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 HYBRID
    - Ruskin, FL

    Same problem with this 2018 Hyundai Sonata Limited Hybrid engine as the already recalled 2017 Sonata’s with the same 4 liter/direct fuel injection engines. At approximately 69,000 miles the problems and check engine light analyzed was done by Auto Zone and Brandon Hyundai (3 times each and finding additional problems each time). I have documentation. P1326 Knock Sensor indicated engine failure problems P0302 Cylinder 2 misfire (occurred next day after repair of this part) U0293 Lost communication with HEV Powertrain control module ( not charging hybrid U1004 H-CAN C135B-08 no code explanation given C1612-08 CAN time-out TCM C1611-08 CAN time-out EPS ECM C1614-08 CAN time-out HCU C2229-08 Towed to dealer for repair. These problems occurred from 4/18/22 to 4/27/22 3 times in less than 2 weeks. car still in service dept today 4/30/22 with no resolution. Failures continued to escalate after each service. Went into “Limp Home Mode” twice. Very unsafe to drive. Stalled, jerked and speed reduced. This happened on I-75 twice and once on Hwy 674. Felt in danger each time (especially the last time on 4/27/22). Turned on caution lights and tried to safely pull over. Check engine light blinking and many other engine lights came on. Brandon Hyundai said engine may need to be replaced, but then they want apply “bandaid temporary fixes”: like replace Cylinders again and now Knock Sensor; instead of addressing safety issues of a failing engine. These engines are unsafe! They need to be recalled and replaced before they could causing major accidents due to engines poor performance as it’s failing. The jerking and stalling put me in danger prior to being able to restart the engine to get off the road. Are these a possible fire hazard as well? I’m scared to drive it, whenever I get it back from the dealers service department!

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

    The contact owns a 2018 Hyundai Sonata. The contact stated that while her daughter was reversing out of a parking space, the vehicle experienced unintended acceleration. The vehicle drove forward and crashed into a brick post. The contact's daughter did not sustain any injury but later received medical attention. There were no airbags deployed. A police report was filed. The vehicle was towed to a tow yard where the dealer later picked up the vehicle and took it to their location. The contact was unaware of what was repaired since the dealer did not provide a work order and she had to sign a power of attorney for the dealer to release the vehicle. The failure recurred with unintended acceleration up to 25 MPH, immediately after the brake pedal was released. The vehicle was not repaired. The insurance company did not deem the vehicle totaled. The manufacturer was not made aware of the failure. The failure mileage was approximately 41,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - Deerfield Beach, FL

    The contact owns a 2018 Hyundai Sonata. The contact stated that the trunk latch was previously replaced; however, the failure recurred. The contact received notification of NHTSA Campaign Number: 21V619000 (Latches/Locks/Linkages) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the failure and confirmed that parts were not yet available. The manufacturer was made aware of the failure and referred the contact to a dealer. The failure mileage was approximately 17,000. Parts distribution disconnect.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA HYBRID
    - Louisville, KY

    The contact owns a 2018 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, there were abnormal sounds coming from the vehicle. The malfunction lamp indicator warning light was illuminated. The vehicle was taken to the dealer and diagnosed with engine failure. The contact was informed that the engine needed to be replaced and that there was a Service Campaign Number: 966 (Engine Monitoring Logic) associated with the VIN that was unrepaired. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and requested the vehicle's service records. The failure mileage was approximately 75,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - Winthrop , MA

    The shark fin antenna assembly becomes dislodged from its base very easily and can fly off while driving or scraping ice off the roof with minimal force. Hyundai should do a better job attaching the outer shark fin plastic cover to its base.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - Tampa, FL

    The contact owns a 2018 Hyundai Sonata. The contact received notification of NHTSA Campaign Number: 21V619000 (Latches/Locks/Linkages) however, the part to do the recall repair was unavailable. The contact called the local dealer and left a voicemail. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified of the issue. The contact had not experienced a failure. Parts distribution disconnect.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - Coram, NY

    The contact owns a 2018 Hyundai Sonata. The contact stated while their vehicle was parked, starting the ignition, and attempted to make 3 point turn exiting out of their driveway, the vehicle accelerated on its own and went over their curb into their neighbor yard. The contact stated they depressed the brake pedal to stop the vehicle, however, the vehicle continued to accelerate at a slow speed before finally coming to a stop. The contact was able to reverse and exit out of their neighbor's yard and continue to drive to their destination, however, the failure intermittently occurred several times. The contact took the vehicle to a local dealer who inspected the vehicle but could not diagnose the cause of the failure. The contact went to another local dealership (Cars Unlimited Of Suffolk LLC 2096 NY-112, Medford, New York 11763 Phone: (631) 758-2200) but the dealer was not able to duplicate the failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 8,896 miles.

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

    In August 2021, my son went to open the front passenger door of his 2018 Hyundai Sonata. When opening the door, the handle came off in his hand. We reported the broken handle and asked if it was covered under the factory warranty. We were told by the local Hyundai Dealer that it was not. So we paid over $100.00 to have the handle replaced. Fast forward to January of 2022, I was packing my son's car for him to return to college and the back passenger door handle came off in my hand. That's two door handles in less than five months. There was no forced entry. No yanking or pulling above a normal opening the door process. My son is unable to access the passenger side of his car and has to crawl across the back seat. When the front passenger handle fell off, the passenger front seat was unusable. I have done research online and this seems to be a problem. Our car is not the first one to have this happen. I placed a claim with Hyundai Motor America and was guaranteed a call back within 3-5 business days. I have since placed four more calls in to the customer service line and have yet to hear from anyone regarding fixing this issues. It has been over two weeks. I have photographs to upload but the system will not allow the upload although they meet all criteria.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - CHARLES TOWN, WV

    THE OVERHEAD CONSOLE DOES NOT CLOSE. IT DOES IT ALL THE TIME. I KNOW THERE WAS A RECALL ON IT BUT NOT ON THE 2018 MODEL. IT IS A PROBLEM BECAUSE IT BLOCKS YOUR VIEW ON THE RIGHT SIDE THANK YOU

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - MINOOKA, IL

    The contact owns a 2018 Hyundai Sonata. The contact stated that after filling the engine with oil, approximately 2 months later it was discovered the engine oil level was extremely low. The contact indicated that the engine oil was being consumed at a very rapid pace. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 65,000. Consumer stated it was determined it was a valve cover gasket not pistons as a previous mechanic stated. So no need for recall.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE