Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2018 Honda Accord owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2018 Honda Accord. The contact stated while driving 65 MPH, the vehicle lost power and became inoperable. The contact pulled over to the side of the road for one to two minutes and returned independently. The contact stated that during the second failure, while depressing the accelerator pedal the vehicle failed to respond and slowed down independently and the vehicle lost power for the second time. The contact stated that during the third failure, the vehicle lost power, and the contact pulled over to the side of the road the vehicle became inoperable for fifteen minutes and returned independently. The vehicle was taken to the dealer; however, the dealer found no failure with the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. …
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 contact owns a 2018 Honda Accord. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted, and the vehicle was diagnosed, and it was determined that the failure was partly related to the recall. The dealer performed a seat belt repair however, the contact was informed that the recall repair could not be performed until late August 2024. The contact had to turn on the emergency lights for the vehicle to function properly; however, the vehicle would hesitate and jerk while starting or accelerating. The contact stated that while driving without the lights activated, after driving for a short time, the emergency lights would illuminate. …
The contact owns a 2018 Honda Accord. The contact stated that 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 stalled. The contact stated that several warning lights were illuminated. In addition, the contact stated that all the warning lights turned off, however the check engine warning light remained illuminated. The contact stated that the failure had occurred while the contact's children were inside the vehicle. The vehicle was taken to an independent mechanic, where it was unofficially diagnosed with fuel pump failure. The contact was advised to contact the dealer because there was a recall for the fuel pump. The dealer was made aware of the failure; however, the contact was informed of a diagnostic fee to perform a diagnostic test. …
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 owns a 2018 Honda Accord. The contact stated while driving 60-65 MPH, the vehicle lost motive power. The check engine warning light and other unknown warning lights were illuminated. The contact was able to veer to the side of the roadway. The contact restarted the vehicle and drove to the residence. Additionally, the contact stated that while starting the vehicle, the vehicle was running rough and was shuddering, and the RPM failed to exceed 2,000 RPM while driving. The contact stated that the failure had been recurring. The vehicle was taken to the dealer, where the fuel injectors were replaced; however, the failure recurred. The vehicle was taken to an independent mechanic, where it was diagnosed that the fuel pump had malfunctioned. …
Blown Head Gasket after taking my car in to Honda cars of Rock Hill SC, I had no issues, only took it to have the Fuel injector recall done, they did a diagnostic nothing came up, they did the fuel injector recall repair, and they asked if they could do the oil change i told them yes, a week later, my car lost power on interstate 77N in rock hill south carolina. I was going about 70 mph and it dropped from 70 to 20 mph in a matter of seconds, i had little time to get out the lane, i could have been killed or killed someone else i was terrified. Every known light on my 2018 honda accord came on, I have a video of the lights on my dashboard. I had it towed back to honda cars of rock hill on 5/30/2025 and was told I had a blown head gasket...I asked them how, they just put a fuel injector and nothing else was wrong with my car. …
As I was driving myself and child on the interstate 65 mph the vehicle all of a sudden dropped speed and would not accelerate. I drifted the car off the interstate off ramp and pulled into a store parking lot. Luckily, we did not cause an accident or hit anything or anyone. All the lights on car's dashboard blinking some examples are EPS, VSA, Malfunction lamp, Breaking system, check engine light, etc. My car did not show that it was running hot, was not smoking, however would not accelerate. The car had a slight rattle, running bad, shaking slightly; all in all, not working appropriately. No earlier indication that something was wrong just came all of a sudden, no warning at all. Car was brought to Billy Navarre in Lake Charles, LA, where they concluded that head gasket was blown. I had to come out of pocket to fix the head gasket and all of the other problems that it caused. …
The contact owns a 2018 Honda Accord. The contact stated that the vehicle was idling rough when started. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was made aware of misfires in cylinders #1 and #4. The contact was informed that the coil packs needed to be replaced. The vehicle was repaired; however, the failure persisted. The contact stated that on another occasion while driving 65 MPH on Interstate 75, the vehicle lost power. Several unknown warning lights were illuminated. The contact merged to the side of the road to exit the interstate. The vehicle was then taken to a dealer and was diagnosed with misfires in cylinders #1 and #4, and the coil packs needed to be replaced. The dealer notified the contact of the recall for the fuel pump, and the vehicle was repaired for the most recent failure, and the recall repair was performed. …
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 20 MPH. The contact stated that several unknown warning lights were illuminated. In addition, the contact stated that the following day, the vehicle was started, and a rattling sound came from the engine compartment. The contact stated that the vehicle had been taken to the dealer twice due to the failure; however, the contact was informed that the parts were not available to repair the vehicle. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. …
Engine complaints in other Accord years
Frequently asked questions
How common are engine problems on the 2018 Honda Accord?
NHTSA has 584 complaints about the engine & cooling of the 2018 Honda Accord, 31% of the model year's 1,892 complaints. The component named most often is engine › gasoline › turbo/supercharger (3 mentions).
Is there a recall for 2018 Honda Accord engine problems?
No. NHTSA lists no engine & cooling recall for the 2018 Honda Accord, though it has 6 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2018 Honda Accord engine problems start?
Half of the complaints with a recorded mileage happened before about 73,000 miles, and 26% before 25,000 miles.
Is it dangerous?
Owners linked 7 crashes, 3 fires and 1 injury to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.