What 1,812 owners told NHTSA about the 2018 Honda Accord Plug In Hybrid

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.

NHTSA ODI 11676170

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 to report affected vehicles. In fact, they have even offered gift cards to service advisors who report these cases, but are charging customers for the repairs. That's nonsense. Just do a simple google search and you will discover what I did. During the failure, the check engine light and several other warning lights came on but only the check engine remained on. Since then the car has multiple indicator lights on. Despite multiple attempts to follow-up, the dealership has refused to return my calls. This is a serious life threatening safety concern that deserves immediate investigation. Thank you. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11676171

Vibration in car took it to dealership but still can't figure out what's causing to vibrate so much when driving and idling.

NHTSA ODI 11675326

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.

NHTSA ODI 11674038

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.

NHTSA ODI 11673782

Head gasket blown

NHTSA ODI 11673526

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 Marin, same issues; service dept. road tested for 4 miles and stated the car was working as normal. 6/11/2025 told Honda Marin that the car is stalling and misfiring again; car shut down while on freeway; Honda Marin claimed problem was a punctured hose, charged $10.34 car up to factory specks. 6/12/2025 Brought car back to Honda Marin; still misfiring, stalling and dash lights coming on. Car will not accelerate past 3000rpm.; car shut down while in far left land on the [XXX] going to Marin County. Honda Marin performed leaked down test failed cylinder #4; blown head gasket; verbal quote approximately $5500.00 to fix. In addition to engine failures I had battery issues as well. Per reddit threads others too are having very similar issues, once the fuel pump is replaced, unexpected additional costs and safety failures often occur. This is a Honda Manufacturing Defect, the original fuel pumps are defective, causing a direct impact on the performance of the engine, unexpected damages which is leading to major financial and safety costs to the consumer. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11673187

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.

NHTSA ODI 11673101

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 10mph when I am driving jumping out in traffic having to pull over and restart the car . Guy at Honda even stated fuel pump could have been the issue and they have witness this with other cars like mine

NHTSA ODI 11672629

all lights on dash are on at the same time

NHTSA ODI 11672474

The contact owns a 2018 Honda Accord. The contact stated that while driving 70 MPH, the vehicle jerked and failed to accelerate as intended while depressing the accelerator pedal, with several unknown warning lights illuminated. The contact stated that on a separate occasion, while driving 70 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal and the vehicle stalled. The contact was able to coast to the side of the road. The vehicle was restarted after several attempts. The vehicle was taken to the dealer; however, no cause for the failure was found. The contact stated that prior to the recent failure the vehicle was repaired under NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). However, the failure persisted. The vehicle was not repaired due to the cost. The contact was informed that some of the failures were not related to the recall. The manufacturer was not made aware of the failure. The failure mileage was unknown.

NHTSA ODI 11671772

All lights in dash is on took it to honda they playing a guessing game injectors head gasket sensors they really don’t know many people are complaining with the same problems

NHTSA ODI 11671285

I took vehicle in because of all the sensors were going off. Honda ran a systems check and said fuel injectors needed to be replaced. It is all over the internet that this is a known issue and a recall was not issued. I spent $1500 on the replacement. These should not need replacing on an 18 accord with 80,000 miles. The recall on the fuel pump has not been addressed because Honda has limited parts. How do I know this did not affect the fuel injectors

NHTSA ODI 11670192

The contact owns a 2018 Honda Accord. The contact stated while driving at an undisclosed speed, the vehicle stalled and then went into LIMP Mode. The vehicle was able to be restarted. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). The dealer was contacted and confirmed that parts were not yet available. The manufacturer was made aware of the failure. The failure mileage was approximately 150,000. Parts distribution disconnect.

NHTSA ODI 11664932

Apparently the coolant is leaking into chamber 2 and 3 and it’s burning it and I need to replace the head gasket. Spoke to and looked up a bunch of other people have had this same issue. It’s causing my car to stutter and it’s scary.

NHTSA ODI 11664707

The contact's wife owns a 2018 Honda Accord. The contact stated that while his wife was driving at various speeds, several unknown warning lights were illuminated. The contact stated that the warning lights were illuminated constantly. The vehicle was taken to a local dealer, where it was diagnosed and determined that the fuel system was contaminated with water. The contact stated that the dealer replaced the spark plugs and flushed the fuel system; however, the failure recurred while driving. Additionally, the contact stated that the cruise control mode was no longer functional. The vehicle was taken back to the same dealer, where the contact was informed that further diagnostic testing was needed to determine the cause of the failure. The vehicle was not repaired. The manufacturer was informed of the failure, but the contact had not received a call back. The failure mileage was approximately 66,000.

NHTSA ODI 11662577

Hello, the fuel pump which is recalled on my vehicle failed and was replaced with an aftermarket pump so I could take it to the dealership. Once I took it the dealership refused to go ahead with the recall and basically told me it’s not their problem. They are required to get it done for customers but they refused to fix mine.

NHTSA ODI 11662598

UNKNOWN I received the notice that there was an active recall on my 2018 Honda about the 1.5 Fuel Pump. I have scheduled several appointments to fix this, only for Honda to cancel all appointments related to the recall, stating they didn't have the part. I was headed to work, and every light on the dashboard that could come up, came up. There were several warning lights from brakes, transmission, collision, engine, etc. I took the car to the dealership, and they discovered that the fuel injector was the culprit. I am outraged because they're denying there's a connection, and I believe otherwise.

NHTSA ODI 11661335

Various 2018-2022 Honda Accord owners had fuel injector failures caused by the faulty factory fuel pump molding. The fuel pump has been recalled; however, not before the fuel injectors fail. My Accord recently got an array of warning lights pop up on the dash while driving on the highway. I read the code and it was a cylinder 3 misfire. A diagnosis has led to the discovery that the fuel injectors are failing, most likely because of the bad fuel pump molding affecting the pressure of the fuel lines. Not only could this have led to my car stalling on the highway, it led to a complete disabling of my safety features while driving. Honda should be held responsible for the fuel injectors failing caused directly by their fuel pump molding deviation.

NHTSA ODI 11660560

All lights on dash Illuminated. They have come on several times. While driving. You don’t know if brakes, engine, acceleration will work. Limp mode activates or not. Fuel injector seems to be a problem with misfiring or some other issue

NHTSA ODI 11659860

Bad fuel injectors $2000 Bad head Gasket $5000 2018 Honda Accord 1.5T with 80K miles, well maintained 1-owner

NHTSA ODI 11659142

My vehicle is stalling out. The engine failed. I was traveling and had to pull off the interstate and stop and restart vehicle. It was very dangerous as traffic was going at a high rate of speed. Yes the vehicle has been confirmed by a dealer. Yes all the warning lights are on in the vehicle.

NHTSA ODI 11657475

This car had a manufacturer recall for the "fuel pump". I was advised by Honda to go get the car checked by the dealer to evaluate if the issues I was getting were related to the recall. I paid close to $400 to get the car diagnosed and about 3/4 months after that I was told that the part is available for the recall service. I got the repair scheduled at the dealership and got the part replaced. Ever since I got this fuel pump replaced, now the car is struggling to pickup. It looks like a miss fire but it doesn't show any errors on display. In this condition, this car is not safe to drive around as it is skipping the engine thrusts. I have looked at Honda website and other online resources and people are talking about these issues but HONDA hasn't said or done anything about it. It all started after I got the fuel filter replaced.

NHTSA ODI 11657150

Cylinder 1 misfire intake air leak incorrect fuel pressure insufficient compression in cylinder faulty or improper spark plugs poor connection at fuel injectors open or short in fuel injectors circuit clogged fuel injectors poor connection at ignition coil open in ignition coil circuit faulty ignition coils

NHTSA ODI 11655351

About a week ago my all my dash lights came on dash. Doing some research I found there was a safety recall on my vehicle that I did not know about. I scheduled an appointment with Honda to get it replaced, they informed me that the fuel injectors needed to replaced and were causing misfires. They claim this is not directly correlated to the recall but I believe that it is

NHTSA ODI 11655538