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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)

51 of 598 complaints match · Electrical system · clear filters · page 3 of 3

Jul 11, 2018Electrical system

(4 COMPLAINTS, ALL POSSIBLY ELECTRICAL) 1) KEY NOT DETECTED IN VEH ERROR, WHILE DRIVING VEHICLE, I HAVE THE KEY NOT CONNECTED TO ANYTHING AND NO LONGER IN A POUCH, MY CAR BEEPS AND SAYS "KEY NOT DETECTED IN THE VEHICLE) THIS HAS HAPPENED WHILE DRIVING ON THE STREET AND FREEWAY. IT IS A RANDOM OCCURRENCE BUT HAPPENS ON A DAILY BASIS. 2) BLUETOOTH IS NOT CLEAR ON THE PERSON SPEAKING TO ME'S SIDE. OTHER PERSON STATES AS WELL AS HONDA TECH LINE STATES IT IS UNCLEAR, MUFFLED, AND LOUD INTERFERENCE WITH MY VOICE HAPPENS WHILE USING BLUTOOTH. 3) CAR PLAY: DUE TO BLUETOOTH ISSUE I STARTED ONLY TAKING CALLS WHILE USING CAR PLAY. ONCE I STARTED USING I STARTED HAVING THE ISSUE OF IT STATING RANDOMLY AFTER BEING SUCCESSFULLY CONNECTED"CAR PLAY NOT SUPPORTED" WHILE IN THE MIDDLE OF A CALL IT WILL DISCONNECT AND I WILL HAVE TO PULL OVER TO ATTEMPT TO RECONNECT. RIGHT AFTER CAR PLAY WILL CONNECT AGAIN AND WORK UNTIL IT RANDOMLY DISCONNECTS AGAIN SAYING CAR PLAY NOT SUPPORTED. NOTE: WITH CAR PLAY AND BLUETOOTH ISSUE I HAVE TAKEN CAR INTO DLR MULTIPLE TIMES STARTING WITH THE DAY AFTER THE VEH WAS PURCHASED IN 1/29/2018 NO RESOLUTION SO FAR TO DATE. DLR HAS REPLACED MICROPHONE, AND STILL NO RESOLUTION AS OF YET 4) DRIVER WINDOW MAKES WEIRD SOUND LIKE IT IS COMING OFF THE TRACK, TOOK INTO DLR AND THEY REPLACED THE MOTOR FOR THE WINDOW, THE WINDOW STILL HAS ISSUE. ** I HAVE MORE PHOTOS OF RECORDS FROM TAKING VEH INTO DLRSHIP. BUT THIS FORM ONLY ALLOWS ME TO UPLOAD 5

NHTSA ODI 11110782

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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 →