2018 HYUNDAI SONATA Complaints

The contact owned a 2018 Hyundai Sonata. The contact stated that while driving at 35 MPH, a pedestrian alerted him that the vehicle was on fire.  The contact noticed that the rear portion and driver side of the vehicle was on fire.  While traveling around a curve the brakes became inoperable the contact jumped out of the vehicle. he contact sustained injuries to his left shoulder and leg and medical attention was provided.  There were no warning lights illuminated. The vehicle continued to roll as it was burning.  The vehicle crashed into a dirt mound at the end of a hill. The fire department was on the scene to extinguish the fire. There were four gallons of fuel on the ground. The vehicle was towed to tow lot. There was no police report fire or air bag deployment. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The insurance company deemed the vehicle a total lost. The failure mileage was approximately 105, 000.

Had issues with engine consuming oil. Took to dealer who completed an engine oil consumption test to find the engine oil was 3 quarts low. All services had been completed through the dealer for the life of the vehicle. Engine replacement was approved. Vehicle was still under warranty. Vehicle was at 88227 miles when taken to dealer for repairs for oil consumption.

I was the owner of a 2018 Sonata until I was t-boned and the car was totaled. I started to make a left turn into a school parking lot when the engine kind of stalled or more like stuttered and did not go forward as usual. The oncoming car then struck me before I was completely in the driveway. My vehicle was totaled as was the other one. Fortunately no one was on the passenger's side where the other car hit me. However the seat belt did not engage which resulted in me slamming very hard into the steering column. This resulted in bruised on my right side which cleared up in several weeks, but, unfortunately, I received a heart contusion on my left side which is still causing shortness of breath. Hyundai will not acknowledge a problem with the engine or the seat belt.

Hello, I am the original owner for my 2018 Hyundai Sonata. I have now had numerous issues with this vehicle that has now left me stalled on the highway twice resulting in a near accident and the vehicle being towed twice to a dealership. I am now having issues with oil consumption with me needing to put in at least 1q per week to ensure the reading on the dipstick is above “L”. I have my vehicle serviced at the Hyundai dealership and they first brought to my attention at 90k miles that when I would go in for my scheduled oil changes the engine was nearly dry. I took my vehicle to a Midas to have it inspected for an oil leak with their mechanics twice saying there was not an oil leak. It was the mechanic here at Midas that informed me of the oil consumption issues Theta II Hyundai engines have been experiencing and to take it into the dealership to see what can be done. This has been an issue my dealership has known about, but they are refusing to assist stating the vehicle is now out of warranty at 104k miles. I have the receipts proving the vehicle has been maintained according to the manufacturers recommendation. My vehicle now will fill with the smell of burning oil when I’m driving, I’ve had the spark plugs replaced once and the new spark plugs are already coated in oil and my vehicle lurches when I’m accelerating to get onto the highway. I feel very unsafe driving this vehicle and fear it’s a matter of time before it leaves me stranded on the highway again.

The motor blew in my 2018 Hyundai sonata due to a manufacturing defect. There was a recall on it a couple of years ago. They acknowledged it was a defect which is why they put an extended warranty on the engine. Because I could not come up with maintenance records dating back until 2018 (I only had them dating back to 2020), they denied my motor and will not fix it. I bought the car brand new in 2018 and have had nothing but issues ever since. I have had to change the oil in this vehicle every 2 weeks, because it would be nothing in the oil tank at all. When the recall come out, they said they could not fix the vehicle until the motor was blown. Now that the motor has blew, they won't fix it because I don't have repair records dating back 6 years ago.

The contact owns a 2018 Hyundai Sonata. The contact stated while driving at approximately 70 MPH, the check engine warning illuminated. The contact stated that the vehicle was losing forward momentum. The contact depressed the accelerator pedal but the vehicle was still losing forward momentum and then stalled. The contact stated that he was able to coast to the side of the road. The contact attempted to restart the vehicle but was unable after several attempts. The vehicle was towed to a local dealer who diagnosed the vehicle and determined that the engine needed to be replaced due to a hole in the valve. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 120,000.

The contact owns a 2018 Hyundai Sonata. The contact stated that while attempting to start the vehicle, the vehicle failed to start. The contact stated that after several attempts, the vehicle eventually started. The failure had been persistent since December 2022. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The contact was requested to pay a diagnostic fee. The contact declined to pay the diagnostic fee because the vehicle was under warranty at the time. The contact purchased a new battery, and the battery was replaced; however, the failure reoccurred. In addition, the check engine warning light illuminated. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was unknown.

I had just taken my 2018 Hyundai Sonata through the brushless car wash at Marion Ford-Hyundai in Marion, Illinois. As I exited the car wash, I noticed that the engine light had come on. When I took the car out on the highway, it accelerated very slowly and would only reach a speed of about 50 miles per hour. I called the service department at the dealership about what had happened and they told me the knock sensor had shorted out and for safety to the engine, would only allow me to go about 50 miles per hour, and to drive it as little as possible until it was repaired. They said that they had several other Sonatas in the shop with the exact same problem. The car was, and still is, under warranty, so it was repaired for free. It took about a month for them to get to my car, due in part to the other Sonatas waiting for the same problem to be repaired. The second time it happened I was driving home and went through some water on the highway at about 55 miles per hour, and the engine light came on and the car instantly decelerated to about 45 miles per hour. Same problem. The dealer again repaired the car for free. My two biggest concerns are how much it's going to cost me to have the repair done after the car's warranty expires, and, more importantly, what if the problem occurs in fast city traffic, such as in Covington, KY, where you have to drive 80 mph to keep from being a traffic hazard, or some other similar situation, such as interstate highway travel. Rapid deceleration in fast traffic can be deadly, and I don't like the thought of being killed or stranded in the middle of nowhere due to a design flaw by Hyundai. Can't Hyundai be made to fix the problem at no cost to the vehicle owners, to make the cars safer? I hardly drive the car in the rain any more. By the way, I don't have the exact dates these incidents occurred, only that they were, the best I can remember, in 2022 and 2023.

The vehicle is disposing oil really fast every 3 weeks I put 2 quarts in. A whole lot of dark smoke comes out when the car is 1st cranked up. Oil light flases constantly off and on in like a second. You would miss it if you blink twice. At least it should stay on to warn you of that their is no oil in the vehicle. Check the oil stick, bone dry. No leaks, no cracks, I took it to the shop and the repairs is really a 1 new motor

The engine of my 2018 Hyundai Sonata has been losing oil at a significant rate. By the time I take my car in for a regular oil change the oil is either completely out or nearly out. I contacted Hyundai regarding an oil consumption test which is what was recommended to me by Hyundai corporate when I called to report the problem. Hyundai has completed the oil consumption test and although they stated that it is consuming oil at a higher than normal rate, it still meets their “standard” and the recommendation that they have was to fill up my oil every time I put gas in my car which is an unreasonable expectation . The safety risk is significant. Although Hyundai recognizes this is an issue, they have said that there is nothing they can do. For a vehicle that has only 79,000 miles on it, there is no indication of where the oil is leaking to. During my last oil change, valvoline stated that this is a known issue and that the oil leaks into the engine of the vehicle. Hyundai inspected the vehicle and again stated that although it is burning oil off at a higher than normal rate, their standards state that it is not burning off enough to warrant an engine repair. The oil warning light did appear just before my last oil change which was approximately January 2024. When the light came on, I immediately scheduled an oil change and that is when I was first made aware that this was a known issue with certain Hyundai models