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.
2018 Honda Accord engine complaints
Page 4 of 21: complaints 71 to 100 of 587, newest first, as owners wrote them.
Blown Head Gasket
Bad engine, and Honda knows it, and they will not fix my car. I have reported this to Honda America and Honda Japan. Cylinder 2 and the head gasket went bad at 77,000 miles. I am disabled and a full-time student. This was diagnosed at Honda Autonation in Columbus Ga. I even asked whether they would take it as a trade-in. They said no, so my next step is to file a class action lawsuit against Honda when they should have just accepted responsibility and fixed my car. There is a forum on Reddit and Facebook with 1000s of people with the same problem. [XXX] [XXX] Mailing address: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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.
2018 Honda Accord EX-L with the 2.0L turbocharged engine. At approximately 113,000 miles the head gasket failed, allowing engine coolant to leak into cylinders 2 and 3. Symptoms included repeated cold-start engine misfires (diagnostic codes P0302, P0303, P0300), illuminated check-engine light, intermittent loss of power / limp mode, and gradual loss of coolant with no visible external leak. The failure was confirmed by an independent mechanic as a blown head gasket between cylinders 2 and 3. This matches a widely reported design defect in Honda's 1.5L and 2.0L turbocharged engines (2016–2022 Accord, Civic, CR-V, Acura RDX/TLX) that is the subject of federal class-action litigation. The sudden power loss this defect can cause while driving presents a safety risk. Repair cost approximately $6,000, paid out of pocket, with no recall in effect. Requesting the federal safety agency investigate a potential design defect and recall.
Head gasket blew, commin problem among all these accords
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 !
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.
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.
Known issue by Honda; 2018 Honda Accord Sport, 1.5L 6S Manual Transmission. Head Gasket is blown, alongside failed fuel injectors for the 1.5L motor. Vehicle has been misfiring. Not accelerating properly which is causing the vehicle to suddenly slow down in traffic, promting potential vause for accidents. Almost was involved in 2 accidents due to the sudden and complete loss of power at a decent rate of speed. CEL came on twice, which then disappeared and the vehicle acted "normal" until acceleration. Took vehicle to a Honda Dealer and was told it was the "spark plugs and the coil packs", even after explaining to them that there was engine oil on the piston heads, and low coolant. Left the dealer upset that they barely did any diagnostic work, and took it to an independant shop that actually completed a proper diagnostic performance, and confirmed the head gasket is leaking coolant, and the fuel injectors are failing. Known common issue that Honda is failing to recognize.
The contact owns a 2018 Honda Accord. The contact stated that the vehicle was taken to the dealer for an oil change; however, after leaving the dealer, the vehicle stalled while driving 25 MPH. The contact returned to the dealer and notified the dealer of the issue. The contact was informed that the vehicle had experienced head gasket failure and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, and the contact was referred to the federal safety agency Hotline for additional assistance. The failure mileage was 99,000.
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.
I own a 2018 Honda Accord equipped with the 1.5L turbocharged engine. At approximately 53,666 miles, the vehicle developed a rough idle, engine shaking during startup, intermittent check engine light, and a cylinder 1 misfire code (P0301). I took the vehicle to a Honda dealership for diagnosis. The dealership confirmed coolant intrusion into cylinder #1 after performing a cooling system pressure test and borescope inspection. The dealership determined that the engine has a failed head gasket and provided a repair estimate exceeding $6,000. The dealership advised that the vehicle should not be driven because coolant entering the cylinder can cause further engine damage, loss of power, engine stalling, overheating, or complete engine failure while driving. I believe this is a safety concern because the engine may misfire, lose power, or fail unexpectedly during vehicle operation. A major engine failure at only 53,666 miles is not consistent with normal wear and tear. I am submitting this complaint so that the federal safety agency can investigate potential defects involving coolant intrusion, head gasket failure, and cylinder misfires in Honda Accord vehicles equipped with the 1.5L turbocharged engine.
coolant leaks into engine components, causing overheating, loss of power, and contamination of engine oil. Head gasket failed
Dashboard displayed multiple messages and icons/warnings. Steering wheel locked, acceleration was low, barely any power to drive. Engine running rough condition. OBD2 scanner P0302 and P0303 detected. Engine misfire. Honda Dealership diagnosis car. Main concerns include a head gasket blown or crack. Coolant leaking into cylinder 2 and 3. Tie rod cracked. Pressure test low. The vehicle has no prior history of cylinder head removal or head gasket replacement. Vehicle has been properly maintained through consistent oil changes.
Multiple misfires, dealer says blown head gasket after replacing coil and spark plugs. Quoted 6,500. Car still runs is not running hot no exhaust smoking. Told this is common issue after fuel pump was on recall and replaced. After fuel pump replaced car smelled of gas for 3 weeks.
Blown head gasket between cylinders 2 and 3 at only 100k miles. Leaking coolant and causing overheating
I have been having issues with my check engine light being on for about 6 months now. Took the car to Honda to get it diagnosed and was told that I needed to get spark plugs, fuel injectors, and ignition coils. Got all of that changed and the issues still remains. Had an outside mechanic take a look and he specializes in Hondas and was told that it is the head gasket, and that would be the only way the issue will get resolved. After taking the car to Honda 2 times and paying for diagnosis with the issue still there. I was getting on the interstate and my car just started stalling, had to immediately pull over before getting hit. I was quoted $3000 to have the head gasket done. This obviously is an ongoing issue with my model Hondas, and I am already out of pocket $1000 with the issue not even being resolved.
Our mechanic, Buttons Auto in [XXX], diagnosed the loss of power, misfiring engine and anti freeze in the head cylnder # 3 with code P0304 and his conclusion was a blown head gasket. We took our car to the dealer, Mansfield Motor Group. Buttons also mentioned there was a pending class action suit against Honda for head gasket failure on our model with the1.5 liter motor. Mansfield Motor Group misdiagnosed the cars issue and charge us $2100 for the repair. A couple days after we got the car back the problems continued. We took it back to the dealer and they then diagnosed the isuue as head gasket failure. We spent another $4600 to fix the headgasket repair A total of $6100 we spent. We did file a claim with Honda, #XXX, which they denied both times. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I have owned my Honda Accord for under a year, puchased around 100k miles. My head gasket blew at 118k miles. There was no overheating of the engine or warning lights before hand, my car was idling after work and I turned it on and then I had about 5 different warning lights on. I find out that it was a cylinder 2 misfire and took it to Joyce Koons Honda for them to inform me of a head gasket failure and quoted me for around $7,000.
I am writing to formally lodge a complaint regarding a recurring issue I have experienced with the head gasket in my vehicle. I have owned several vehicles of this make and model, and I have observed a troubling pattern of blown head gaskets that has not been adequately addressed. Specifically, my current vehicle has suffered from this problem, resulting in significant inconvenience and additional repair costs. This issue appears to be prevalent across this year model as well, suggesting a potential design flaw or manufacturing defect that warrants further investigation. I respectfully someone to look into this matter to determine if a broader safety concern exists that needs to be addressed. Owners of vehicles affected by this issue may be at risk of serious engine damage and costly repairs. Thank you for your attention to this important issue. I look forward to your response.
Head gasket seal broken, leading to coolant leak into the engine causing misfire
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.
I have owned a handful of Honda's and never had an issue with them. I own a 2018 Honda Accord Sport and when driving it all the lights on the dashboard lit up. The car left like it was stalling and wouldnt go past 2nd gear. I was almost rear ended by a car and had my 2 granddaughters ages [XXX] and [XXX] in the back seat. I took it to Honda dealership and they said the turbocharger needed replacing as well as a head gasket. My sister inlaw also owns a Honda like mine but hers is a 2021 and the same issue happen to her. It seems like this is an on going problem that Honda needs to address or assist customers with purchasing. It is not safe to continue to keep these cars with these issues on the road. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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 .
All of my dash lights are on.
Turbo Charger is failing. Dealer ran the codes and confirmed. All warning lights are cycling through.
Car seem to misfire alot , having a lot of head gaskets issues aswell as turbo issues, 10s of 1000s of people like me are experiencing these common problems, taking so much money out of our pockets when its should be handle the correct way
I own a 2018 Honda Accord with approximately 108,000 miles. My vehicle has experienced ongoing fuel system and drivability issues connected to the fuel pump recall. It took over two years for Honda to complete the recall repair due to delays and lack of available parts. During that time, my vehicle developed additional issues including failed fuel injectors that required replacement. Even after those repairs, the vehicle continues going into limp mode, causing loss of power and creating a serious safety concern while driving. When I brought the vehicle to Honda for diagnosis, I was charged approximately $180 just to scan the vehicle and then quoted nearly $4,000 in additional repairs. In addition, my vehicle experiences what many Honda owners refer to as the “Christmas lights” issue, where multiple warning lights suddenly illuminate across the dashboard at the same time. This appears to be a widespread complaint among owners of this model and is often associated with ongoing fuel system, electrical, or sensor-related problems. Honda vehicles are marketed as reliable, yet many owners of this model have reported similar problems related to the fuel system, injectors, limp mode, and dashboard warning light failures after the recall issues. I believe the prolonged delay in addressing the recall contributed to further damage to my vehicle. Honda should take responsibility for these known issues and provide assistance to affected customers.
While driving the car it went in to limp mode, restricting the ability to maintain normal driving. It did this because the head gasket needs to replaced because coolant is leaking into # 3 cylinder. My wife and others were put at risk when she had to pull over in an area that was unsafe according to a Summerville police officer who came to her aid and helped her get the car to a safe area.
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