2018 HONDA ACCORD Engine Problems

Coolant leak through the gasket into a cylinder so now I need a new head gasket. When I start my car, it starts to shake and don’t accelerate. I just got my turbo done in April because of the same issues.

On August 25th 2025 we were driving the vehicle on the freeway at 55 MPH and upon acceleration the vehicle started to decelerate and the check engine light came on. The vehicle would not go over 10 MPH at this point. We took it to the dealership to have the issue addressed. They told us that the issue was a misfire in cylinder #3. They told us the vehicle will need to relearn the firing order and for the next 2 weeks the vehicle was rough idling upon startup. We called the dealership to make an appointment to have that issue addressed and took the vehicle back to the dealership. On September 10 we were told by the dealership the head gasket is blown. We were told that they are seeing that this is becoming a more common issue with the engine of this year model vehicle.

I attempted to start my vehicle's engine normally and the engine made a rough cranking sounded and then finally started. The dashboard displayed multiple warning messages immediately after: Emission system problem/avoid heavy acceleration and high speed/see your dealer, tire pressure monitor system problem/check tire pressure/see your dealer, brake system problem/brake performance may be reduced/see your dealer, brake hold system problem/apply brake when stopped/see your dealer, electric power steering system problem/steering assist reduced/see your dealer, vehicle stability assist system problem/reduced traction and handling/see your dealer, hill start assist problem/vehicle may roll upon brake release/see your dealer, adaptive cruise control system problem/see your dealer, collision mitigation braking system problem/see your dealer, road departure mitigation system problem/see your dealer. I was able to carefully drive and drop off the vehicle at the dealership. The dealership conducted an inspection and found "the check engine light was illuminated due to a misfire in cylinder two....

Car has 60,675 miles with a blown head gasket. Prior to blown head gasket vehicle was brought to Honda in April 2025 for overheating, rough start and leaking coolant and was told fuel pump had a recall so it was changed, Honda did the recall repairs, performed oil change and checked everything else and released the car in working order but a week later after adding 175 miles more to the car it started overheating and had a rough start, the car was immediately brought back to Honda and they said it was a blown head gasket, the car was driven home that same day and left in the driveway undriven until September 3rd 2025 when it was towed to a different Honda dealership where it was confirmed to be blown head gasket and the cost is estimated at $6800 to repair. The car has had all recall issues addressed...

Upon commuting to work, the car failed to accelerate causing the car to almost suddenly stop while driving; at the same time of the failure warning lights and beeping occurred. No warnings prior to failure. By God’s grace, I was not yet on the expressway and avoided what would have been a horrible accident jeopardizing not only my life but the lives of anyone that would have been behind me. The gasket failed (cylinder #3) and is available for inspection upon request. It was a significant safety issue as the failure occurred without warning causing the car to stop no warning. Yes, the dealer has confirmed the failure and I was quoted a $5800 repair cost in spite of a owning a lifetime power train warranty. No, the vehicle or component has not been inspected by the manufacturer, police, or insurance. I did place a call to American Honda and...

Head gasket between cylinders 2 and 3 blown, despite regular maintenance being completed by Honda dealerships. This issue has caused vehicle to go into "limp mode" while on the highway leading to safety concerns. This problem has been confirmed by not only a Honda dealer repair shop but also an independent repair shop and owners. There were not warning prior to the failure. Per the dealership, this is not something that could be caught during regular maintenance and inspections.

- Year: 2018 - Make: Honda - Model: Accord Sport 1.5 Turbo - Vehicle Identification Number : [XXX] I am writing to report a safety concern with my 2018 Honda Accord Sport 1.5 Turbo. The vehicle has developed a head gasket problem, which has resulted in significant engine issues. Additionally, I have experienced fuel injector problems, leading to decreased fuel efficiency and rough engine performance. Despite following the recommended maintenance schedule and addressing the issues with the dealer, the problems persist. I have been quoted $7,800 for repairs, which is unacceptable given the vehicle's age and mileage (currently 114,848 miles). I am concerned about the safety and reliability of the vehicle, especially when driving on the highway. The vehicle's blown head gasket has caused ¹: - Loss of power, leading to potential safety issues on the road - Engine hesitation and shutdown while driving, which can increase the risk of...

The contact owns a 2018 Honda Accord. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the vehicle stalled. The contact stated that several warning lights were illuminated. In addition, the contact stated that all the warning lights turned off, however the check engine warning light remained illuminated. The contact stated that the failure had occurred while the contact's children were inside the vehicle. The vehicle was taken to an independent mechanic, where it was unofficially diagnosed with fuel pump failure. The contact was advised to contact the dealer because there was a recall for the fuel pump. The dealer was made aware of the failure; however, the contact was informed of a diagnostic fee to perform a diagnostic test. The manufacturer was made aware of the failure but provided no assistance....

Car stalled/went into limp mode in the middle of turning onto a busy road almost hit by oncoming traffic. Check engine light came on, as well as all other warnings. Ran diagnostics and show fuel running lean and cyl 2 misfire. Checked all other possible issues related to codes and all signs point to bad fuel injectors.

I was merging onto the freeway and my car went into limp mode. I was lucky enough to pull over to the side because I was on the far right lane. I took the car to the dealer and was told that the car had blown it's head gasket. How can a 2018 honda accord have blown a head gasket so soon? I looked online and many other 2018 honda owners reported the same issues.

I currently own a 2018 Honda Accord 1.5L 4 cylinder with only 62,800 miles at the start of the issue. Around the end of July 2025 the car started to jerk. It started with a slight jerk and escalated daily, over about a week, until the car started going into limp mode. The car was taken to a repair shop near my house. This shop said they were receiving an engine misfire code, replaced all spark plugs, and car driving good again. Around 8/15/2025, I started having the same issues. On 8/19/25 the car went into limp mode again in a busy highway. Took it to a Honda/Acura repair shop. They again found the same misfire codes, replaced 1 spark plug, and the car was driving okay. This Honda/Acura shop found low coolant in the engine and believed I had a leaking head gasket as they have been seeing a...

Have had several misfires, nothing would fix it. Dealership looked at it and said the injectors needed to be replaced. Replaced injectors and still had misfire issues. Car is consuming coolant, and there is exhaust is the cooling system. Meaning blown head gasket.

I have a 2018 Honda Accord EX with 104,000 miles. Head gasket blew and coolant is leaking. Upon further research this is a common problem that is now being discovered once the car drives past 60,000 miles. There is an internal memo asking dealers to let them know if they are seeing this too online. Honda has several class action law suits regarding this being a design flaw of the 2018 with the 1.5 liter engine. I spoke with Honda and they offered no assitance, stating out of warranty and no recall. This is their design issue and in my opinion responsible for repairing this. Otherwise out of pocket its a 5k plus repair.

my 2018 Honda Accord is having major engine problems. Earlier this year all of the lights were coming on, 7 of them at a time, and that happened for a few weeks before it started overheating. If I was driving over 50mph, it wouldn't overheat, but if I was driving slow or idling, it was overheating within minutes. I took it to the shop in June where they discovered there was NO COOLANT inside the engine. they put 1.5 gallons of coolant in there, and it fixed the problem temporarily, but 2 weeks ago, all of the lights started coming on again. I called my mechanic, and he said his friend had a 2018 Honda Accord that was doing the same thing and that we need to approach Honda and ask them to fix the problem. turns out a lot of other people on the internet are reporting the exact...

After having the fuel pump recall completed on my Honda Accord, I began experiencing serious engine problems that I had not had before the recall repair. Shortly afterward, my vehicle developed a blown head gasket, coolant leaking into the engine, and turbo issues. These failures occurred outside of my extended warranty (which has also since expired), but they started only after the recall work was performed. I contacted my dealership and Honda corporate for assistance through a goodwill request, but they denied coverage, stating I am outside of warranty and they cannot determine fault. However, I have since learned that other Honda owners have reported experiencing the same or very similar engine issues after this recall repair. Currently, the vehicle is undriveable without risking complete engine failure. The cost of repair is extremely high, leaving me at a financial loss for a problem I believe is directly related to the...

I got this car April 2024. By December I went to the Honda dealer for the recall even though nothing was wrong with the car. After December, when I got the recall fast forward to February. My engine is stalling. I could be pulling out my driveway and it’s stalling. I could be going 10 MPH and it’s stalling. I was coming off a ramp and almost got smacked by a 18 wheeler because it started stalling as I’m coming off the ramp. It break checked me on 5th ave. I was driving. No car in front of me. But a car in the back of me. And it just broke on me. Out of no where. Almost causing the Mercedes Benz to hit me. Luckily they were paying attention. I keep taking it to my mechanic. They are seeing nothing wrong. They don’t want to fix something that’s not...

My car is always having some electrical issue but when I type in my VIN number, no recalls are listed under my VIN number and then for the last couple of days I've been experiencing acceleration problems when I look up a 2018 Honda Accord it is saying that fuel pumps have been an issue, but my VIN number pulls up no information as far as me falling under that recall what are the proper steps to get my car looked at to see if my VIN number Even though it's not populating, any recall falls under the recall

Blown head gasket at 82,673 miles. Complete loss of power on the interstate traveling 70mph. This was after replacing all the injectors in April at 79065 miles. Same loss of power while attempting to merge into interstate. All maintenance was performed as scheduled.

While driving my 2018 Honda Accord Sport 2.0T, I experienced sudden coolant loss and engine overheating. Upon inspection by a mechanic, it was confirmed that the cylinder head is cracked, which is a known issue on the 2.0T engine. This creates a serious safety hazard because it can cause engine failure while driving, loss of power, or even fire risk if coolant mixes with oil. Honda has not issued a recall, but multiple owners have reported this same problem, and I believe it is a manufacturer defect. This should be investigated as it directly affects vehicle safety and reliability. symptoms: Overheating, coolant disappearing, white smoke, loss of power, warning lights, etc.

Blown head gasket

The engine coolant began to leak into the cylinders of the engine. The engine began to overheat in the middle of the freeway. I had to shutdown the car down and get it towed. The car is available for inspection. Yes, my safety was at risk. Diagnostics from the dealership indicated that the problem is a design flaw with the head gasket being too thin. There were no indications that the car was going to stall until after it stalled. Honda is putting our lives at risk by allowing citizens to drive a car that has an engine become locked/stall/overheat by design and without warning.

Car went into Limp mode, immediately brought to a Honda dealership. Planet Honda in NJ. Misfire in cylinder 3. Causation of misfire was a defect head gasket allowing coolant to flow into cylinder 3 causing a vehicle shut down and $3625 in repair costs. Warranty covered it but I have heard many other cases with this have not.

While accelerating uphill approximately 65 mph the car suddenly started to shutter and slow down to 35 mph. I forced me to move rapidly over to the right lane on a busy highway almost getting hit by a semi truck. Luckily I was able move to the shoulder and park the vehicle. I shut the vehicle off and tried to start it back up which it did but struggled to turn over. Using my OBDII scanner I found that multiple codes had appeared which included P0087 Fuel Rail/System Pressure to low and P0299 Turbocharger Underboost. Vehicle was towed to my residence where it currently sits until I am able to repair it. Prior to this happening there were No warning lamps or messages or symptoms. The failures first appeared while driving up hill. It was not inspected by manufacturer, police, or insurance. The problem was not taken to dealer or...

Failed head gasket. Resulting in complete engine replacement including turbo. Causing my car to go sluggish while driving Dealership inspected and confirmed engine and turbo replacement needed All the lights on the dashboard came on at time of incident

On the morning of July 26, 2025, while returning home from a grocery shopping trip, my vehicle experienced a sudden and severe loss of power while traveling on an interstate highway with a posted speed limit of 65 mph. Without warning, the car ceased to accelerate and began to decelerate rapidly. I immediately activated my hazard lights and attempted to locate a safe area to stop. Vehicles traveling behind and alongside me were forced to brake abruptly to avoid a collision. Fortunately, no accident occurred, though the situation clearly presented a significant risk of one. After pulling onto the shoulder, I turned the vehicle off and restarted it. It initially appeared to operate normally, allowing me to resume driving. However, within a few minutes, the loss-of-power incident occurred again. I managed to pull over a second time, restart the vehicle, and continue the approximately 10-minute drive home without further incident....

Engine overheating due to coolant leaking and car needing head gasket replacement Fuel injectors also failed

While driving my 2018 Honda Accord, the engine began running roughly and the check engine lights and multiple warning lights came on. The vehicle was taken to a Honda dealership for diagnosis. The service department informed me that coolant was leaking into the engine, causing damage to the head gasket and cylinders 2 and 3. They confirmed this issue and recommended either an expensive head gasket/cylinder repair or a full engine replacement. Prior to this failure, I occasionally noticed mild engine hesitation, but no specific warning messages about low coolant or overheating appeared until the check engine light activated. The dealership stated this is not an uncommon issue with this engine. Upon further research, I discovered many other 2018 Accord owners with the same 1.5L turbocharged engine have reported coolant intrusion, cylinder damage, and head gasket failures — often affecting cylinders 2 and 3 specifically. This appears to be a...

Honda Accord 1.5 TURBO, Head Gasket Blown for the second time in 2 years. The problem has been reproduce by dealer and independent service center. The car shakes when you turn on the car, first indication. Then all warning lights show up on dash board.Emission system Problem, Brake system, Vehicle instability, Adapative cruise control, road departue.

Head Gasket Blown on a 2018 Honda Accord 1.5 Turbo. Yes, yes warning lights have appeared.

Hi I just drive my car for about an 1hr and start losing power and a white smoke coming out the muffle I think the head gasket bad.

Honda has known for years that the 1.5L engines installed in 2018 or newer Honda Accords have issues with oil dilution causing major catastrophic engine failures, head gasket damage, fluids leaking into the cylinders, and costly repairs to cars with less than 86000 miles on them. Honda Corporation needs to address this concern before someone dies when the cars engine fails on the highway. My vehicles engine failed on a major road when I pushed on the gas peddle and had no power due to these concerns. Dealership stated numerous vehicles are coming in with these concerns right now which begs the question that it is not a one off situation but a failure of Honda Corporation.

While attempting to pass a slower vehicle in my 2018 Honda Accord with a 1.5L engine, the suddenly lost power and stalled down to 20 mph while I was alongside the other vehicle. This unexpected power loss put my life and the lives of others at serious life threatening risk. I immediately brought the care to a Honda dealership, where the tech was able to reproduce the issue. The performed a borescope inspection and confirmed that coolant was present inside one of the cylinders, indicating a failed cylinder head gasket. This type of failure should not happen, especially on a vehicle like this. I was the repair would cost $6,500. After researching, I learned that this is a known defect affecting the 1.5L engine and that multiple class action lawsuits have been filed. I also discovered that American Honda is aware of the problem and has instructed dealership service departments...

Car had a rough start one morning. The engine light came on. All safety features were disabled. I took it to the car dealership that same day (sunset Honda San Luis Obispo California) they got back to me and said the car had head gasket failure. The dealership was the only person to do any meaningful mechanical work ( I did the oil changes) including transmission fluid and coolant changes spark plugs, belt sand valve adjustments etc. car is driven lightly as a daily commuter for work

All lights on head dash are on , all components are not working properly or effected because of this. (Engine light brake light abs light tire light traction control light , sensors out all) while driving vechile reduces power does not operate randomly , have to pull over shut the car off and turn it back on. Has high vibrations lot of shaking, stauling. I have had it looked at with multiple shops and dealer . Everybody is playing a guessing game and can not pin point what exactly it is . Was told it was spark plugs and coils, alternator , fuel injectors. ALL have been repaired, and still have all lights on dash and still facing every problem listed after repairs. Been inspected by manufacturer. Say not been resolved was told if it wasn’t what was already fixed they don’t know and that this is very common right...

The contact owns a 2018 Honda Accord. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated, prompting the contact to pull over to the shoulder of the roadway where the failure persisted. The vehicle was taken to the dealer, who diagnosed a failure with the head gasket, resulting in a misfire in cylinder #3. The contact was informed that the head gasket needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened for a goodwill assistance claim, and the contact was referred to the NHTSA Hotline for assistance. The contact was later informed that the goodwill assistance request was denied due to a lack of service records with a Honda dealer. The failure mileage was 74,000. The VIN was not available.

Engine malfunction. Goes into “limp mode” going over 1800 RPM. Dealer has replaced engine coils and plugs multiple times. Sold as Honda True Used with warranty. Dealer states it’s out of warranty.

The contact owns a 2018 Honda Accord. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the vehicle failed to exceed 10 MPH while driving. In addition, the contact stated when the vehicle was started, several unknown warning lights were illuminated. The vehicle was taken to the dealer where it was diagnosed with head gasket, fuel injectors, and turbo charger failures. The contact was informed that the head gasket, fuel injector, and the turbo charger needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 90,012.

The head gasket on my car blew before 150,000 miles. I had my car repeatedly serviced to include the recall for the fuel tank. I had to replace fuel injectors in a head gasket on this vehicle.

2018 Honda Accord 1.5T EX trim and I had a head gasket completely blown at around 82,600 miles. I, alongside with many many other 1.5T Accord owners, am experiencing this head gasket issue for such a low milage vehicle and it is simply inacceptable and Honda seems to be entirely ignoring this widespread, recurring problem on this engine. Reaching out and file a report in hopes of getting this to Honda's attention so they can address this asap. It has been 7 years since this problem and nothing has changed, which is not okay.

Head gasket blown

Well to start I had to replace my head gasket already last winter at 59K miles and for awhile now I had warning lights on my dash for CMBS system failure and cruise control/steering wheel controls don’t work besides the ones for music. No lane assist, none of those safety features work at all and haven’t for awhile

2/24/2025 Safety Recall work performed at Honda Marin; change Fuel Pump per recall. 4/28/2025 I reported vehicle stalling/misfiring, decelerating on its own and all lights keep coming on as a result of Fuel Pump change. Marin Honda performed cleaning of battery cables; technician claims nothing is wrong with the car. [XXX] car stalled at intersection, I went back to Honda Marin and reported vehicle is still having the same previous issues and complained that this is dangerous to have the car automatically decelerated on its own. This time I requested only for a diagnostic from Honda Marin. They spoke to my mom, who was not authorized to approve any work on my car, stated no blown head gaskets but mis-firing on cylinder 3, fixed the issue, passed pressure test(s), no leaks; and car was up to factory specks costs $2812.77 charged to my mom. 6/03/2025 brought car back to Honda...

Doesn’t run as it should,all lights and warnings show on the dash

July 10th Honda went into limp mode as I accelerated would not drive over 20. Check engine light flashed on then off. Have taken car in several times no codes can be read. Believe it’s cylinder issues or fuel possible head gasket. All vehicle lights has displayed haven’t been able to get reads once car is turned off. Too many issues with no repair fix.

I never was informed about the fuel pump recall , all the lights on my car came on , acceleration was slower , car was jerking , and when taking it to Honda they stated 2 of my cylinders has a misfire and water or coolant leaked and blew my head gasket , the car never ran hot and the guy asked did any light come on and I told him for some old reason every light on the dash was on and the car is vibrating while even in park reverse and when it's moving . I've read up on this and there are numerous of people with this same issue and this should mean something , Honda stated it would cost 6000 to fix when they should have already been warning people of the matter ahead of time . For some odd reason the car would just drive...

There are 10 warning lights currently on the dash. This is and has been an ongoing issue for over a year. Turning off the car then turning it back on the lights would go away. The car would periodically start to slow on its own while foot was still on the gas pedal which was dangerous in the middle of traffic or going 65 to 70 miles per hour on a highway. December 31, 2024 my car got towed to the Honda Dealership because the car stalled and wouldn't go past 15 miles per hour. Again the dash lit up. It was my understanding that it was because of the latest recall of the fuel pump issue that took over a year to be completed. The recall of the fuel pump was done January 6, 2025which took a week to complete and a week of work I missed with no...

I went to enter the highway and the car would not accelerate and the check engine light was flashing and went into a limp mode. I got it looked at it it was giving me the misfire code for cylinder 2. I paid over $1k and had all the spark plugs replaced and coils. It was fine and then 6 days later it happened again. The mechanic looked at it pressurized with the bore scope and saw coolant. Then we knew it was the head gasket. This is crazy especially with Hondas being known for reliability. I’m at 87k miles and have been seeing that this happening to many others.

Dashboard lit up with a lot of lights and stuff

All of the lights in the dash came on . We took it to Honda , at first they said it was the coils and spark plugs. I had them replaced , the same thing happened again the computer read that it was misfiring on one of the cylinders . They kept it and ran several tests . They then tried to say that it the result of a bad oil change but we knew better. After about a month they said that it had over heated and blown the head gasket . I ended up having to use my warranty and pay a deductible.

I own a 2018 Honda Accord (1.5L Turbo Engine) and I have kept regular maintenance on the vehicle. I currently have 146,600 miles on the vehicle. I begin having problems last year as I was leaving work and my vehicle wouldn't start. I waited a few minutes for the vehicle to start and it started and several malfunction lights came on the dash including the engine light. I had a 30 minute drive home and as I was driving home the vehicle didn't want to pick up speed to the speed limit of 65. I drove slowly home. I had already made an appt with the Honda Dealership where I get my car serviced for an oil change a couple days before. The next day I had a family member to follow me 30 minutes away to the dealership to drop my car off. When I dropped the car off...