general problems of the 2018 Honda Accord - part 1

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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. . .

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).

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.

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.

Engine head gasket failure even after regular proper maintenance.

I was driving on the interstate and suddenly I could no longer accelerate, my engine light started blinking and I had to pull over to a gas station as my car would not go above 25-30mph. I turned it off and back on and it work so I took it home. I took it to Honda’s the next day and after diagnosis they said that my head gasket was damaged causing coolant leaking into my engine cylinder and warping of the engine. They recommended an engine replacement. I never had any warning indications on my dashboard until then. I filed a case with american Honda to assist with repairs and it has been over two weeks without resolution. I no longer felt safe continuing to drive my car and I traded my car in for safety.

The car can't start because of the recall.

The high-pressure fuel pump on my 2018 Honda Accord failed even though the vehicle had previously been repaired under a recall for the same issue. While driving, multiple warning lights illuminated on the dashboard, including the check engine light and other system warnings. The vehicle began running rough and lost power, creating a dangerous driving condition, especially in traffic. This is the second occurrence of fuel system failure despite the recall repair being completed. The recurrence of this issue raises serious safety concerns, as sudden power loss or engine malfunction while driving increases the risk of an accident. The vehicle is currently not safe to drive due to the risk of stalling or loss of power. The problem appears to be related to the high-pressure fuel pump system that was previously addressed under recall.

The cylinder head gasket on this vehicle has failed, causing engine coolant to leak into the combustion chambers (coolant intrusion). This has resulted in a recurring and dangerous loss of motive power that has put my safety and the safety of other motorists at risk on multiple occasions. Specifically, the vehicle has repeatedly entered "limp mode" while in active traffic, causing a sudden, drastic loss of acceleration that left me unable to maintain the flow of traffic or safely maneuver. This component failure is available for inspection upon request. The problem has been officially confirmed by holman Honda of fort lauderdale, where technicians diagnosed the blown head gasket and confirmed the presence of coolant in the cylinders. The manufacturer's authorized dealership has inspected the vehicle and provided a formal repair estimate. Prior to the multiple "limp mode" failures, the vehicle exhibited clear warning symptoms starting in late 2025, including violent engine stuttering and a "shimmering" vibration during cold starts. Additionally, a distinct "gurgling" or bubbling sound was audible behind the dashboard, indicating combustion gases displacing coolant. During the actual failure events, the dashboard displayed a "christmas tree" effect of warning lamps, including "emissions system problem," "brake system," and "power steering system" alerts, which disabled critical safety and driver-assist features while the vehicle was in motion. This persistent design defect has created a high risk for rear-end collisions and total engine seizure.

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.

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.

Over the past several years, there have been multiple instances where I or my wife are driving on the highway and the engine light comes on or starts flashing, and I am unable to go faster than 50 miles an hour, and the engine itself feels to be underpowered. We have taken it to the dealership for repair at least five times over the past five years and in each case they have attempted to do a repair and said the issue has been resolved, but the issue continue. At at least one of those visits, they have diagnosed the issue as an engine misfire issue. The issue has intensified from the initial symptoms, (which were as I described, but resolved by turning the car off, waiting 30 seconds to a minute and then turning the car on again) to how it is now: in addition to the check engine light, every other light and warning system has gone off when driving on the highway and the engine was unable to go faster than 40 miles an hour, and it does not resolve by restarting the car. The dealership and Honda America’s main phone line have as of yet been unable to give me a clear answer as to why this is happening or whether it can be fixed. A sudden drop in speed and power on the highway as we have experienced many times over the last five years is inherently extremely dangerous.

I purchased this 2018 Honda Accord sport brand new from the dealership, relying on Honda’s longstanding reputation for reliability and longevity. At approximately 120,000 miles, the vehicle suffered a blown head gasket during normal driving conditions. The vehicle has been properly maintained According to Honda’s recommended schedule. I have already opened a claim with Honda corporate regarding this issue and am currently awaiting their response. Despite proper maintenance, this catastrophic engine failure occurred, suggesting a design or manufacturing defect rather than misuse. This issue presents both a safety concern and a substantial financial burden, as I am a single mother of four who depends on this vehicle for daily transportation. Based on reports from other owners, this appears to be a widespread defect affecting 10th-generation Honda Accords with the 1. 5l turbo engine, which I respectfully request NHTSA investigate.

Head gasket failure. Dealership did inspect vehicle and said this is a common issue. No warning prior to headgasket issue.

Headgasket seems to be forming a leak. Checked coolant today, zero leaks on coolant system but coolant was extremely low. It is sad to see that Honda has become so unreliable.

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.

Blown head gasket.

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.

The first time was at 93,000 miles where my car started to surge and went into limp mode but once I shut the car off and turned it back on everything went away and the car was fine. It did happen a couple more times, but as soon as I would shut the car off and turn it back on the code was cleared and by the time I got it to a mechanic there was no known code. This last time was at 220,000 miles I was just entering the freeway and once on the freeway, my car started to power surge really bad jolting me back-and-forth back-and-forth. This did not let me continue to finish reaching my highway rate of speed with cars coming up fast behind me nearly hitting me. Car continued to surge, and then went into limp mode and I had to pull over on the side of the freeway. I brought my car into Honda of san bruno, California. They informed me after inspection that I had a cylinder three misfire due to a bad head gasket. They are receiving 3 to 4 of these a day and is a huge problem. I later found out that there’s a class action lawsuit for this head gasket failure that put me in danger and now has my car sitting in front of my house unable to drive.

Blown head gasket at around 91,500 miles even though car have been kept up with oil change around 5,000k mile. It is currently in the mechanic shop as of 1/12/2025 awaiting repairs (parts are being order as we speak). So, probably can't have it inspected if requested unless it is soon. The random/early head gasket getting blown with not such high miles would have been devasting if I was driving on the highway. Since, it would cause the engine to over heat as the coolant is leaking into the engine piston and some case could cause lost of power on the highway. This problem seem to be quite common or expected as talking to the dealer and they were aware that a portion of these 1. 5l turbo engine head gasket are getting blown. The vehicle or component has been inspected by an independent service center. I got misfire detected on cylinder 3 on 12/17/2025. I replace the sparks plug and it ran fine till 1/10/2026 when all of a sudden I can see the temperature gauge climbing. I stop driving the car that day on 1/10/2026. I check the coolant overflow reservoir on 1/11/2026 and found it strange that it was almost empty. I decide to take it to the mechanic on 1/12/2026 because I didn't see leaks anywhere and that was when they found the head gasket has failed and was slowly dripping coolant into the cylinder.

The vehicle experienced a catastrophic engine malfunction resulting in a no-start condition. The vehicle is currently inoperable and is available for inspection upon request. The engine failure caused the vehicle to lose power and become unreliable, creating a risk of breakdown while driving, which could have resulted in being stranded in traffic or an unsafe location and posed a risk to my personal safety and the safety of others. Yes. An independent repair facility confirmed the vehicle would not start and diagnosed the engine as failed. The vehicle was subsequently towed to another facility, where the condition was again documented. The vehicle has been inspected by independent repair facilities. The extended warranty company, route 66, reviewed the claim and denied coverage based on their assessment. No inspection by the manufacturer or law enforcement has occurred. Prior to the failure, the vehicle exhibited warning indicators and operational issues, including overheating symptoms. These issues worsened over time and ultimately resulted in complete engine failure and a no-start condition.

All dashboard lights are on & will not go away!.

My wife was driving on a highway while taking our grandchildren to day care. The vehicle lost power causing her try ti pull to the side of a main highway. All of the check engine lights went on. We brought the vehicle to Honda and the dealership said they found coolant in the combustion chamber. It needs a head gasket, at a cost of $4800. 00. The car has 76,000 miles on it. We understand that there is currently a class action lawsuit for Honda Accords of this year and make. Kindly advise us as to what we can do as this is causing us extreme stress and financial hardship. We need help. Thank you for your assistance. Sincerely, [xxx] and [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Fuel pump is bad causing the car not to start.