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
    - Bardstown, KY

    Starter replaced at less than 50,000 miles. Normally a starter will last 150,000 miles or more. I was past the warranty by 9 months but was under the mileage. Warranty was 5 years or 50,000 miles. Hyundai parts are cheap and do not last long compared to other companies.

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

    I have had a new engine put in my Sonata back at the beginning of 2023. For the past two days my car will jerk really hard, and then loose power not accelerating over 25 rpms and my check engine lights comes on when it jerks really hard.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA HYBRID
    - ORANGE, CA

    I was driving on the freeway and my car lost all power. My indicator dash board flashed lights and a loud beeping sound. The warning lights flashed to check my hybrid system and turn engine off, HEV. My car immediately lost power and turned off. I was on the freeway, I almost got into an accident, cars were honking at me. My vehicle was towed by my insurance company. I receieved a phone call from the service advisor today, he informed me that I need an electical water pump and the cost quoted to me is $1908.00. When I complained to the advisor he told me that water pumps only last 3-5 years. I told him that my previous car was a 2013 Sonata and sold it with 100,000 miles and I never had water pump issues. My online research discovered that this has been a recurrent issue with 2018 Sonata's.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - Southampton, PA

    We were heading to Lakewood NJ from Bucks County (North of Philly) . Car trouble w/ hybrid system on Rt 1, just past I-95. Got off @ Fairless Hills & took back roads. We could only go 20-30 mph. IDK how many times I pulled over. Several lights on, including "Check hybrid system. Turn Engine off", engine light, low tire pressure, battery & 3 other unidentifiable lights. I turned around to try to make it home, as 2 years ago, I had a similar issue, which turned out to be the hybrid water pump failed. We finally stopped near a park & called AAA & towed to dealer. Prior to driving, we had no fluid on our driveway. My last synthetic oil change was April 19, 2023 @ 49,097mile. I now have about 57,000 miles. Today, dealer said no oil in the car & oil pan was all wet. They claim the oil filer was loose. Why would it take 8 months to loosen to lose oil? After adding oil & taking for test drive, they said the engine seized & would need to be replaced. Not under warranty. Add to complaint - the remaining dashboard lights where checked and non of them was for the oil pressure. If I lost enough oil for the engine to seize I would expect a low oil pressure light to come. The dealer informed me on Dec 26, 2023 that when doing the diagnostic, the oil pressure light came on for them. The photos attached to the case does not show the oil pressure light on.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - Virginia Beach , VA

    Oil pan crack. Leaking oil can get on engine or underbody components causing fire or failure of breaking systems causing an accident resulting in death. Problem was identified by dealer and in fact the dealer rep said this was common. It has not been inspected by police or insurance reps. There is no warning systems in place for a cracked pan.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - Hampton, VA

    The contact owns a 2018 Hyundai Sonata. The contact stated while driving approximately 35 MPH, the vehicle jerked and failed to accelerate as designed. The contact stated that the check engine warning light was illuminated. The contact drove the vehicle to the residence and then contacted the dealer. The vehicle was diagnosed but was not repaired due to the cost. The manufacturer was made aware of the failure. The failure mileage was approximately 83,920.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - Cleveland , TN

    The paint if pealing off in large sections due to a manufacturer defect in the primer. The flakes can fly onto the windshields of other vehicles causing collisions.

    Source: NHTSA WEB SITE
  • 2018 HYUNDAI SONATA
    - Greensburg, PA

    The contact owns a 2018 Hyundai Sonata. The contact stated that the vehicle failed to start in cold weather, below 50 degrees Fahrenheit. The contact stated that the vehicle would start as needed whenever the weather was warmer. The vehicle was taken to an independent mechanic, where it was diagnosed; however, the cause of the failure could not be determined. The dealer was notified of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 72,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2018 HYUNDAI SONATA
    - Mililani , HI

    I own a 2018 Hyundai Sonata SEL. I purchased the car in 2020 with ~17,000 miles on it. At ~50,000 miles the engine begin burning oil. It has progressively gotten worse. I can’t bring myself to have anyone drive my car because of this issue. It is all to likely that the result of the car burning so much oil in a short period of time. That it can pose a serious risk to anyone driving the car if the oil wasn’t checked. This is not a common problem with many cars, this is a problem with Hyundai vehicles. The negligence of not issuing a recall for this is horrible. I have taken my car to private mechanics and Hyundai service centers. The response I get is “oh yeah they’re know for burning oil and there’s not much to do about it.” That’s a ridiculous response to situation like this for the thousands of owners. How long will it take to issue a recall, until a life is taken? When the issue could have been fixed by issuing a recall. Complete negligence on Hyundai and the NHTSA.

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

    Purchased this vehicle with about 64K miles. Vehicle, as per CarFax report, has been meticulously maintained. Upon delivery, we changed the oil and filter with full-synthetic Amsoil. We ensured oil levels were appropriate prior to returning to service. No more than 1,000 miles later, roughly incurred in about a month, we checked oil levels again. This time, it required about 1.25 quarts to return it to the appropriate level .We did research and apparently, there is a class-action lawsuit filed by owners of Hyundai vehicles with this specific engine, the Theta II 2.4L 4-cylinder engine. Here's an article making reference to apparently your organization already looking into these complaints. [XXX] Could you please advise if the NHTSA will take the necessary steps to request Hyundai to issue a recall? I have found multiple articles where Hyundai is rejecting to take any action on their own, in most cases, advising their customers that such level of oil consumption is 'normal'. That clearly contradicts their own owner's manual guidelines. I own a 2001 Chevrolet Suburban 1500LT with 302K miles and the vehicle will go nearly 5K miles between oil changes while requiring no more than 1/2 quart of oil to keep it at the appropriate levels. I also own a 2019 Honda Accord 2.0T that normally requires oil changes every 10K miles and it seldom requires more than 1/8 of a quart to keep at the appropriate oil levels. There is definitely something definitely wrong with this engine type and requires governmental involvement to hold the manufacturer to provide adequate remediation. Thanks, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    Source: NHTSA WEB SITE