Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
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 owned a 2018 Honda Accord. The contact stated while driving at an undisclosed speed, the collision mitigation braking system (CMBS), the Adaptive Cruise Control (ACC), the Lane Keeping Assist System (LKAS), and the Road Departure Mitigation (RDM) warning lights illuminated. The vehicle was taken to the dealer where the failure could not be duplicated. Additionally, the contact stated that upon parking and turning off the vehicle, the doors failed to unlock. The contact stated that he was unable to unlock the doors by pressing the door lock switch or the key fob. The contact stated that his wife and himself remained locked in the vehicle for 30-45 minutes while the inside vehicle temperature rose to approximately 115 degrees F. The contact notified his friend who pulled the driver's side door several times from the outside and the door opened. …
The contact owns a 2018 Honda Accord. The contact stated while driving at an undisclosed speed, the vehicle hesitated before accelerating. The accelerator pedal was depressed and went to the floorboard; however, the vehicle failed to accelerate above 25-30 MPH. The failure had become more frequent and the brake system, Brake Hold System Failure - See Dealer, electronic power system, power system refused, Adaptative Control System - See Dealer, vehicle stability, Reduced Traction, Handling and Hill Assis, and vehicle may roll messages were displayed. 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 local dealer was contacted. The dealer informed the contact about diagnostic testing. …
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 contact owns a 2018 Honda Accord. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated. The failure was intermittent. The failure had occurred while attempting to start the vehicle, while the vehicle was idling, and while the vehicle was being driven. The contact stated that the vehicle was taken to several independent mechanics, however the failure was not duplicated. The vehicle was taken to an alternate independent mechanic; however, the failure was not duplicated. The contact was informed that the failure might be a communication issue with the software. The dealer was made aware of the failure. The contact referenced an unknown recall; however, the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 135,000.
The contact owns a 2018 Honda Accord. The contact stated while driving 70 MPH, the vehicle stalled. The contact was able to park the vehicle on the side of the highway; additionally, the hazard lights failed to work. The vehicle was taken to the dealer, who informed the contact of a faulty START/STOP switch. The contact stated that while driving at an undisclosed speed, the vehicle sporadically applied the brakes independently. Additionally, the contact stated that while driving at an undisclosed speed, the vehicle lost motive power and the hazard lights failed to function. The vehicle was taken back to the dealer, where the contact was informed that the START/STOP switch needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 75,336.
The contact owns a 2018 Honda Accord. The contact stated that while the vehicle was parked and starting the vehicle, several unknown warning lights became illuminated on the instrument panel. The steering wheel failed to move, and the power steering warning light illuminated, and the steering wheel functionality became limited. In another occurrence, while driving at an undisclosed speed, the vehicle stalled, and it shut off, but was able to restart. The vehicle was taken to a dealer and diagnosed with an electrical failure, but the vehicle was not repaired. The vehicle was taken to an independent mechanic, where the battery was replaced, and the sensor box was cleaned; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 110,000.
The contact owns a 2018 Honda Accord. The contact stated that while driving at undisclosed speeds, the vehicle started jerking. The contact stated that the vehicle failed to move forward. There were several unknown warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed that a spark plug was cracked. The vehicle was repaired; however, the failure recurred. The vehicle was taken back to the dealer, where it was diagnosed that the head gasket was cracked. The vehicle was not repaired. The manufacturer was notified of the failure and opened a case, but no assistance was provided. The contact stated that the failure was related to NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). The failure mileage was approximately 112,000.
The contact owns a 2018 Honda Accord. The contact stated while driving approximately 35 MPH, the vehicle began to brake independently. The contact stated that the hill start assist failure, traction control, ACC, brakes, stability control, Collision mitigation, and other unknown warning lights were illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the EZ Pass sensor, the battery, and e-brake switch needed to be replaced. The battery was replaced. The vehicle was repaired. The contact stated that the failure recurred intermittently while driving at various speeds. The vehicle was taken to the dealer three times. The manufacturer had been informed of the failure. The failure mileage was approximately 29,000.
The contact owns a 2018 Honda Accord. The contact stated while starting the vehicle, the Adaptive Cruise Control (ACC), TPMS, anti-theft system, braking system, and traction control warning lights illuminated, and the messages "Collision Mitigation Braking System Problem. See Sealer", "Road Departure Mitigation. See Dealer" were displayed. The contact stated that the adaptive cruise control (ACC) mode, the Econ mode, and Sport mode were inoperable. The contact stated that she turned off and restarted the vehicle, and attempted to reset the vehicle herself; however, the failure persisted. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed nor repaired. The failure mileage was approximately 88,697.
The contact owns a 2018 Honda Accord. The contact stated that after starting the vehicle, several unknown warning lights were illuminated. The contact stated the turn signal lights, the trunk, the Lane Departure, Forward Collision Avoidance, and the LKAS failed to be displayed on the instrument panel. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 20V771000 (ELECTRICAL SYSTEM, BACK OVER PREVENTION, VISIBILITY/WIPER, VISIBILITY, EXTERIOR LIGHTING); however, the VIN was not included. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 133,000.
Electrical complaints in other Accord years
Frequently asked questions
How common are electrical problems on the 2018 Honda Accord?
NHTSA has 296 complaints about the electrical system of the 2018 Honda Accord, 16% of the model year's 1,892 complaints. The component named most often is ignition › coil › spark plugs (2 mentions).
Is there a recall for 2018 Honda Accord electrical problems?
No. NHTSA lists no electrical system 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 electrical problems start?
Half of the complaints with a recorded mileage happened before about 11,000 miles, and 65% before 25,000 miles.
Is it dangerous?
Owners linked 11 crashes, 2 fires and 6 injuries to electrical system 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.