2018 HYUNDAI SANTA FE SPORT Complaints

I’ve got a 2018 Hyundai Santa Fe Sport with a Theta II engine that’s failing—burning oil way too fast, coolant mixing in the cylinders, and throwing a P0304 misfire code. It’s been undrivable since late April 2025, and I’m worried about safety because the misfire and engine failure risk could cause it to stall on the highway, putting me and others in danger. It shakes when I try to drive, which feels unsafe. A Hyundai dealer confirmed the issue, finding coolant in the cylinders and the misfire, with no visible oil leak. Oil change receipts show the oil disappearing over a few weeks. The manufacturer reviewed my case but denied the warranty claim, saying it’s not covered since I’m a second owner and it’s not a rod bearing issue, even though the 2021 Theta II settlement should apply to this. The seller didn’t disclose the engine’s defect history when I bought it in 2023. The check engine light came on in early April 2025 with the misfire code, and I noticed the oil issue then. It’ll be out of service over 30 days by mid May 2025, so I’m taking legal action.

Back up camara is shorting out due to the location it is getting wet and corroding. Without the camara it can be a safety Hazzard. In doing research this seems to be a common problem due to the location of the camara. Poor design and could cause an accident. Failed after only 69k miles.

Vehicle has an excessive oil intake and it is constantly blowing out the spark plugs and coil packs causing poor performance on the vehicle overall. My vehicle's VIN number was listed as a qualifier in a class action lawsuit, but the manufacturer says it is not making the noise it needs to make in order to have it checked. Was also informed I need to pull out my spark plugs and clean them regularly because of the oil buildup. This problem has caused other problems with the performance of the car the excessive oil intake has caused countless problems terrible performance of the vehicle and is attributing to other poor performance issues. This has been an ongoing problem and have only recently been told by the dealership of this instance. Even though my vehicle is one of the ones in the extended recall because it's not making the noise they like they won't do anything about it. This vehicle is still being financed and I am refusing to pay for anything until the matter is resolved. I have a case filed with the dealership I am speaking to an attorney Monday I am processing an email to my state's attorney of Missouri and have completed the better Business bureau complaints. After phone calls service dates and emails I feel that Hyundai is not doing anything to resolve this situation whatsoever and could use any assistance from you possible.

1. Abs module stopped working. Car no longer has abs. Will not cover under warranty due to computer component. 2. Engine burns oil. 3 quarts in 1k miles. Combustion cleaning done. Now Engine light is one, oil light comes on, car smells of gas & oil.

My vehicle is burning through oil. I am getting the oil change for the highest amount of mileage, usually driving sparingly throughout the week, and still having to get oil added in between oil changes. I have been told by the company completing oil changes that because of the gdi motor I will need to routinely check my oil, even if there is no oil light on.

The contact owns a 2018 Hyundai Santa Fe Sport. The contact stated while driving at 50 MPH, the accelerator pedal was depressed; however, the vehicle failed to exceed 50 MPH. The check engine warning light was illuminated. The vehicle was taken to an Advance Auto Parts Store, and it was determined that there was no oil in the engine. The contact added oil to the engine to be able to drive to the residence. The dealer was contacted the next business day. The contact stated that the dealer diagnosed the vehicle with a crack in the oil pan. The vehicle was repaired; however, the failure persisted. The contact stated that a week after the repair, the contact noticed that the oil level was low. The vehicle was taken to an independent mechanic, and an oil change was performed; however, the vehicle failed to exceed 50 MPH. The local dealer was contacted; however, the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 76,693.

I purchased this car in December 2023. As 2024 happened, I had a routine maintenance check on the car. The oil was changed, all the fluids checked etc. It appeared fine. Within a year, I have to change the spark plugs twice and once again in 2025..That's isn't normal. The plugs were jet black. Oil is seeping out of the gas tank. Not natural. There is an OIL CONSUMPTION ISSUE. My mechanic had typed notes on my receipt on what the problem(s) had been. Every other week, I am adding oil to my car. It isn't paid for. I would like a recall established on my car. I am [XXX] and need a reliable car. I went to one HYUNDAI dealership, provided the information my mechanic had written. Refused to give me the oil consumption test. I paid $200 or $238 for an oil change and a plug of some sort. I am aware that there was a class action lawsuit against HYUNDAI in 2022 for the same issue for my car. Money was paid to those whom had this issue ( I read). I have problems with my legs and back. I really need help. I need a recall on my car. Approximately, maybe a little less, every 5000 miles, my engine light comes on. I know a faulty spark plug shake. I can't afford to buy a new or replacement engine that work. I have never contacted NHTSA before I purchased this vehicle. I did call HYUNDAI main customer service line and was informed a recall had never been issued for this problem. Yet, numerous owners had and still have this issue along with the car hesitating at time to start. That is a problem with my as well. I am not sure of the exact date the first set of spark plugs were replaced. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The day after I purchased this 2018 Used Hyundai Santa Fe, the passenger air bag light came on. July 2024. I have been working with the dealership where I purchased the vehicle (Larry H Miller Chevrolet, in Murray Utah), and calling Hyundai Corporation for months. Hyundai called me every 3 days for almost 3 months with a customer update and they would say is "We have no updates". This is extremely frustrating. The main idea Hyundai Corporate office is telling me is that they don't have a contract with someone that would provide the vehicle part to fix this issue. They don't have a car part available in existence to fix this issue. This is a huge safety concern. I asked them "does that mean my passenger airbag could randomly go off while I'm driving down the road, or does this mean that my passenger airbag won't go off in case I got in a wreck?" They said that it could mean a number of things, but at this time, do not put anyone in the front seat of my car. The car part is a passenger airbag plate sensor that is underneath the passenger seat. Hyundai said there are no after market parts that are sufficient enough to put into the vehicle. Especially with it being a safety issue. How can this be on the consumer??? This is very crippling. This is a huge safety concern with no timeline for resolve. I am very mad. I have been fighting this for 9 months now.

The motor is gone in the vehicle. Oil light would blink and valves rattling right after having the oil changed. I have had the car checked by numerous mechanics and no oil leaks were found but oil levels would be low a week after the oil change. I ride around with oil in the car and have to make sure to check the oil before every trip even if it’s right around the block. I’ve had the car for a year in February and the motor went out a weeks ago. I have checked for engine recalls and have not found any but have found multiple forums of people having the same issue. A new motor for this vehicle is over $3000

Oil consumption issue with proof that my vehicle is burning more than a quart of oil every 1k miles and Hyundai refuses to support my claim.