Three problems related to engine funny noise have been reported for the 2018 Honda Accord. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Honda Accord based on all problems reported for the 2018 Accord.
2018 Honda Accord hybrid touring - loud humming noise while cruising at 52mph. Read google and you'll find many others have similar issues but no known resolve. Have been repeatedly able to reproduce and it can be obnoxious at times but of course Honda denies any knowledge of the issue and claims they are unable to reproduce.
The vehicle makes a drone like humming noise. Dealer says they are unable to duplicate and I should report the problem to Honda. Noise happens intermittently when driving car at all speeds.
In colder weather, the vehicle makes a drone like humming noise, similar to running a wet finger around a wine glass except louder. If I open the window it stops, it also stops below 5 mph. It is very distracting, I almost went off the road trying to figure out where the noise is coming from. The dealer is telling me it's the speakers, but why would it stop when the window is open. I believe it's the active noise cancellation anc - once the vehicle warms up 15 - 20 minutes the noise stops. I feel this is a known safety hazard that Honda is trying to figure out. One dealership told me the "engineers are working on it, but no fix at this time". This is a brand new vehicle and it isn't stopping. Seems like Honda is hoping for warmer weather but that is not right. Please help.