2018 HYUNDAI SONATA Complaints

View complaints related to 2018 HYUNDAI SONATA. The complaints found here are submitted by actual consumers with first hand experience. There are more than 370 complaints submitted for the 2018 HYUNDAI SONATA. You can submit your own complaint to the NHTSA or call the Hotline, Monday-Friday 8am to 8pm at (888) 327-4236, TTY: (800) 424-9153.

  • 2018 HYUNDAI SONATA
    - CENTRALIA, WA

    TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHEN THE VEHICLE WAS STARTED, IT SPUTTERED AND FAILED TO ACCELERATE OVER 30 MPH. ALSO, THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TOWED TO TITUS-WILL HYUNDAI (255 CARRIAGE LOOP SW, OLYMPIA, WA 98502, (888) 287-9396) WHERE IT WAS DIAGNOSED THAT THE ENGINE AND WIRING HARNESS NEEDED TO BE REPLACED; HOWEVER, THE PARTS WERE ON BACKORDER. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 15586896. NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 22,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - WEST DES MOINES, IA

    I TOOK THE CAR FOR HIS FIRST OIL CHANGE AND THEY APPLIED A RECALL "SOFTWARE UPDATE" RIGHT AFTER GOING OUT DRIVING IN THE HIGHWAY THE ENGINE STARTED STALLING NOT GOING MORE THAT 22MPH, CHECK ENGINE ON AND PROBLEM IN SCREEN SAYING TO RETURN TO DEALER. I DID RIGHT AFTER AND THEY SAID IT WAS THE ENGINE WIRING HARNESS.. THEY GAME ME A RENTAL CAR BECAUSE THE HARNESS IS NOT IN "STOCK" SO LETS SEE HOW LONG IT TAKES..I JUST NOTICED THERE IS A LOT OF THE SAME PROBLEM REPORTED TO THIS CAR WITH THE SAME PROBLEM. 4221 MILES BRAND NEW SEL+ MODEL...

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - LAWRENCEBURG, IN

    JANUARY 2019, VEHICLE TO DEALER FOR RECALL FOR ENGINE FAILURE. MARCH 2019, WENT TO START VEHICLE. FLASHING ENGINE LIGHT. COULD NOT GET ABOVE 2000 RPM. DEALER ADVISED TO TOW VEHICLE. DEALER ADVISED CAR IS IN LIMP MODE. DEALER ADVISED POSSIBLE ENGINE REPLACEMENT. TWO WEEKS LATER, CAR IS STILL NOT REPAIRED. NOW THEY ARE POSSIBLY REPLACING 'HARNESS'. ADVISED THAT THEY WOULD HAVE VEHICLE ANOTHER TWO WEEKS.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - JASPER, GA

    TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. THE CONTACT STATED THAT THE CHECK ENGINE WARNING INDICATOR ILLUMINATED SHORTLY AFTER THE VEHICLE WAS PURCHASED ON MARCH 5, 2019. HYUNDAI OF KENNESAW (2878 BARRETT LAKES BLVD, KENNESAW, GA 30144, (678) 809-6990) DIAGNOSED THAT THE KNOCK SENSOR HARNESS NEEDED TO BE REPLACED. THE VEHICLE WAS STILL AT THE DEALER RECEIVING FURTHER TESTING. THE MANUFACTURER HAD NOT ISSUED A RECALL FOR THE 2015-2018 MODELS, EXCLUDING THEM FROM NHTSA CAMPAIGN NUMBER: 17V226000 (ENGINE AND ENGINE COOLING). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 5,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - GEORGETOWN, IN

    I HAVE A 2018 HYUNDAI SONATA. I BOUGHT IT ON 12/26/2018. I NOW HAVE 4,000 MILES ON IT. LAST MONTH THE DEALERSHIP PERFORMED THE COMPUTER SOFTWARE UPGRADE. TODAY I GOT A MESSAGE: A POSSIBLE CONDITION WITH YOUR ENGINE CONTROL SYSTEM HAS BEEN DETECTED WITH YOUR 2018 SONATA [XXX] ON 03/30/2019 AT 04:24 PM EST. A FULL SYSTEM CHECK IS RECOMMENDED TO BE DONE WHEN CONVENIENT. THE CAR FEELS LIKE IT IS GOING TO DIE. IS THIS A COMMON PROBLEM? UPDATE 04/01/2019 WELL I JUST GOT BACK IN FROM TAKING MY 2018 HYUNDAI SONATA TO THE DEALERSHIP. THEY INFORMED ME AFTER RUNNING SOME TEST THEY WERE GOING TO HAVE TO REPLACE THE WIRING HARNESS. THAT'LL TAKE ABOUT A WEEK BEFORE THEY GET IT. IN THE MEAN TIME THEY GAVE ME A RENTAL FROM ENTERPRISE WHICH WAS A 2018 HYUNDAI ELANTRA . 'INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TT

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - ELM GROVE, WI

    TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE HAD TO BE JUMPSTARTED IN ORDER TO OPERATE. THE VEHICLE WAS TAKEN TO BOUCHER HYUNDAI OF WAUKESHA (1583 E MORELAND BLVD, WAUKESHA, WI 53186) WHERE IT WAS DIAGNOSED THAT THE WIRING HARNESS ON THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 4,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - LOCUST, NC

    MY 2018 SONATA WENT TO THE DEALER FOR THE CHAMPAIGN 953 SOFTWARE UPDATE, FOR ENGINE KNOCK SENSOR ENHANCEMENT . AFTER THE UPDATE WAS COMPLETED THE CAR IMMEDIATELY WENT INTO TO PROTECTION MODE CAUSING THE CAR NOT TO ACCELERATE WHEN PULLING OUT OF THE DEALER ONTO A 4 LANE HIGHWAY, NEARLY CAUSING 4 PEOPLE TO INJURED. I HAVE BEEN TOLD BY THE DEALER AND BY HYUNDAI THAT THEY HAVE NEVER HEARD OF THIS HAPPING BEFORE, BUT THERE ARE NUMEROUS COMPLAINTS ABOUT THIS SAME INSTANCE HAPPING TO PEOPLE ON COMPLAINT SIGHTS. HYUNDAI NEEDS TO MALE IT MANDATORY THAT THESE CARS GET TEST DRIVEN AFTER THE UPDATES BEFORE TURNING THE CARS BACK OVER TO THE OWNERS. IT HAS NOW BEEN 3 WEEKS SINCE OUR SONATA WENT IN FOR THE 953 UPDATE, WE STILL HAVE NOT RECEIVED OUR CAR BACK, THE DEALER STATES THEY ARE WAITING ON A WIRING HARNESS TO COME IN. SO THEY ARE PERFORMING A SOFTWARE UPDATE TO DETECT ENGINE NOISE RELATED TO THE KNOCK SENSOR, BECAUSE METAL DEBRIS ARE COMING OFF THE INTERNAL MOTOR PARTS CAUSING FAILURE AND FIRES, THAT CAUSES THE CAR TO GO INTO PROTECTION MODE. WHEN A CAR IMMEDIATELY GOES INTO PROTECTION MODE AFTER THE 953 UPDATE IS DONE, THEY SAY ITS A BAD WIRING HARNESS PICKING UP TO MUCH NOISE. ISNT THAT A SIGH OF ENGINE WEAR THAT THEY WANT TO COVER UP WITH REPLACING A HARNESS THAT WILL NOT DETECT THE NOISE. IT DOES NOT TAKE A ENGINEER TO SEE T.HAT THIS IS A MAJOR COVER UP

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - CANTON, GA

    I HAVE BEEN NOTIFIED MY WIFE'S CAR NEEDS THE HYUNDAI SERVICE CAMPAIGN NUMBER 953 PERFORMED ON HER CAR. SEE BELOW LINK. HTTPS://AUTOSERVICE.HYUNDAIUSA.COM/CAMPAIGN953/MICROSITETEMPLATE/MICROSITETEMPLATEVINVALIDATE/3402 MY CONCERN IS IF THIS SOFTWARE UPDATE IS PERFORMED ON HER CAR WHAT WILL HAPPEN WHEN THIS CAR GOES INTO THE SAFETY MODE? IF THIS CAR SLOWS DOWN AND REDUCES POWER WITH NO WARNING WHAT MAY HAPPEN? WHAT IF MY WIFE IS PULLING OUT IN TRAFFIC AND THE CAR GOES INTO THE ENGINE SAFETY MODE WITH ONCOMING TRAFFIC? I FEAR ONCE THE CAR GOES INTO THE SAFETY MODE WITH REDUCE POWER AND NO ADEQUATE WARNING SHE ME BE HIT BY ANOTHER VEHICLE. WHAT MEASURES HAS HYUNDAI TAKEN TO ENSURE A DRIVER HAS ADEQUATE WARNING OF THE VEHICLE GOING INTO SAFE MODE SO THEY CAN GET OUT OF HARMS WAY OF THE FLOW OF TRAFFIC TO ENSURE THEY WILL NOT BE HIT BEFORE THE VEHICLE GOES INTO SAFE MODE AND REDUCES POWER? ALL I AM TRYING TO DO IS PREVENT A POTENTIAL ACCIDENT WHEN THIS CAR GOES INTO SAFE MODE.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - BAYTOWN, TX

    I WAS ONE OF THE FIRST PEOPLE TO DRIVE OFF WITH THIS 2018 SONATA 2.0T TRIM IN ENDING OF 2017. FAST FOWARD TO NOW, I HAVE BEEN HAVING ELECTRICAL, LIGHTING AND ENGINE PROBLEMS. WHEN DRIVING AT NIGHT, IT IS HARD TO SEE WHAT'S 30 FEET FROM YOU ON THE GROUND BECAUSE THERE'S SOME PARTS THAT THE LIGHT DOESN'T ILLUMINATE VERY WELL. WHEN I HAVE MY CAR'S INTERIOR LIGHTS ON AUTO MEANING TO TURN ON, WHENEVER I OPEN THE DRIVER'S DOOR, IT DOESN'T TURN ON. SOMETIMES MY HEADLAMPS WON'T TURN ON NEITHER, WHEN I PRESS THE UNLOCK BUTTON FROM MY KEYS. COUPLE OF MONTHS BACK AND STILL IS HAPPENING TO THIS DAY MY CARS ENGINE WILL START UP FUNNY OR START UP A COUPLE OF SECONDS LATE AFTER PUSHING THE START BUTTON. IT EVEN HAPPENS WHEN I LET MY CAR SIT FOR A DAY WITHOUT DRIVING. I'VE BEEN TO THE DEALER NOW AND TOLD THEM ABOUT THE ISSUE WITH THE INTERIOR LIGHTS AND I AM WAITING ON THEM TO GET ME SOME NEW LIGHTS FOR THE INTERIOR (PRETTY SURE THAT'S NOT THE PROBLEM). I KNOW NOW THAT IT'S SOMETHING ELECTRICAL SEEING ALL THESE COMMENT/ISSUES LEFT ON HERE. I PAID TOO MUCH TO HAVE THIS HAPPENING TO MY CAR. MAYBE I SHOULD OF JUST STUCK WITH JAPANESE SMH. HELP PLEASE.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - CLAYTON, NC

    TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHILE DRIVING APPROXIMATELY 55 MPH, THE VEHICLE SHUT OFF WITHOUT WARNING. THE VEHICLE RESTARTED ITSELF AND WOULD NOT EXCEED 20 MPH. THE VEHICLE WAS DRIVEN TO THE CONTACT'S RESIDENCE AND LATER TOWED TO JOHNSON HYUNDAI OF CARY (919-439-2059, LOCATED AT 5000 OLD RALEIGH RD, CARY, NC 27511) WHERE IT WAS DIAGNOSED THAT THERE WAS A KNOCKING SOUND IN THE ENGINE AND THE ENGINE MAY NEED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND ORDERED THE DEALER TO PERFORM MORE DIAGNOSTIC TESTS. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 22,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE