2018 Honda Accord electrical system problems
290 owner complaints filed with NHTSA name the electrical system on the 2018 Honda Accord — 15% of all complaints for this model year.
What owners report
“this is a known issue with honda. the head gasket is blown causing all the warning lights to come up on the dash. my car has not got hot, it goes up to the H but goes right back down to normal setting. i have had my local honda dealer look at my vehicle and that is what they told me was the issue…”
filed Sep 18, 2026
“1>Engine failure: Around the time vehicle reached 148,000 miles on it, it blew a head gasket on cylinder 2. Coolant was in the cylinders. The vehicle would not accelerate and was misfiring. 2> Safety was affected as this occured on interstate 40 and caused the vehicle to slow to an unsafe speed…”
filed Sep 11, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Tech Line Summary - Customers may report that the center display unit changes screens on its own, registers unintended inputs, or operates erratically without user interaction. The condition may be more noticeable when…
AATS31549 · Other · issued Aug 31, 2026Service Bulletin - On certain 2018-2022 Accord and 2018-22 Accord Hybrid vehicles equipped with the Wireless CarPlay and Android Auto software upgrade, a programming issue within the Wireless CarPlay and Android Auto…
A26-068 · Service Bulletin/Repair Instructions · issued Aug 21, 2026Dealer Message - Due to a software programming issue within the Wireless CarPlay and Android Auto system, an invalid "License Authentication Error" message may appear on the Display Audio screen after approximately…
AEBM08212026901 · Other · issued Aug 21, 2026
Electrical System problems in other Accord years
| Year | Reports | Share |
|---|---|---|
| 2025 Accord | 9 | 11% |
| 2024 Accord | 23 | 16% |
| 2023 Accord | 22 | 26% |
| 2022 Accord | 96 | 39% |
| 2021 Accord | 61 | 26% |
| 2020 Accord | 51 | 14% |
| 2019 Accord | 106 | 15% |
| 2017 Accord | 152 | 28% |
| 2016 Accord | 196 | 33% |
| 2015 Accord | 237 | 39% |
| 2014 Accord | 378 | 39% |
| 2013 Accord | 414 | 29% |
Other reported problem areas on the 2018 Honda Accord
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.