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What 598 owners told NHTSA about the 2018 Honda Civic Si

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (598)Crash / fire / injury (36)Steering (224)Fuel system (159)Electrical system (51)Engine (50)Brakes (21)Airbags (20)Body & structure (19)Transmission & drivetrain (14)Visibility & wipers (13)Driver assistance (8)

4 of 598 complaints match · Electrical system · crash/fire/injury only · clear filters

Feb 28, 2024Electrical system1 injury

The contact is an attorney who represented the owner of a 2018 Honda Civic. The contact stated that the client had taken pain medication and fell asleep in the driver's seat with the seat heater activated. The client slept for approximately seven hours and sustained severe burns the his lumbar region. The client was later admitted to the local hospital and treated for third-degree burns. The contact was concerned that the seat heater may have failed and became too hot causing injuries to the client. The vehicle was not yet examined. The manufacturer and local dealer were not contacted. The failure mileage was unknown.

NHTSA ODI 11574489

Dec 19, 2022SteeringElectrical systemCrash

The contact owns a 2018 Honda Civic. The contact stated that when attempting to make a right turn at approximately 25 -30 mph, the vehicle failed to successfully turn right. The vehicle continued in a forward motion until it crashed into a nearby sign. The air bag did not deploy. There were no injuries. Medical attention was received and confirmed that no injuries occurred. The sign was damaged. There was no police report. The vehicle was towed to the dealer who diagnosed that there was an electrical failure. The vehicle had been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 51,128.

NHTSA ODI 11498088

Jul 11, 2019Electrical systemAirbagsCrash1 injury

AIRBAG DID NOT DEPLOY

NHTSA ODI 11230917

May 19, 2019Electrical systemFire

ELECTRICAL FIRE WITHIN THE DRIVER DOOR. A FIRE STARTED WHILE VEHICLE WAS PARKED OUTSIDE AND OFF AT MALL IN TOLEDO, OHIO. WEATHER HAD BEEN RAINY. CAME OUT TO VEHICLE AND THE INSIDE WAS FILLED WITH SMOKE. AFTER FIRE DEPARTMENT AND TOWING AGENCY MANAGED TO GET THE PASSENGER DOOR OPEN TO GET INSIDE, IT WAS REVEALED THAT THE DRIVE DOOR HAD BEEN ON FIRE AND MELTED. THE FIRE HAD ALSO DESTROYED THE HEADLINER, DRIVE SEAT AND LEFT THE SMOKE DAMAGED INTERIOR COVERED IN SOOT. THERE WAS ALSO A HOLE IN THE DRIVER FLOOR, REVEALING POSSIBLE FRAME DAMAGE. HONDA SAYS THAT THEY ARE INVESTIGATING TO SEE WHICH COMPONENT CAUSED THE FIRE. DURING A PREVIOUS OIL CHANGE IN FEBRUARY, I HAD MENTIONED TO THE MECHANICS THAT THE CAR HAD BEEN BEEPING RAPIDLY WHILE IT WAS OFF AND THE KEY FOB WAS OUTSIDE THE VEHICLE. IT IS ONLY SUPPOSED TO DO THIS IF THE VEHICLE IS STILL RUNNING. I WAS TOLD THAT THIS WAS NORMAL WHEN THE WEATHER WAS COLD, BUT IT ALSO HAPPENED WHEN IT WAS WARM OUTSIDE, AND BECOMING MORE FREQUENTLY AS TIME WENT ON. THIS CONCERN WAS BRUSHED OFF BY BROWN HONDA, WHO ALSO REFUSED TO PROVIDE A LOANER VEHICLE WHILE HONDA WAS INVESTIGATING THE ISSUE. HONDA CORPORATE SAID THAT THE BEEPING SHOULD NOT BE HAPPENING IF THE CAR IS OFF. I AM CURRENTLY WAITING ON HONDA FOR ADDITIONAL INFORMATION.

NHTSA ODI 11208525

Working with the data? Download all 598 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 Honda Civic Si verdict →