The car loses power. It starts as a misfire on cylinder 2 (P0302 code) and the engine starts to shutdown (or goes into a safe mode with no power). The result is loss of speed which creates a safety hazard especially on highways. This has happened multiple times and the car has been in the shop 4 times for this issue. We have to pull off the road, turn the car off, sit for a minute and restart the car. It will then run ok. This has happened during acceleration and when just trying to keep speed on an incline. The dealership has not been able to identify an issue. The head gasket was replaced in April 2025 because they thought there was a pin hole that was causing oil to push into the cylinder. The misfire continued to happen. It was in the shop on October 2025 and they found nothing wrong with the spark plug, induction coils, gas feed. Therefore no understanding of the root cause.

- West Chester, OH, USA

I lost power to the vehicle in the middle of the road as I was accelerating uphill approaching a stop light getting ready to get on the on ramp to the highway. All the dashboard lights came on and the check engine light was flashing. I had to let my car idle it's way to the side of the road. I took my car to a Honda dealership. Diagnosis showed cylinder 3 misfire, coolant leaking into cylinder 3 indicating a blown head gasket. A couple of weeks before the loss of power to the vehicle, my car was sputtering and jerking when accelerating. It would get really bad when accelerating uphill.

- Bremerton, WA, USA

Bad fuel injectors reported by diagnostic testing done by Honda dealership after recall was completed on fuel pump. All warning lights on dashboard lite up and multiple warnings from car. This is a known issue with these specific Honda engines. Very costly repairs that if not completed can cause other engine issues.

- St Charles, IL, USA

I own a 2018 Honda Accord with approximately 131,000 miles. The vehicle suffered a blown head gasket that my mechanic identified as originating from a known design or manufacturing defect in Honda-??s 1.5-liter turbocharged engine. They diagnosed the problem before they had my vehicle in their possession because they have already seen this so many times in other 2018 Honda Accords. The engine began showing symptoms such as coolant loss, rough idle, "Christmas tree" engine lights, and an overheating warning light. There was no sign of external coolant leakage. A professional inspection confirmed head-gasket failure. I have maintained the vehicle according to Honda-??s recommended service schedule and have documentation for all maintenance. I contacted my local Honda dealership and Honda-??s customer service department seeking goodwill or warranty assistance. Despite multiple attempts and escalation to a -??warranty specialist, -?? Honda denied coverage and refused to contribute to repairs. The repair estimate exceeds $5,700, which is unacceptable for a vehicle with regular maintenance and a known pattern of premature engine failures. Online owner forums and public databases show many other reports of the same issue. I believe this defect poses a safety concern, as overheating or sudden engine failure can occur while driving, creating risk of loss of power, stalling, or fire. I am requesting that NHTSA investigate the widespread head-gasket and engine failures on late-model Honda vehicles equipped with this engine to determine whether a recall or manufacturer accountability action is warranted.

- Lavergne, TN, USA

I own a 2018 Honda Accord EX-L equipped with the 1.5-liter turbo engine. Over time, the vehicle began showing symptoms of coolant loss without any visible leaks, a sweet odor under the hood, and intermittent white smoke from the exhaust after startup. The engine would sometimes idle roughly and hesitate under acceleration. No external leaks were found by my mechanic. I later learned that these symptoms are consistent with a possible head-gasket or coolant-intrusion issue affecting this engine type. The problem poses a potential safety risk because coolant can enter the combustion chambers, leading to engine misfire, loss of power, or complete engine failure while driving. The issue has not yet been formally recalled, but I have seen multiple complaints and reports of similar failures in 2018-?"2022 Accords, Civics, and CR-Vs with the same 1.5-liter turbo engine. A warning light (-??check engine-??) appeared intermittently, and the temperature gauge fluctuated during normal driving. The problem has been inspected by an independent repair shop, but Honda has not provided a permanent repair or warranty coverage. The issue appears to be consistent with the allegations in recent class action filings regarding head-gasket and coolant-leak defects in Honda 1.5T engines.

- Gleview, IL, USA

While driving the car, the oil light came on and the engine died. Losing vehicle power while driving poses a very serious safety risk. After taking it to a Honda dealership, the mechanic diagnosed the following issue: "head gasket has failed causing coolant to leak into Cylinder 3".

- Mason, OH, USA

Head gasket leak after replacing recalled fuel pump. Took my car in for safety recall on fuel pump, just 24 hrs later every check engine light came on and my vehicle slowed to a stop (car went into limp mode). This happened on a busy street with vehicles flying by. I had my vehicle towed to Lancaster Honday (CA) where they did my safety recall the day before, they confirmed the head gasket leak. I had my vehicle diagnostics done at a different place as well and they confirmed the bad news, but also said this should not be happening to a new car with 66,000 miles. They advised I call corporate Honda and have them do a goodwill repair where the pay the repair since it is out of its 60,000 miles warranty. I had zero symptoms of this happening before it actually happened. I regularly had maintenance done on my car. I am very dissatisfied and disappointed that Honda just declined my goodwill repair after a month of waiting on them to -??review the case-??. I couldn-??t be more sad and more screwed at this time. $5000 is not something I have right now to take care of something I shouldn-??t have to. This is only happening to 1.5 liter Hondas in my certain year range. I wanted a 2.0 originally, but the dealership did not have any at the time so I am needing help. I will reach out to the ongoing pending lemon law case in CA to join the base and try to get my car fixed and have Honda do the right thing! I am not happy!

- Palmdale, CA, USA

Bad head gasket. Coolant leaking into cylinders

- Cypress, TX, USA

headgasket blew at 73k miles out of nowhere no check engine light no smoke no warning nothing car was taken care of its whole life car locked up during headgasket failure almost causing accident on road near house called Honda to explain the mishap they were snotty and acted like they didnt care wouldn't provide repair for free or even ask me if I was ok or if I needed help. I am a part of a 1oth generation honda group on Facebook and there are alot of us who should be helpedfor this very dangerous and random mishap

- Amsterdam, NY, USA

Driving on highway, check engine light went on and car lost all power would not go over 5 mph scared for my life as I was almost hit by other vehicles traveling at hi rates of speed. I managed to get the car to the shoulder. I turned the car off and restarted, and the car went back to operating normal. Car was checked by a friend who is a mechanic, and he told me there were codes for misfires after checking all the issues that could cause that type of problem he informed me that a pressure test on the coolant system revealed a blown head gasket which allowed coolant to leak in the cylinders causing miss fires due to the anti freeze extinguishing the spark of the spark plugs. I researched this matter and it's see to be a very common problem with many hondas with the 1.5 engine

- Old Bridge, NJ, USA

My 2018 Honda Accord at only 63,000 started to lose power and all the emergency lights went on. Diagnosed as a misfire and now requires a new head gasket. This was told to me by the dealer to be a well known problem with the 1.5 T 2018 Honda Accord.

- Ben Lomond , CA, USA

The contact owns a 2018 Honda Accord. The contact stated that occasionally, while driving at various speeds, the vehicle jerked and the engine lost compression. The check engine warning light was occasionally illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the spark plugs needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was towed back to the same local dealer where it was diagnosed with a blown head gasket. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 112,000.

- Jacksonville, FL, USA

My 2018 Honda Accord EX is currently having FUEL injector problems at 41,000 miles. Honda is trying to tell me that FUEL injectors do NOT get affected by the recalled FUEL pump. This is very silly because the FUEL pump and FUEL injectors work together. They want $1,800 to replace the FUEL injectors at Honda. I already completed the recall on the FUEL pump, and afterward, they told me my injector was running too rich and needed to be replaced for $1800. There are so many Honda 1.5Ts experiencing these same issues, and Honda does not want to do anything about it. I am currently taking my car to a local shop to get the FUEL injectors replaced for $1,327. I believe I should be reimbursed since the FUEL pump is what caused my FUEL injectors to fail. Honda is trying to tell me that two FUEL components of a car don-??t correlate with each other? This isn-??t fair, and I need to be reimbursed.

- Saint Louis, MO, USA

The contact owns a 2018 Honda Accord. The contact stated that two weeks after the vehicle was repaired under an undisclosed NHTSA Campaign, the message "See Dealer" was displayed. Several unknown warning lights were illuminated. The vehicle was towed to the same local dealer, and the fuel injectors were replaced. The contact stated that while her daughter was driving at an undisclosed speed, the engine temperature gauge became elevated. The vehicle was taken to a local independent mechanic; however, the failure could not be duplicated. The contact stated that after starting the vehicle, the check engine warning light illuminated. The vehicle was taken to a local O' riley, where it was diagnosed with turbo assembly sensor failure. The vehicle was taken to a local independent mechanic, where it was diagnosed with a turbo assembly sensor failure. The vehicle was repaired; however, there was a misfire coming from the engine. The spark plugs, coils, and battery were replaced; however, approximately 6 days later, the check engine warning light illuminated. The vehicle was taken back to the same independent mechanic, where it was diagnosed with a rocker arm oil control solenoid failure. The manufacturer was made aware of the failure and informed the contact that, due to the age and mileage of the vehicle, a Goodwill service would not be performed. The failure mileage was approximately 116,699.

- Winston-Salem, NC, USA

Recently bought this car a month ago. I started having problems with acceleration, as if the car was -??bucking-?? every time i would press the gas normally at a red light or stop sign, accelerating from a stop. The vehicle wouldn-??t make it up a hill while accelerating it was very hard bucking. I tried pressing the gas a little harder and the check engine light flashed and the car went into limp mode so i had to pull over. Made it back home and i was driving normally and every light you can imagine came up on the dash. I-??ve heard from many others with the accord they-??ve had the same problems but once they get it fixed the problems keep happening or the vehicle blows up. I just paid full in cash for this car and my total is fix it is already at 5k to fix.

- Cleveland , TN, USA

I own a 2018 Honda Accord Sport. About 2-?"3 months ago, the car began having repeated engine misfires (P0301), hesitation, and stalling while driving. At the same time, multiple dashboard warnings appear, including Steering Assist Reduced, Brake System Problem, Collision Mitigation Braking System Problem, Adaptive Cruise Control System Problem, Emission System Problem, and Hill Start Assist Problem, these failures occur suddenly while the vehicle is in motion, creating a serious risk of loss of engine power, reduced braking performance, loss of steering assist, and disabled crash-avoidance systems. I have already performed extensive maintenance: new ignition coils, a full tune-up, compression test, spark test, and battery/alternator check, yet the issues remain. Diagnostic scans also showed U0416-68 (invalid data from ABS/VSA module) in addition to the misfire. This suggests not only a fuel/propulsion defect but also a possible computer/control module failure that links engine, brakes, steering, and ADAS systems. These conditions match known recalls for the Accord, including 23V858000 (fuel pump failure), 20V314000 (low-pressure fuel pump), and 20V771000 (BCM software issue), yet my VIN does not currently show as included. The fact that multiple critical safety systems fail simultaneously makes this a major safety hazard that could easily lead to an accident if the car stalls, loses braking, or loses steering assist in traffic. I opened a case with Honda Customer Service (Case #15868389), but they refused to cover the repair since my VIN is not listed, despite the failures being identical to those described in the recalls. I strongly believe my vehicle should be included, and I request that NHTSA investigate whether the recall VIN range needs to be expanded.

- White Plains, NY, USA

Turbocharger. All dashboard lights are on in vehicle. All safety measures implanted in the vehicle (land departure, cruise control, etc) is not working. The vehicle jerks when attempting to accelerate over 40 mph.

- Mendenhall, MS, USA

Head Gasket

- Cherry Valley, MA, USA

Engine head gasket failed allowing a coolant leakage, which damaged spark plugs and fuel injectors. There is video evidence of this failure provided by the dealership service center. Link to video: [XXX] This occurred at approximately 70k mileage, which is far earlier than a failure like this would be reasonably foreseeable. I see many, many, others online who have had the same failure on my model of car at similar (early) mileages of 70k-90k. My car lost power on the highway, leading to a dangerous driving condition for myself an others. There was no obvious warnings that this would occur. After pulling over and turning off then turning on the car again, the car was intermittently drivable, with clear engine trouble. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Minneapolis, MN, USA

The Cylinder head gasket The vehicle heats up and causes us to pull over which impedes traffic The maker knows of said issue but has yet to address it A qualified mechanic has examined the vehicle and diagnosed the issue There was no warning

- Thousand Palms, CA, USA