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

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

We’re driving home when the vehicle suddenly had a significant reduction in power and the car would not accelerate beyond 5 mph. Honda calls it “limp mode”. I was approximately 2 to 3 miles from home. Approximately 20 vehicles swerved passed us at normal road speeds of approximately 50 mph. The only warning light that came on was a flashing “check engine” light. The vehicle towed to Elk Grove Honda, I initially thought it may the turbocharger because I could hear a grinding sound emitting from that area. EG Honda diagnosed the issue as coolant leaking into the cylinder, which caused the misfire from a faulty head gasket. It is understood this faulty head gasket issue is part of a California class action lawsuit related to 2018-2022 Honda 1.5L turbocharged VTEC engines.

NHTSA ODI 11731355

I was driving down a 45mph street when my car shut down, complete power failure. Dashboard lit up with all kinds of warnings. It had to be towed to the nearest shop.

NHTSA ODI 11731436

Pulling out in front of High Speed Traffic, Engine went into Safe Mode with Check Engine Light. Fortunately a car at high speed avoided rear ending my car. Upon evaluation, DTC Code P0303 (Cylinder 3 - Misfire) was present. Coils and Spark Plugs were changed but car was still misfiring. Honda has a Warranty for 150k/ 10 year on Fuel Injectors but this VIN was not on list based on Honda Service Department. The Honda Service Department evaluated and Car has Head Gasket Leak in Cylinder 3. This is a widely known problem reported on many Honda Owner websites and Honda Service acknowledged it was an issue but is not a “Recall” despite the potential Safety Risk on the Road when car goes in to Protect / Shutdown Mode. The nature of this issue occurring on a well maintained car with 147k miles that is 8 years old and not being a Recall and a Safety related item is being reported by me as me and my family could have been impacted by a rear end collision as car shut down / protect mode. This could and likely has occurred to other owners and possibly attributed to accidents and Safety of passengers. Honda wants over $11k to repair the car which includes Fuel Injectors / Plugs / Coils / New Head as they reflect old head can’t be used even if machined / Head Gasket. This issue is a Safety related issue and should be a Honda Recall as the Head Bolts are a known design issue causing premature failure of the Head Gasket. Submitting this to document my incident, protect the public driving this model and year and hopefully providing information to warrant a recall so that all repairs will be performed under Recall Warranty. Also to protect the public from a Honda Accord Safety issue for 2018 Honda Accord LX.

NHTSA ODI 11731442

I just submitted a complaint but wanted to add that after my car lost all power on a 45mph road and went into limp mode it then was towed to the closest shop. I do have a warranty but when I called Honda they said it wasn't covered The shop I took it to charged me 4100 dollars for a blown head gasket which from researching it looks like this is happening to all 2018 Honda accords This is low mileage and unacceptable , turns out after I called and told Honda they refused to pay because I had already had the shop look for the problem So I had to pay 4100 for an issue Honda clearly knows about This is unfair and Honda needs to fix this issue

NHTSA ODI 11731446

The head gasket failed which caused the vehicle to stall out while driving which poses a safety threat to the driver and others due to other vehicles possibly colliding with the vehicle when stalling out. Also, this issue cause the warning light of the engine overheating, which required me to pull over while driving to prevent additional damage to the engine. The vehicle was taken to a nearby dealership for repairs that cost $3,898.91. Upon research, this is a standard issue with this year, make, and model that Honda has refused to address through a recall.

NHTSA ODI 11731054

2018 Honda Accord with blown head gasket. Vehicle has a 1.5L turbo charged engine and 100,000 miles.

NHTSA ODI 11731190

The vehicle began to overheat while traveling at fair speeds (35mph) on state road. Thermostat reading increased to H and vehicle note read “vehicle overheating” please park car. Car temperature read over 104 degrees Fahrenheit. No check engine light present. Vehicle was parked and turned off to cool.

NHTSA ODI 11731199

In 2018 Honda Accord with the 1.5-liter, four-cylinder turbo engine that had a head gasket fail at 110k miles which has been diagnosed and confirmed by local Honda dealer with misfire codes/counts on cylinder 1 due to coolant leaking inside cylinder 1 and 2 due to this bad head gasket. Due to the bad head gasket and coolant leaking into cylinders, this caused the fuel injectors to clog and fail. Creating rough idling and poor engine performance, which could cause car to stall at any point, creating a safety concern for those in the car if stalled/stuck on public roads. Additional discovery information found here of Honda America acknowledging the defect and encouraging dealerships to report this issue with incentives. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11730221

The car misfires very badly. I have changed the fuel injectors, fuel pump, spark plugs and the ignition coils to no avail. Also, car randomly showed to be overheating one day, got home and checked and my coolant level had dropped dramatically very quickly. The car has since been diagnosed with a bad head gasket.

NHTSA ODI 11729482

I was driving and the engine light started flashing, the car started to hesitate and would not go over 20 mph. I took it to the Honda dealership in Frisco, TX and they diagnosed the issue using Boroscope and recommended Head Gasket replacement with spark plugs due to plugs being fouled from coolant leaking into combustion chamber.

NHTSA ODI 11729267

This car has a faulty motor that Honda is well aware of. The head gaskets crack, and the antifreeze leaks into the cylinder. Specifically, Cylinder 3. My car is at the dealership, and the repairs are 6500. They refuse to acknowledge this problem and currently have a class action lawsuit because of this very issue. I need a car because I am a full-time student.

NHTSA ODI 11729111

2018–2022 Accord models with 1.5L turbocharged engines are experiencing premature head gasket failures. Honda is facing class-action lawsuits regarding these engines, and there are known Technical Service Bulletins (TSBs) for issues like cylinder misfires. Full injectors .

NHTSA ODI 11728724

The contact owns a 2018 Honda Accord. The contact stated that while driving approximately 45 MPH, the vehicle stalled. There was no warning light illuminated. The vehicle was towed to a local dealer to be diagnosed. The vehicle was diagnosed, and it was determined that the head gasket needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 153,000.

NHTSA ODI 11728728

Failing head gasket - cars stalls. Coolant reservoir goes empty. Check engine light go on.

NHTSA ODI 11728102

I started driving this vehicle and all of a sudden it started slowing down, and would not go up to speed. I had it fixed, the car started skipping, making a jerking movement while driving. I made an appointment with Tameron Honda of Birmingham on 3/26/26. As soon as I pulled up to Honda dealership the engine light was on. The company was trying to bill me 6100 dollars for fixing the car. I do not have that amount on hand and I need my car. I had to drive my car away from the dealership while it was in idle mode state into traffic the car moved so slowly that I could have wrecked. The dealership did not do their due diligence by going off of the vin number and making sure that the customer is safe with their brand. I was told that they did a full inspection at the dealership. I have been scared to drive this vehicle since the issue keeps happening.

NHTSA ODI 11728144

Head gasket blown, apparently this has been a known problem with Honda, which they are refusing to repair, noting mine did not come from a specific factory. [XXX] 2018 ACCORD 1.5 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11727325

As soon as I got to work and put it in park I got a message on the dashboard saying “Engine Temperature Too Hot. Do Not Drive. Allow Engine To Cool”. No other warning signs were shown before this. I looked up on google what maybe it meant and to my findings it mentioned gasket and all I noticed recent complaints and claims filed with 2018 Honda accords for a known issue with these Honda accord sport 2018 models for blows gaskets.

NHTSA ODI 11727030

Almost all of the 1.5T engines (L15BE) are having head gasket issue where the gasket slowly fails over time resulting in slow coolant loss and at one point sudden overheating causing block and head warping die to design flaw ( groove in between the cylinders resulting in lack of effective and enough surface area for the head gasket to seal the combustion chambers). It has been confirmed by Honda techs and by average 100k to 140k, all engines are failing and the dealers are raking up $ 6k to 9k charge for each change or even having to need new engines half the time. This process of slow leak results in sudden loss of power at highway speeds or acceleration and causing extreme danger of getting hit and having accidents. Took vehicle to mechanic and confirmed coolant leak inside cylinder 4 and 3.

NHTSA ODI 11726709

Major head gasket failure with no warning while pulling out onto a busy road. There is a major design flaw with the head gasket, no recalls or preventative notices from Honda whatsoever! My wife was put into a dangerous situation once the car went to limp mode with no warning while getting onto a busy road. Multiple lights on the dash lit up when the car entered limp mode. The car was immediately towed to a Honda dealership and was diagnosed with a blown head gasket. Service manager stated this is a VERY common occurrence and is indeed a design flaw. Car was fixed with no help from Honda for their faulty design $5100...

NHTSA ODI 11726173

Head gasket had to be changed out. I have seen multiple cars having the same issue with this model. The vehicle sputtered and would not let me drive above 40mph. It was a safety issue when I first had it and it occurred in the freeway.

NHTSA ODI 11725426

While driving at highway speed, the engine suddenly stalled without warning, resulting in a complete loss of power. This created a dangerous situation as I was unable to maintain speed or safely maneuver with surrounding traffic. At the time of the incident, all electrical warning lights illuminated on the dashboard simultaneously. Prior to this event, there were no clear warnings indicating imminent failure. The vehicle was later diagnosed with a failed head gasket and turbocharger issues. The sudden engine stall while in motion presents a serious safety risk, particularly at highway speeds, as it increases the likelihood of a crash due to loss of propulsion and reduced driver control. This issue appears to have occurred unexpectedly and without adequate warning

NHTSA ODI 11725636

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