submitting this complaint so it can be documented and investigated further. I believe there may be an underlying defect causing these repeated warning lights despite repairs being made.

NHTSA ODI 11723376

A 2018 Honda Accord suddenly displayed multiple dashboard warning messages at the same time after previously operating normally. The warnings include: Emission System Problem (avoid heavy acceleration), Tire Pressure Monitoring System (TPMS) problem, Brake System problem, Brake Hold System problem, Electric Power Steering system problem, Vehicle Stability Assist problem, Hill Start Assist problem, Adaptive Cruise Control system problem, Collision Mitigation Braking System problem, and Road Departure Mitigation System problem. These alerts appeared simultaneously when the vehicle was started, even though the car had been driven the night before without any issues. The vehicle still starts and runs, but the number of system warnings suggests a possible electrical, sensor, or control module issue affecting multiple vehicle systems.

NHTSA ODI 11722891

Head Gasket Failure at 121,000. It has also affected the spark plugs. We were quoted a 4300 repair at the Honda Dealership in Carlsbad. Engine displayed all lights and went on power loss mode and suddenly couldn't go more than 5-10 MPH, so we had to tow it. Was dangerous getting such a slow car into a parking lot safely.

NHTSA ODI 11723175

Head Gasket caused multiple issues with coolant burning quickly. Multiple ignition coils also got damaged and had to be replaced. Though the underlying issue with the gasket was not addressed by the dealership. The head gasket is currently broken and does not function at all and the car has only driven 84000 miles.

NHTSA ODI 11723179

Blown head gasket

NHTSA ODI 11722322

All dash lights are on and the Honda dealership told me I have a blown head gasket, need a turbo replacement & fuel pump in which I wasn’t able to drive the car for 7 months at 112,276 miles..This seems like a known issue for this make and model vehicle after 100,000 miles

NHTSA ODI 11721898

There are many warming lamps on in the car. My car won't pick up speed it in limp mode once I crank up. I have to turn it off and restart any order for it to go and pick up speed. My number 3 plug keep showing something wrong it has been replaced multiple times but still having the same issue. I had it checked out it's saying the same problem fuel. I have had my fuel pump change and still having problems. 2018 are bad models for honda and there should be multiple recalls because everyone having the same problems. Head gaskets,fuel injection, turbo problems as well as fuel pump

NHTSA ODI 11721969