NHTSA Complaint #11458677 — 2018 HONDA CIVIC

The contact owns a 2018 Honda Civic. The contact stated while driving approximately 20 MPH, several unknown warning lights illuminated and the vehicle started to idle very rough. The contact had taken the vehicle to a local dealer however, the vehicle was not diagnosed. The contact drove the vehicle to an independent mechanic who diagnosed that there was an engine cylinder misfire failure with DTC codes: P0302 and P0303. Additionally, the contact stated that there was a strong smell of gasoline in the cabin of the vehicle. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 80,000. Fuel injectors were replaced by owner April 10, 2022. Upon oil change the same day, oil was very dark, despite only having 600 miles use since last changed and there was fuel noted in oil. Pictures were sent to NHTSA. Since changing injectors fuel mileage has improved greatly. The car has gone from averaging 37MPG to around 41MPG. Oil changed on 6/27/22, coloration was normal for routing change and did not note fuel in oil. No warning lights or issues with operation since injectors changed. The P0302 & P0303 codes were to be covered as part of a service bulletin relating to oil dilution but both Honda corp & dealership stated that injectors were not covered as part of the service bulletin. Even though the injectors could be directly responsible for the oil dilution issue if not properly functioning and throwing codes associated with the bulletin. Owner incurred the expense of rental car for a week, two lost days of onsite work with employer, and cost to purchase injectors. Will provide receipts.