2018 HONDA ACCORD Complaints

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.

My 2018 honda accord 1.5T EX-L has a head gasket failure, creating the potential for the engine to misfire and stall while driving. The car has been well maintained with all scheduled maintenance done on time. The need for new head gaskets has been assessed by a local dealership, and quoted at 4500-8500 dollars. The spark plugs have also seized, and if they break off during the repair, then that adds $4000 to rework the top of the engine. I replaced the spark plugs at 120,000 miles and around the 140,000 mile mark I started noticing the car would occasionally misfire while accelerating. I replaced all 4 coils, and the misfire issue persisted. It is intermittent for now, but indicative of a head gasket failure according to the dealership. The issue is most frequent when accelerating to highway speeds- ie a highway on ramp. One time the misfire put my car into "limp mode" on a tight on ramp, forcing me to restart the car in a dangerous situation. The other time it happened, I was thankfully able to coast downhill to an exit to restart my car. In either case, it created a dangerous loss of power, and given the head gaskets are not a wear item- it should not be the drivers responsibility to replace the faulty part.

The day I purchased the vehicle from the dealer, every warning light began cycling on including the automatic emergency braking failure, engine system failure and others. I immediately took the car back to the dealer and they supposedly repaired it. When the car was returned to me, I drove it for less than a week and the same thing happened again. When the light came on, the car’s auto braking and cruise control stopped working. I took it back to the dealer and they said it was the head gaskets, which they fixed. When I got the car back again, I drove it for 2 days and it did the same thing again, this time all of the warning codes came on. This time, I had a total engine failure because the timing chain broke. The dealer took almost two months to replace the engine and it cost us almost $6,000. I got the car back last Saturday. Today, driving home from work, the automatic brake system failure warning came on again and the car won’t automatically brake and cruise control wouldn’t work. This is exactly what happened last time. I am afraid to drive this car because I don’t know if the brakes will fail and the system currently isn’t working. We are taking it back to the dealer which will likely cost us more money. We are stuck with this car and cannot get rid of it because we owe more money on it then it is worth because of replacing the engine.

Car keeps throwing cylinder 2 misfire, replaced all spark plugs, fuel indicators and still having issues. Think it’s the ecm/pcm is bad or there’s a bad connection.

The gas pedal failed to work on three separate occasions. The car essentially went into “limp” mode where the whole car stop driving out of nowhere. These models of Honda are known for the head gasket prematurely going out which has caused me car to have multiple misfires, warning lights, loss of power. The problem has been confirmed by the dealership and an independent mechanic.

I experienced repeated stalling, loss of drive power while on the highway, limp mode, and all dashboard warning lights over several years. I brought the vehicle to an authorized Honda dealership multiple times and specifically asked whether these symptoms were related to the known fuel pump recall. Each time I was told the recall was not the cause. I was also told recall parts were unavailable or delayed. Based on dealership misdiagnoses, I paid out of pocket for multiple repairs including spark plugs and ignition coils which they claimed were the reason for my car acting up, that did not resolve the issue. Among other repairs I did on my own like replace the battery twice and what not. I have since received Honda’s official recall notice confirming that a faulty fuel pump causes the exact symptoms I reported. My vehicle is now completely inoperable it does not start and cannot be driven or transported. I have filed two claims with Honda Corporate, both denied based on mileage. I believe the vehicle’s failure is a direct result of Honda’s failure to address the recall in a timely manner and the dealership’s repeated misdiagnosis.

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.

The contact owns a 2018 Honda Accord. The contact stated that while driving at various speeds, the vehicle either hesitated or stalled with the "Emissions System Fault", "Engine Power Reduced", "See your Dealer" messages displayed. The contact then received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline), and the vehicle was taken to the dealer to be repaired under the recall. The vehicle was repaired, but the failure persisted. The vehicle was taken back to the dealer approximately six times after the recall repair. The spark plugs, ignition coils, and turbo charger were replaced after several visits; however, failure persisted. The vehicle was also taken to an independent mechanic, and the battery was replaced but the failure persisted. The vehicle was taken back to the dealer, and the contact was informed that the wiring harness and head gasket needed to be replaced. The manufacturer was notified of the failure and provided a case number, but offered no additional assistance. The vehicle remained with the dealer unrepaired. The failure mileage was approximately 40,000.

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.

The contact owns a 2018 Honda Accord. The contact stated that while starting the vehicle, the climate control feature was inoperable. In addition, the contact stated that after driving for approximately 5 miles, the engine overheated. A message to park the vehicle was displayed. The vehicle was taken to the dealer, where it was diagnosed with head gasket failure. The contact was informed that there was a coolant intrusion in cylinder #3. The contact was informed that the head gasket needed to be replaced. The vehicle was not repaired. The vehicle was undriveable. The manufacturer was not made aware of the failure. The failure mileage was approximately 106,483.