Engine And Engine Cooling Problems of Honda Accord - part 1

While driving, my vehicle began shaking/rough running and the check-engine light came on. Multiple warning lights and system warnings appeared on the dashboard, including the brake system, steering, traction control, and tpms warnings. The vehicle experienced noticeable shaking and reduced/abnormal performance. I am concerned that this may be a safety-related defect because multiple vehicle systems are being affected.

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The car was driving fine and then all of the dashboard lights came on. The car wouldn’t drive faster than 20 mph. The dealership said it was a head gasket and injector problem. They quoted me $6000.

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I am reporting a safety concern involving my 2018 Honda Accord. I purchased my vehicle used in January 2024 at approximately 90,000 miles and have kept up with the recommended maintenance during my ownership. At approximately 120,000 miles, a Honda dealership diagnosed head-gasket failure with coolant intrusion involving cylinders 3 and 4. Before diagnosis, the vehicle experienced rising engine temperature while idling, coolant loss, jerking during acceleration, numerous warning lights, and severely reduced acceleration. The problem progressed to loss of power and stalling while driving and slowing/stopping, requiring me to place the vehicle in park and restart the engine to continue driving. The vehicle also developed unstable rpms and engine surging while in park. Honda performed a cooling-system pressure test and borescope inspection and confirmed coolant intrusion. Head-gasket replacement cost approximately $5,000. I contacted american Honda (case #16533411), but goodwill assistance was denied because the vehicle is outside warranty and Honda stated it had no Honda-dealership service history. I am reporting this because the head-gasket failure resulted in loss of propulsion and stalling while operating the vehicle, creating a serious safety concern.

I was driving on the highway in michigan, the speed limit is 70 mph. All of a sudden, I noticed that my car acceleration was not working. It ended up my engine misfired and in doing so, I could not go more than 20 mph on the actual highway!!! it was absolutely terrifying, even when I put on my emergency lights, I had to find a place to safely pull aside. I still had to pull out in front of someone to try to get off the exit, so pulling out in front of someone at 20 mph on the highway was petrifying. Once, I finally was able to pull into a safe place. I immediately called my insurance company and Honda about the misfiring of my engine. My car was then towed to a Honda dealership, where technicians diagnosed a blown head gasket caused by coolant leaking into a cylinder. The only warning light was the “check engine” flashing light when I was unable to drive more than 20 mph. My vehicle went limp. The repair required replacement of the head gasket at significant personal expense about $6k +.

Car shuts off at highway speeds and in stop and go traffic like it has a fuel delivery issue. Car sputters and then loses all power. I know there was a previous recall on this vehicle but I’m curious whether it was actually fixed on my car specifically.

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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.

I own a 2021 Honda Accord hybrid. Shortly after purchasing the vehicle as a used vehicle in 2023, I began experiencing intermittent air conditioning performance. The a/c would gradually lose cooling capacity over time until it was no longer able to cool the cabin effectively. To temporarily restore operation, I added refrigerant approximately twice per year, believing the system had developed a minor leak. As the condition worsened, I brought the vehicle to an authorized Honda dealership for diagnosis. The dealer diagnosed the vehicle with a leaking a/c condenser and a leaking heat exchanger pipe and recommended replacement of both components. Honda declined goodwill assistance because the vehicle is outside the original warranty period. I later learned that Honda previously issued an extended warranty for a/c condenser failures on 2018–2020 Accord models due to a known condenser defect. My vehicle exhibits the same symptoms of gradual refrigerant loss and declining cooling performance, despite being a 2021 model year. In researching this issue, I found multiple reports from other 2021 Accord and 2021 Accord hybrid owners describing similar a/c condenser failures and refrigerant leaks. I am submitting this complaint because I believe there may be a broader pattern affecting 2021 Accord vehicles that warrants review. I am requesting that NHTSA document this complaint and evaluate whether similar failures are occurring in 2021 Honda Accord and Accord hybrid vehicles.

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My Accord reported multiple warnings at engine start up (check engine light, warnings about cruise control, etc. ), and the engine ran rougher than normal. I immediately drove to a Honda dealer for service. The Honda dealer, checkered flag Honda of norfolk, virginia, diagnosed a blown head gasket in cylinder 2, which allowed all coolant to drain into the engine. They also indicated that fuel injectors and spark plugs were compromised and required replacement. The vehicle has approximately 75,000 miles, has received regular maintenance, and was operated in normal driving conditions.

At 92,156 miles, my 2018 Honda Accord touring (1. 5l turbo) suffered a catastrophic structural head gasket failure that caused dangerous engine instability while driving. The failure first manifested with a sudden eruption of multiple warning lights across the dashboard while the vehicle was in motion. Following a subsequent startup after a doctor's appointment, the vehicle began shaking violently due to immediate engine misfires. Driving a vehicle that is actively shaking and suffering from cylinder misfires in live traffic creates an unpredictable stall risk and an immediate safety hazard to myself and surrounding motorists. A certified technician at ourisman Honda of woodbridge pressurized the cooling system and physically confirmed that engine coolant is actively leaking directly onto the engine cylinder walls (cylinders 1 and 2) due to a structural head gasket failure. This is a severe design defect that causes unexpected powertrain disruption on public roads.

Major safety issue will lead to loss power and visual hazard for cars on road. 2018 Accord 1. 5 has a coolant leak in cylinder 2 and three via scope verified , shop said it needs a headgasket. It had misfire codes on scanner and shakes when start up. This will be potentially big issue if motor blows up on free way from overheating. Honda corporation won’t do a replacement for the good faith because the car has not been to “Honda” for service.

My car was stalling on the highway not going over 40, a perfectly maintained 88k mile car that is stock and only used for work and light leisure. The weak engine head gasket is to blame for coolant seeping into cyclinder 3. A very known defect with the 1. 5 turbocharged engines recently. The safety of me and passengers was at risk because that’s a 50mph+ highway and my car didn’t go to 50. Yes the problem was confirmed by dealership / manufacturer. Zero warning lights to this day.

When going 55 mph car started leaching back and forth aggressively followed by loss of engine power. Car decelerated to a max of 20 mph and would not accelerate past that. This caused the potential of getting rear ended in traffic. When I took it to the mechanic, they told me that my first cylinder was misfiring and that my fuel injector was the issue. A warning light only came on after the car decelerated to a low speed.

The contact owns a 2018 Honda Accord. The contact stated that upon starting the vehicle, the engine and tpms warning lights illuminated. The message that the vehicle should not be driven was displayed. The lane assist feature was inoperable. The contact disconnected the battery, and the warning light disappeared. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 55,000.

The contact owns a 2019 Honda Accord. The contact stated that while driving at an undisclosed speed, the vehicle stalled with several unknown warning lights illuminated. The contact scanned the vehicle and retrieved a fault code associated with the high-pressure fuel pump failure. The vehicle was towed to dealer to be diagnosed. The dealer diagnosed the vehicle with misfires in cylinders #1 and #4 and spark plug failures. The vehicle was repaired and test driven. The manufacturer was made aware of the failure. The failure mileage was approximately 120,000.

My car began to not turn on. Took it to the dealership, was told it was the turbocharge being loose. They saw coolant leaking. Paid for the fix. Few days later, car lost power and entered lint mode. Took it back and with simple camera work they check the gasket was leaking. Told that since the turbo before wasn’t working as intended, the gasket became thin. Repairs are above 6k, had no warning lights. Seems this is a common issue.

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.

I own a 2018 Honda Accord lx 1. 5t. The vehicle has developed an intermittent hard-start condition after sitting overnight. The engine cranks for approximately 5–6 seconds before starting and runs very rough for the first 2–5 seconds before smoothing out. Warm restarts are normal. While driving, the vehicle hesitates and stumbles during acceleration, is slow to build rpm, and fuel economy has noticeably decreased. During one hard acceleration event, the vehicle lost power and the check engine light flashed. I also observed that if I turn the ignition on and allow the fuel pump to prime for several seconds before starting the engine, the vehicle starts noticeably quicker than if I start it immediately. This makes me concerned that the fuel system may not be maintaining proper fuel pressure after the vehicle sits. Because of the hard starting, hesitation, intermittent loss of power during acceleration, and the improvement after allowing the fuel pump to prime, I am submitting this complaint for investigation because these symptoms could create a safety risk when entering traffic or accelerating.

The contact owns a 2019 Honda Accord. The contact stated that on several occasions while driving at undisclosed speeds, the vehicle started shaking abnormally. Occasionally, while depressing the accelerator pedal, the vehicle jerked hard. Additionally, the contact stated that the message "emissions system failure," "engine overheating - turn off immediately," and other unknown messages were displayed, with several unknown warning lights illuminated. The vehicle was taken to an affiliate dealer where it was diagnosed and determined that the head gasket needed to be replaced, and the engine needed to be disassembled to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 120,000.

Blown head gasket. This caused major cost in repairs and going without a vehicle, this was a known failure issue with Honda 2020 Accord sport. I have requested a "goodwill claim" with my nearest Honda dealer and not have gotten a phone call nor email. I have all my repair documents and a well maintenance log on my vehicle. With this being a known issue, it should be covered in the lifetime warranty that I received from the dealership when purchased but it excluded seals and gaskets on my paperwork.

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While my vehicle was in transit, it experienced a sudden and severe loss of engine power. Simultaneously, multiple malfunction indicator lights (mils) illuminated on the dashboard, and my vehicle abruptly engaged "limp mode. " this drastic restriction of speed and maneuverability while in active traffic created an immediate and severe safety hazard, which nearly resulted in a catastrophic collision. Following the incident, a formal complaint was initiated with Honda customer relations. My own independent research clearly indicates that premature head gasket failure is a well-documented, systemic defect within these specific vehicle models; therefore, a constructive resolution was anticipated. While the initial intake communication appeared promising, the subsequent follow-up was highly unprofessional. The Honda representative who returned my call was dismissive of the safety risks involved, lacked basic professional courtesy, and explicitly stated that the manufacturer would offer no financial assistance or mechanical remediation for this known defect due to a lack of service records. The failure of this component represents both a significant mechanical defect and a severe threat to driver and public safety. This report is being filed to formally document the hazardous nature of this failure in transit, as well as the manufacturer's refusal to address or take accountability for an ongoing, documented issue.

Head gasket failure, coolant leaking into cylinder 1 and 3. Car stuttering when try to accelerate and has trouble getting up to speed on highway. Coolant mixing with oil, rear main seal leak. It is available for inspection currently at dealership where it was diagnosed. My safety was jeopardized because I barely can accelerate on the highway causing cars to tail gate me and potentially crash into the back of me. The issue has been confirmed by Honda service department as a faulty head gasket. There were no warnings signs, no overheating nor any smoke indications of a faulty failing head gasket only stuttering at low spreads and not being able to accelerate. The problem first appeared a day or so before I brung it to Honda for a diagnosis. These are well none litigated issues with these head gaskets and are safety concerns that they’re failing to address.

The head gasket has failed and Honda knows this is an issue. There is a lawsuit in California about the head gasket failing. With it failing the whole engine is at risk for being ruined. This is going to cost $4000-$10,000 for people to fix depending on the damage it causes the engine. I personally lost acceleration on the freeway while going up a hill and everyone around me going 65-80 mph. I have 11 warning lights on my car right now and it started overheating today with a warning stating that the engine was hot and to stop driving immediately. We had to get towed to the mechanic for the 2nd time this week. When searching online I realized this was a known issue and about the class action lawsuit.

While driving my 2023 Honda Accord hybrid, the vehicle suddenly displayed multiple warning messages, including a check engine light, and immediately entered limp mode. Engine power was significantly reduced, making it difficult to accelerate and safely keep up with surrounding traffic. This unexpected loss of power created a potential safety hazard because the vehicle could not respond normally to throttle input. The vehicle was diagnosed by an authorized Honda dealership. The dealer confirmed diagnostic trouble code (dtc) p2101 and determined that the throttle body assembly had failed. The throttle body assembly and gasket were replaced, and a software update was also performed before the vehicle could be safely driven again. I paid approximately $670. 34 for the repair at the Honda dealership. After researching this issue, I found reports from other owners of recent Honda Accord hybrid vehicles experiencing similar p2101 throttle body failures resulting in limp mode. I am submitting this complaint because an unexpected throttle body failure that causes a vehicle to enter limp mode while driving may present a safety risk, especially if it occurs in traffic or during highway driving. I believe this issue should be reviewed to determine whether it affects additional vehicles.

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My 2018 Honda Accord ex's transmission failed after just 88,000 miles. I have owned 3 Hondas and I never had this experience. All bought a Honda world in westminster, California. I did some research and spoke to a private transmission service company, leon's transmissions, and they told me that in 2018, Honda replaced the old transmission they were using with a cvt transmission. They said that clients who bought Honda Accords in 2018 have had the transmission fail on them between 80,000 - 100,000 miles. They also said that Honda knew that the cvt in 2018 was a bad transmission but instead of alerting clients, they "chose" to work on improving the cvt transmission for future vehicles. I have taken in my Honda regularly for service which is about 3 times a year. I just had it serviced on may 29, 2026 with an oil and lube, a new air and cabin filter, and brakes. Two months later, July 7, 2026 I discovered a "shimmy, grunting" sound when I started it. No warning lamps, messages on my dashboard. I took it into my dealership that I have used since 2002. They told me the transmission had failed, that the warranty was only up to 60,000 miles and that to replace it would cost me $9000. 00 dollars. No discounts, no loyalty help, nothing. I am a retired senior and I cannot afford this cost. My dealership said that the car is not safe to drive, but to take it to carmax and see if I can get anything for the car. What nerve. I believe I should be given some compensation or a new transmission for this gross negligence on Honda. I took in my car for regular service, did not put too many miles on the car in the last 8 years (just 88,000) and feel that they should have checked the transmission each time I serviced the car or alerted me via a recall about the transmission early on.

I am submitting this complaint regarding my 2021 Honda Accord because of a serious safety issue involving the turbocharger and fuel injector system. While driving on the highway, my vehicle experienced a failure related to the turbocharger and fuel injector system, which caused multiple warning sensors to activate and resulted in the vehicle suddenly losing power and becoming unable to continue driving. This unexpected failure forced my car to stop in the middle of the highway, placing me and other motorists at significant risk of a serious accident or fatality. A vehicle should not suddenly become inoperable while traveling at highway speeds due to a mechanical defect. This creates an extremely dangerous situation, especially in heavy traffic where other drivers may not have sufficient time to react. After researching this issue, I discovered that numerous other owners of 2021 Honda Accords have reported similar failures involving the fuel injectors and turbocharger. Given the number of reported incidents and the serious safety risks associated with these failures, I believe this represents a potential defect that warrants investigation. I respectfully request that the national highway traffic safety administration investigate this issue and require Honda to issue a safety recall if appropriate. No driver should have to experience a sudden loss of power that leaves them stranded in moving traffic due to an apparent vehicle defect.

At 157000 miles I am being forced to replace my fuel injectors and a blown head gasket on my 2018 Honda Accord. As I am sure you are aware, this is an ongoing issue with this model specifically, and yet no recalls have been issued. Please understand that this was a sudden failure as I had no signs there was an engine issue before being forced into limp mode while driving on the freeway. I also had my mother in the car when all of a sudden, my car could not go above 25 mph while in traffic. Thankfully we could pull over safely and were not hurt or killed. All the lights/warning messages on the dash became illuminated before finally settling on an “emissions problem. ” all other warning symbols remained lit. My thermostat started to rise dangerously high especially while idling. I cannot stress how terrifying or dangerous this was. After a diagnostic last week at a Honda dealership, I was told I have a cylinder 3 misfire and that after they pressurized the system, they found a coolant leak which is due to the head gasket. I was also told my fuel injectors (which were just replaced in sept. 2025) are already in need of replacement as well, but that I would only be charged parts for this repair as it would be included with the labor of having to tear down the engine. Despite this, I was still provided an estimate with the full cost of the fuel injectors as well at nearly $1600. My grand total for these repairs came to $6895. I was told at most it would be $6300 – not that that is much of a discount on an issue that should have been recalled. Again, this is a known design flaw and not a result of my neglect.

Two premature blown head gaskets and warped cylinder heads, the first at 95,000 miles, while driving on the freeway the car started to shake and all warnings lights came on, luckily I was not far from the dealership and took it right in. The second at 137,000 miles. The first repair was done at Honda of concord dealership and was covered under the extended warranty. Warranty has since expired and the issue has happened again. This time Honda is recommending that I replace the engine, while denying my request for a goodwill repair. The dealership quoted me $10,000 for repair, and my car is maybe worth only $13,000. Honda knows that there's a design flaw with the 1. 5l engines, but won't take any accountability for it.

Blown head gasket.

1. Head gasket and turbo system 2. I was driving on the highway at 55mph and the front end of the car started to shake so I pulled over to inspect the car as best I could. 3. The Honda dealer did a diagnostic for my ac $450 and $200 for the hazard lights. I was told my ac needed to be charged and then the prices to replace my head gasket, turbo and coolant flush for a total of 10k. 4. All of the warning light came on in the vehicle as I was driving and my ac started to blow warm air June 29, 2026.

I am reporting a premature and dangerous failure of the engine head gasket on my 2019 Honda Accord sport (1. 5l turbo engine, 68,220 miles). While driving, the vehicle suddenly lost power due to severe engine misfires. Simultaneously, the dashboard experienced a total cascade of safety system failures, illuminating warning lights for the check engine light, electric parking brake, traction control (vsa), road departure mitigation, and adaptive cruise control. The vehicle currently in the authorized Honda dealer where technicians officially diagnosed a blown head gasket leaking coolant into cylinder 3. This is a widespread, well-documented manufacturing defect with Honda's 1. 5l turbo engines. I request that the NHTSA launch a formal safety investigation into american Honda for these premature head gasket failures to force a mandatory safety recall.

At roughly 83,000 miles, my 2018 Honda Accord 1. 5lt experienced a major engine failure caused by a blown head gasket. At the time of the failure, I was driving on a major road. While accelerating, the vehicle had "bucked" forward, which triggered the engine light to flash at which time the vehicle had no longer responded to me pushing on the gas pedal. This caused a major safety issue as I then had to get off of the road to avoid collisions with other vehicles. I immediately brought the car to a Honda dealership, who confirmed that the head gasket needed to be replaced. There were no prior indications that the vehicle had any issues.

The vehicle suffered a sudden, severe structural head gasket failure causing coolant to flood the combustion chambers. This results in violent engine stalling, limp mode, and complete loss of propulsion while driving at highway speeds, creating a severe traffic hazard. The manufacturer is actively tracking this conjoined cylinder failure but refusing to issue a safety recall for the defective engine block layout while their local dealerships dangerously misdiagnose the problem and leave customers with unreliable and unsafe vehicles.

In July 2026, our 2018 Honda Accord required a head gasket replacement. Prior to the diagnosis, the vehicle began experiencing rough starts and engine misfires. While driving, the car suddenly lost power and would not accelerate beyond approximately 10 mph. After returning home and restarting the vehicle, its performance temporarily returned to normal; however, the engine continued to idle roughly. We had the vehicle scanned, and the diagnostic result indicated a misfire in cylinder 3. The vehicle was taken to our local Honda dealership, where we were informed the head gasket failed and needed to be replaced. Given that the vehicle has fewer than 140,000 miles, we do not believe such a major engine repair should be necessary. Over the past 25 years we have owned multiple Honda vehicles, including Accords, civics and cr-vs well over 200,000 miles with our current 2008 Honda cr-v having more than 344,000 miles. None of these vehicles have ever experienced a head gasket failure or similar engine issue. We have never had such a significant costly repair, over $6,000. We are extremely disappointed that our 2018 Accord required such a significant repair at relatively low mileage. We have also learned of allegations in ongoing litigation bissell v american Honda motor CO, involving similar head gasket issues affecting Honda vehicles. Based on our experience and the number of reported complaints, we believe Honda should issue a recall, provide warranty coverage or reimburse affected owners for repair costs whichever benefits the customer. We respectfully request that Honda review our case and consider reimbursement or goodwill assistance for this unexpected and expensive repair.

I have a 2019 Honda Accord sport 1. 5. I was driving on the freeway last week and my car did not allow me to accelerate anymore. Car went to an unsafe highway speed and it was hard to get to a shoulder where can safely stop. I felt my safety was compromised by this issue. All the warnings appeared on my dash and all the lights went on. No warnings prior to this problem. I am needing a new head gasket and repairs are estimated over 5k. I know there is a class action lawsuit against Honda because this issue is extremely common. I need help. I can’t afford these repairs and I depend on my car for transportation to work and child care daily. Please hole Honda accountable for this is very dangerous and very common.

At approximately 44,000 miles, multiple warning lights illuminated on the dashboard of my 2018 Honda Accord (1. 5l turbocharged engine), including brake system, electric power steering, and driver-assistance/collision-mitigation warnings, accompanied by a rough start and an engine misfire. I took the vehicle to an authorized Honda dealer, which performed a diagnostic scan and a borescope inspection. The dealer confirmed engine coolant leaking internally into cylinder 3, a confirmed cylinder 3 misfire (code p0303), and a low coolant reservoir, and advised that the vehicle was not safe to drive. The diagnostic scan also returned fault codes across multiple safety systems, including abs/vsa stability control, electric power steering, the electric brake booster (low-voltage power circuit fault), and the driver-assistance/collision-mitigation system. This is a head gasket failure allowing coolant to enter the cylinders — a failure mode widely reported on this engine — and it occurred at low mileage, creating a risk of engine misfire, stalling, and loss of power. No crash, fire, or injury has occurred. The dealer's repair order documenting these findings is available on request. I have reported this to the Honda corporate, and they are not responding and stalling the delivery or any update on the case. It has been 3 weeks, and it is causing prolonged inconvience and safety issue to me and my family.