general problems of the 2018 Honda Accord - part 2

While on the highway, going approximately 60-65mph, lights on my dashboard suddenly lit up and turned right back off as my car began to decelerate on its own. After I was able to get my car off to the side of the highway, I had to have it towed home as it was inoperable. I had it towed to my preferred auto shop and they discovered the engine had failed at only 84,000 miles. The total cost was approximately $8,600. After a bit of research, it seems this is a known issue for this engine model from Honda and nothing has come of it so far.

Blown head gasket after multiple spark plug replacements for misfires.

The head gasket failed on my 2018 Honda Accord 2. 0t at 81,000 miles due to weak factory head bolts stretching under turbo boost, causing cooling system over-pressurization and risk of engine stalling/overheating.

- the car's automated systems randomly applies severe breaking at improper times - the cars head gasket has blown and in turn has blown the radiator and thermostat.

The head gasket was blown on highway even though the car was functioning perfectly fine and was well maintained.

The head gasket malfunctioned/ broke. It has been confirmed by the Honda dealer where I currently have my vehicle. There were no messages or symptoms prior to failure. My safety and others were put at risk because my vehicle began to turn off as I was driving up a hill with no warning. The vehicle began to decelerate.

At 154,000 I’m forced to replace my head gasket and fuel injectors and lots of other stuff because my head gasket failed driving in the freeway and went into limp mode and several light turned on and lost all power thankfully I was able to pull over safely and shut off the vehicle for 10 minutes and start back up with no limp mode and drove to Honda and informed me my head gasket failed had failed my last Honda was at 320,000 and no head gasket failed this is insane and no recall or fix.

My vehicle will not drive past 20 mph,it randomly goes into limp mode with traveling ! I’ve have it tested multiple times and no one seems to know what the issue is !.

Head gasket went bad after only 107,000 miles . A lot of other Honda Accord owners have the same problem . Had to get it repaired . This should be a recall . Not safe to drive .

The engine stalled on the freeway. Has been having rough idles on cold start. Water gurgling/sloshing sounds coming from behind the dash on cold start. White, sweet smelling smoke periodically comes from the exhaust. Followed up with spark plug replacements. The vehicle still has all previous issues. Upon further inspection coolant reservoir is empty indicated a leak. No leaking fluid has been found. Suggests internal leaking. Issue is likely failing head gasket issue. Bissel v. American Honda CO. Has been suing over this issue. The head gasket is allowing coolant into the cylinders mixing with fuel causing misfires and stalling the engine. Extremely dangerous. Likely to cause accidents.

I own a 2018 Honda Accord. While driving 30 mph the vehicle experienced head gasket failure/engine failure-trouble. The vehicle lost automotive power and decelerated to 5 mph. I was able to drive safely. The engine light was illuminated as well as all dashboard lights were illuminated. The vehicle was taken to the local mechanic immediately, where it was diagnosed with a misfire in cylinders #2 a computer code malfunction, and then taken to dealer immediately from there. Dealer ran and found same code. Found a blown head gasket. (charging me a diagnostic code for same reading. ) the vehicle was repaired privately as dealer wanted more than $1000. More to do the work. The manufacturer was contacted and assisted with the cost of the repair. The manufacturer confirmed there was no warranty coverage on the vehicle. I am out $4524. 66 in repairs due to an issue that Honda is aware of and had done nothing to rectify.

My car is having issues with the head gasket. My car check engine lights came on like a lit christmas tree with many warnings (emission system, brake system, departure, uphill and many other more). I took my car into capital Honda for a diagnostic on 5/4/26 and they informed that it was the head gasket that needs to be replaced. They are charging me $6000 to repair and do not have the funds to fix. Also I contacted Honda corporate since I read on google that I may qualify for the goodwill program and they said I didn’t qualify since I did not purchase warranty on the vehicle when I got it. I also do see that there is a lawsuit in place for this. I’ve kept up with my car maintenance and never had an issue till now. The car is running rough and it’s shaking a lot. It’s also loosing coolant from the reservoir.

The contact owns a 2018 Honda Accord. The contact stated that while driving the vehicle she noticed a power issue with the vehicle, thinking it had to do with the battery, the vehicle was misfiring. The vehicle was towed three times to the dealer, where it was diagnosed with a engine failure. The second tow was to a independent mechanic, and the third time the vehicle was taken to a dealer where it was diagnosed to have a engine gasket failure. The contact was informed that there was a coolant intrusion in cylinder #2. The contact was informed that the head gasket needed to be replaced. The vehicle was repaired. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 73,000.

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 now . It first April 2026 (3) times. May 2 times 2026.

Blown head gasket.

I have a Honda Accord sport 2018 engine 1. 5l turbo(1. 5t) mileage- 97,776 I am reporting a suspected premature head gasket failure which is affecting my vehicle and my mechanic told me this has been going on for a while now with the Accords around my year model. On cold starts, the engine shakes and idles roughly for about 10-20sec. There has been some jerking during acceleration and prior stalling incidents. I have also experienced a blinking check engine light which indicates an active misfire condition. The vehicle has been maintained regularly and have proof upon request. The anti-freeze is leaking inside the cylinder 2 and 3 which is causing the misfires. The check engine light which is blinking is causing safety concern due to potential power loss and the risk of stalling while driving. This issue appears to be widespread among vehicles equipped with the 1. 5t but also around the years of my vehicle. Honda dealership brought it to my attention during the last recall, and my personal mechanic (independent service) diagnosed my car and mention the same thing. I believe this is a manufacturing or design defect and request that NHTSA investigate this issue for potential recall or required manufacturer remedy.

The head gaskets and turbo supercharger goes out at a certain amount of miles.

The contact owns a 2018 Honda Accord. The contact stated that while driving approximately 70 mph, the engine temperature rose, and the vehicle lost automotive power. The contact pulled over to the side of the road, turned off the vehicle, and allowed the engine to cool down before restarting the vehicle, and the vehicle returned to normal operation. No warning lights were illuminated. The failure had occurred on several occasions. The vehicle was taken to the dealer to be diagnosed; however, the cause of the failure was undetermined. The vehicle was not repaired. The vehicle was taken to another dealer, balise Honda of west warwick (509 quaker ln, west warwick, ri 02893); where it was diagnosed with a blown head gasket, which was caused by coolant leaking into the cylinders. The contact was informed that the head gasket, fuel injectors, and several other unknown parts needed to be replaced. The contact researched and was made aware of an unknown NHTSA campaign; however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 166,000.

I am writing to formally report a recurring and serious mechanical issue involving the head gasket in the 2018 Honda Accord equipped with the 1. 5l turbocharged engine. This issue appears to be widespread and poses both safety and financial concerns for vehicle owners. In my experience, the vehicle began exhibiting symptoms consistent with head gasket failure at relatively low mileage. These symptoms included unexplained coolant loss, engine overheating, white exhaust smoke, rough engine performance, and in some cases misfires. Upon inspection and diagnosis, the root cause was identified as a failed or failing head gasket. This failure is particularly concerning because it occurs prematurely and without warning, despite regular maintenance and responsible vehicle use. A head gasket is a critical engine component, and such failures can lead to severe engine damage, sudden loss of power, and unsafe driving conditions—especially if overheating occurs while the vehicle is in motion. Additionally, the cost of repair is substantial, often ranging from several thousand dollars, placing an unexpected financial burden on owners. Many drivers, including myself, rely on these vehicles for daily transportation, and this defect undermines the reliability that is expected from a modern vehicle. There is growing evidence through consumer reports, online forums, and mechanic feedback that this is not an isolated incident but rather a pattern affecting multiple 2018 Honda Accord 1. 5l vehicles. The consistency of these reports suggests a potential design or manufacturing defect related to the engine or head gasket system. Given the safety implications and frequency of occurrence, I respectfully request that the NHTSA investigate this issue further to determine whether a recall or manufacturer accountability action is warranted. Addressing this defect would help prevent further financial hardship and reduce the risk of unsafe driving conditions for affected vehicle owners.

Blown head gasket. This appears to be a widespread issue amongst all 10th gen Honda Accords due to a poorly designed engine by Honda.

1) the cylinder head gasket was “blown” and leaking coolant into cylinder 2. 2) as I was merging into traffic, my vehicle suddenly lost power and entered limp mode and the check engine light began flashing. 3) yes, serviced at the dealer and confirmed 4) inspected by dealer 5) no.

While driving at highway speeds, the vehicle experienced a sudden jerking and a catastrophic loss of motive power (limp mode). Simultaneously, multiple safety systems failed, including the collision mitigation braking system (cmbs), adaptive cruise control, and road departure mitigation. The vehicle became a road hazard in active traffic. A certified Honda dealership technician inspected the vehicle and confirmed a premature head gasket failure with coolant intrusion into cylinders 2 and 3. The engine is non-drivable and the vehicle is at 84,000 miles. Despite the documented nature of this design defect and its current litigation, american Honda motor CO. Has denied any assistance. The vehicle also has an open safety recall (24-009) for a fuel pump failure which presents identical safety symptoms.

I own a 2018 Honda Accord ex-l with a 1. 5l turbocharged engine. The vehicle began overheating while idling and at low speeds, cooling down when driving at higher speeds. I brought the vehicle to a Honda dealership where a pressure test confirmed internal coolant loss with no external leaks found. The dealership diagnosed a head gasket failure and recommended replacement at a cost of $8,941. The component that failed is the head gasket on the 1. 5l turbocharged engine, allowing coolant to leak internally into the cylinder. My safety was put at risk as the vehicle overheated while in traffic during normal driving conditions, creating a risk of engine failure, loss of power, and potential fire. The problem was confirmed by a certified Honda dealership via cooling system pressure test. A goodwill request has been submitted to american Honda on my behalf. Warning lights appeared on the dashboard twice indicating to turn the vehicle off immediately due to overheating. Symptoms first appeared in April 2026. I am aware of NHTSA TSB mc-10234626-0001 and an active class action lawsuit bissell v. American Honda motor CO. Case no. 3:24-cv-02286 addressing this exact defect on this exact engine.

Driving in a construction zone. Two lane highway and my car immediately went into limp mode. Left me and my children stranded on the side of the road while semis and cars driving 65 mph went past very close to us. Honda knows these Accords have head gasket issues and it is unsafe to be driving them.

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.

Head gasket failure, over heated randomly putting myself and kids unsafe and at risk for accident. Been confirmed by independent service center. Not inspected by police or insurance. Had cylinder misfire a week prior.

Vehicle has only 48,037 miles. Diagnosed with bad cylinders 1 and 2 . Coolant also contaminated cylinders. I took vehicle to autonation Honda corpus christi twice before the diagnosis. Vehicle was running rough. When first turn on engine especially when it is cold, there's a lot of engine shakes. Same as in when on idle. Technician said he could not duplicate problem but did not perform diagnostics. Vehicle was released. New coolant was added because tech said it was low, brake fluids flushed, new sway bars were installed and wheel alignment performed. After a week, all engine lights came on while driving at 30 mph. Stopped the vehicle and get towed to the dealership. Diagnostics: blown head gasket, bad cylinders and needed new engine. Did a research and these were the Accord problems that were never addressed by Honda. Problems also included turbos and fuel injectors.

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.

First I had to replace all injectors and now I have a cylinder 4 misfire and need a head gasket job that’s being quoted at $5000!!! I’ve done all maintenance and upkeep and my car looks new. I’m in Honda groups and this is happening to everyone with the 10th generation Accord that’s 1. 5t engine. This should be a recall! I thought Hondas were the best. This is ridiculous and the car has no life. It’s literally in limp mode.

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.

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).

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.

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.

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.

I had a misfire on cylinder three. All vehicle lights came on. Vehicle had spark plugs and fuel injectors replaced. The problem persisted and the next code I received was a turbo burst under pressure code. So turbo and water pump were replaced. This made the problem worse because the new turbo made the head gasket leak. Now after paying $4000 in repairs I have to have the head gasket replaced for another $3000. This is a serious problem with these cars. Wish I never bought this piece of trash. I also replaced all break rotors pads and hoses. Terrible vehicle. Do not buy.