NHTSA Complaint #11698638 — 2018 HONDA ACCORD

POWER TRAIN issue reported to NHTSA

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Complaint Details

ODI Number	11698638
Vehicle	2018 HONDA ACCORD
Component	POWER TRAIN
Date of Incident	November 2, 2025
Date Filed	November 10, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	CO

Consumer Description

The head gasket leaked and a piston warped. The symptom was feeling a piston misfire and then the car wouldn't go over 10 miles per hour. Our safety was compromised because we were on a busy (45mph) road and couldn't turn off quickly nor go fast to keep up with traffic. The problem has been reproduced at an independent service center. The vehicle has only been inspected by the mechanic. The previous week all the electrical systems reported a failure. That was repaired by replacing some hose that collapsed on itself. During the misfire, the check engine light flashed, but it didn't before or after (when we were driving very slowly).

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