2018 HYUNDAI SONATA Complaints

When my car suddenly stopped on the highway, I encountered an issue with the “body control module.” The car wouldn’t start, and the key fob was ineffective. Additionally, the airbags stopped working. I don’t recall all the details, but I was unsure of where to report the dangerous vehicle. I’ve noticed several other Hyundai owners complaining about this issue, where their cars suddenly stop in the middle of nowhere.

The contact owns a 2018 Hyundai Sonata. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the engine had failed and needed to be replaced. The manufacturer was contacted and approved the engine replacement. The vehicle was repaired; however, the contact stated that the check engine warning light continued to flicker on the instrument panel. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the most recent failure The approximate failure mileage was 111,000.

My cars engine is failing. My safety as well as other around me are at risk because the more oil my engine consumes, the more it is likely to quite literally blow up. My car just hit 60,000 and my dealership has informed me that I need an engine replacement. The manufacturer will not take accountability for their fault engines, even though my dealership told me they see this same engine problem come in every single day. Since before my car hit 60,000 in October 2023, my oil light came on which is odd because I’ve always maintained my car well. Since then, my car has been burning 4-5 quarts of oil in 1000 miles. My engine has an oil consumption issue, as do many other Hyundai models but Hyundai refuses to acknowledge this issue. Go on Tik tok, look at how many people are having the same problem. Call a Hyundai service center, any one of your choice, they will tell you that they see oil consumption motor issues every day. Hyundai corporate told me it is not their problem, and good luck. This is unethical and immoral and there needs to be a recall. There is no reason why I need an engine replacement at 60,000 miles.

43000 miles on car. original owner. new battery. car does not cold start in the morning. all electronics light up, but engine doesn't start. This is a known issue from all the posts i found online, yet Hyundai has not issued a recall. I paid 300 for a battery 2 weeks ago and the issue didn't resolve. Now i am being told by dealer it is the starter and it's not covered because my 5 yr warranty is expired (my car is 6 years old). This is a known safety issue across the 2018 Sonata line. This should be a recall or bulletin, instead I have to come up with hundreds of dollars more to replace a starter on a car with ONLY 43,000 miles.

Approximately 6-8 weeks ago, I was driving home and my oil light began turning on and off. This had never happened before. It was nighttime and I was only a few miles from home so I continued driving. The next morning, I checked the oil to find that the reservoir was bone dry. There had been no warning light whatsoever prior to this incident. At this point, the vehicle had about 65,000 miles on it. I had to put 2 quarts of oil in before it would even register on the dipstick so I could get it to my mechanic. Upon arriving to his business, he explained that Hyundai is well aware of this ongoing issue of oil consumption but they are doing nothing about it. I had not driven excessive miles without an oil change and faithfully get it changed between 3,000-5,000 miles, which is perfectly acceptable for this vehicle. I have all receipts from these changes. I have begun to maintain a record indicating the oil that I have added over the last 1,700 miles. It has been 2.5 quarts. The morning I brought the car to my mechanic I reached out to the Hyundai dealership and was told I would need to pay for a diagnostic, then two oil consumption tests. I declined and promptly reached out to Hyundai corporate. They told me the same nonsense and then offered to have their consumer division reach out to me. Ultimately, that person told me I would need to do the same thing, so they were entirely useless in facilitating any reasonable resolution. I subsequently found out about the oil consumption problem that thousands of people have reported in various models and years. I joined a few Hyundai oil consumption groups on Facebook and now realize how many people have been impacted by this issue. I still owe $5,600 on the car but feel that the issue will not be handled by Hyundai and don't wish to have ongoing concerns with driving the car and constantly topping it off with oil. As a result, I feel that I am forced to pay off this car and buy something else.

Car is having a misfire in cylinder 4 . Carbon is being built up in my spark plugs and causing gas build up in the spark plugs . Engine burning oil fast.

The contact owns a 2018 Hyundai Sonata. The contact stated that while driving at 55 MPH, the vehicle suddenly lost motive power and was unable to accelerate above 60 MPH. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the knock sensor. The vehicle was repaired, but the failure reoccurred. The contact stated that later while driving at an undisclosed speed, the vehicle inadvertently lost all motive power. The contact was able to coast to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed back to the dealer, who diagnosed a failure with the connecting rod bearings. The contact was informed that metal was observed within the engine and that the engine would need to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V727000 (Engine), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA hotline for assistance. The failure mileage was 67,000.

The contact owns a 2018 Hyundai Sonata. The contact stated while driving 70 MPH, the check engine warning light illuminated, and the vehicle lost motive power. The vehicle was taken to the dealer where the dealer performed a compression check. The failure reoccurred. The vehicle was taken back to the dealer and the contact was advised to drive the vehicle until it blew up. In addition, the contact stated that all four seat belts had failed to function as intended. The contact stated that the front driver's side and passenger's side seat belts failed to retract as intended. The contact stated that the seat belts failed to secure the passengers in place. Additionally, the contact stated that the rear seat belts completely failed to retract as needed. The vehicle was not diagnosed or repaired by the independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to take the vehicle to the dealer for a combustion check and an oil consumption test to be performed out-of-pocket expense. The failure mileage was approximately 100,000.

My car is part of a campaign due to rod-bearing failure where the engine experiences problems such as complete failure, vibrating, hesitating, engine light on, and oil light on. I've been communicating with Hyundai who is not helping me with this issue. I was advised by them to continue driving the car "until the engine seizes", or I hear "a loud knocking noise". Upon inspection, three local Hyundai employees "agreed 100%" I need a new engine. However, per these employees Hyundai Corporate will not approve the replacement even though the vehicle is constantly experiencing the above symptoms above, simply because there is not a "loud knocking noise" coming from the engine. Even though ALL the other issues are present. This is very unsafe. I have a minor child I take to school daily, for an advisor to advise to drive the vehicle until "the engine seizes" is extremely dangerous, especially when they are aware my VIN is associated with engine replacement. My car exhibits symptoms of a rod-bearing failure and this multi-billion dollar company is taking advantage of hard-working urban mothers, by turning a blind eye and trying to require me to pay thousands of dollars up front for a problem THEY created by selling a vehicle with faulty engine. Again, the technicians indicated i in fact do need the engine replaced, but that Hyundai Corporate will require me to pay for a diagnostic test, rod-bearing test, and engine compression test because Corporate does not take their word for it. The fact a auto manufacturer is advising people to drive in such an unsafe manner is disheartening. If my child and I get injured in an accident by following their advice, our blood will be on their hands!

The electrical and engines in these cars are horrible . The steering wheel keeps locking up while driving cause everything to flick inside the car . This is a major safety issue for me when I am driving and I am unable to control the steering wheel. Dealership claimed they don’t see the issue with the car which I am stating . The vehicle was only inspected by a mechanic and since Hyundai said they couldn’t find anything a 3rd party confirmed that this was a ongoing issue and dealership could’ve caught it but it’s cheaper the sell the car . No everything happens at once especially if I’m turning or driving under 40 mph. First appeared 15 days after I bought the vehicle I alerted the dealership immediately