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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)

5 of 598 complaints match · Brakes · crash/fire/injury only · clear filters

Sep 8, 2023BrakesCrash

The contact owns a 2018 Honda Civic. The contact stated while her boyfriend was driving approximately at 35 MPH and approaching another vehicle, he depressed the brake pedal, but the brake pedal became soft, and the vehicle failed to respond as needed. The vehicle crashed into the rear of the other occupied vehicle. There was no warning light illuminated. The air bags deployed. There were no injuries sustained. A police report was filed. The vehicle was towed to a tow lot. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed nor repaired. The failure mileage was approximately 71,000. The VIN was unavailable.

NHTSA ODI 11543417

Aug 24, 2023SteeringBrakesCrash

The contact owned a 2018 Honda Civic. The contact stated that while in a drive-through line with the brake applied, the vehicle unintendedly accelerated. The vehicle then drove over the curb, veered to the left, crashed into another vehicle, a sign, and went over four lanes of traffic. The contact was unable to control the vehicle but was able to push the ignition button to stop the vehicle. There were no reported injuries, or air bag deployments. A police report was filed. The vehicle was towed to a towing lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 35,000. The vehicle was towed by the insurance company and deemed a total loss.

NHTSA ODI 11540601

Mar 28, 2020SteeringElectronic Stability Control (esc)BrakesCrash

ON MARCH 27, 2020, I WAS DRIVING TO WORK WHEN MY CAR'S ABS LIGHTS, BRAKE SYSTEM LIGHTS, STABILITY CONTROL LIGHTS, AND ANOTHER LIGHT I DID NOT RECOGNIZE ALL LIT UP AT THE SAME TIME. MY CAR BEGAN TO SWERVE AND SUDDENLY MY CAR'S STEERING WHEEL AND FRONT WHEELS LOCKED UP. I LOST CONTROL OF THE CAR AND WASN'T ABLE TO CORRECT ANYTHING BECAUSE THE STEERING WHEEL AND FRONT WHEELS WERE BOTH LOCKED. I HIT A FARM FENCE WITH THE LEFT SIDE OF MY CAR, AND SLID ACROSS THE ROAD INTO A DITCH. MY AIRBAGS DID NOT DEPLOY DESPITE THE SUDDEN IMPACT TO THE DRIVER'S SIDE DOOR. THE CAR WHEELS WERE SO LOCKED UP THAT THE TOW TRUCK DRIVERS HAD DIFFICULTY LOADING THE CAR ON/OFF THE TOW TRUCK. THE EMERGENCY LIGHTS STAYED ON, EVEN WHEN THE CAR WAS TURNED OFF AND BACK ON. A WEEK PRIOR TO THIS, MY CAR TURNED ITSELF OFF WHILE I WAS DRIVING, BUT I WAS ABLE TO CORRECT THE PROBLEM BY TURNING THE IGNITION KEY OFF AND THEN BACK ON. I'VE ATTACHED A PICTURE OF MY DASHBOARD AFTER THE ACCIDENT TO SHOW WHAT EMERGENCY LIGHTS WERE LIT UP. MY INSURANCE COMPANY IS IN THE PROCESS OF INVESTIGATING THIS CLAIM, BUT I WANTED TO REPORT THIS IN CASE THIS IS A RECALL THAT NEEDS TO BE SENT OUT.

NHTSA ODI 11319613

May 20, 2019Parking BrakeBrakesCrash

*TL THE MANUFACTURER WAS CONTACTED. SEE ATTACHED DESCRIPTION OF THE INCIDENT. DISCRIPTION IS THAN 2000 CHARACTERS.*JB

NHTSA ODI 11208570

Mar 6, 2019Transmission & drivetrainBrakesCrash

2018 HONDA CIVIC PARKED ON AN INCLINE. AFTER EXITING THE VEHICLE AND GOING INSIDE HOME, SPONTANEOUSLY ROLLED DOWN HILL AND CRASHED INTO A TREE. THE VEHICLE WAS IN PARK AND DID NOT ROLL IMMEDIATELY. THIS HAPPEN SOMETIME AFTER ENTERING THE RESIDENCE. IN RESEARCHING ONLINE I HAVE FOUND THIS HAS OCCURED WITH SEVERAL OTHER OWNERS AND HAS BEEN REPORTED TO THE HONDA CORPORATION SINCE 2016. 2016-2018 HONDA CIVICS SEEM TO BE THE VEHICLE MODELS/YEARS AFFECTED.

NHTSA ODI 11184522

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 →