The vehicle has a difficult time turning over when cranking, the RPMs are sticking and the car periodically shuts off at red lights. Several warning lights pop up when it won't crank and then other warnings when the car just completely shuts off at red lights. I drive the interstate in [XXX] daily for work, so with the engine stalling my safety is at risk every time I drive it. Likewise when it won't crank, my safety is at risk. I had two Hyundai recalls updated in my car in 2022, Hyundai Recall 209 which was a connecting rod bearing test and my car passed so they installed the other Hyundai Recall 966 which was software update for the knock sensor detection system to alert the driver of future issues. Those issues are now current. The software is detecting a critical failure which is why the car is shutting off - entering limp mode, or the engine is failing. On April 9th through the 11th, 2026 my vehicle was inspected by a Hyundai dealership, where a technician identified a developing engine concern and advised me to continue driving the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Atlanta, GA, USA

My Hundai Tuscon 2017 was making a whurring sound on the highway, at which time my RPM's were not going over 3. As I was looking for places to pull over on the highway, I heard a loud 'pop' and then my engine started smoking and an intense rattling ensued to where I could hear a series of parts drop out of the bottom of my car. My car began smoking and the engine completely stalled just in time for me to make it to the side of the road. I took it to a local shop for repairs and they showed me three holes in my engine.

- League City, TX, USA

The contact owns a 2017 Hyundai Tucson. The contact stated that after the vehicle was taken to the dealer for a recall repair, there was a burning odor coming from the vehicle, with white smoke from the tailpipe. Additionally, the check engine warning light was illuminated. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 50,000.

- Joshua, TX, USA

Knocking noise in motor and metal flakes in the oil. Called local dealership. They report no recalls for this issue.

- Mill Run, PA, USA

The contact owns a 2017 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the engine made a ticking sound. No warning light was illuminated. The vehicle was taken to the dealer and was repaired under NHTSA Campaign Numbers: 20V543000 (Service Brakes, Hydraulic) and 21V727000 (Engine); however, the failure occurred after the recall repairs were performed. The contact stated that while driving at an undisclosed speed, the vehicle stalled and failed to accelerate above 40 MPH. Additionally, while depressing the accelerator pedal, there was an extremely loud ticking sound coming from the engine. The check engine warning light was illuminated. The vehicle was taken back to the dealer; however, the vehicle was not yet diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 67,700.

- Alexander City, AL, USA

The contact owns a 2017 Hyundai Tucson. The contact stated that the vehicle was consuming an excessive amount of engine oil. There was an abnormal knocking sound coming from the vehicle. There was no warning light illuminated. Due to the failure, the vehicle was towed to a dealer, and the excessive oil consumption was confirmed. The contact was informed that the vehicle was included in NHTSA Campaign Number: 21V727000 (Engine), and the engine was replaced. The vehicle was repaired, and a family member retrieved the vehicle and drove it to the residence without failure. Several days later, the family member started the vehicle, and fuel started pouring out from underneath the vehicle. Due to the failure, the vehicle was towed back to the dealer and was diagnosed the vehicle with an O-ring failure inside the fuel injectors. The dealer repaired the O-ring, and the contact picked up the vehicle from the dealer. Soon after retrieving the vehicle, fuel started pouring out from under the vehicle at start-up. The vehicle was towed back to the dealer and remained with the dealer. The manufacturer was notified of the failure, and a claim was filed. The vehicle was not repaired. The failure mileage was approximately 68,000.

- Grimesland, NC, USA

To Whom It May Concern, I am writing to formally escalate an unresolved safety issue involving my 2017 Hyundai Tucson (VIN: [XXX] ) that has now been ongoing for over two years. I have made repeated attempts to complete a safety recall repair through multiple authorized Hyundai dealerships, including Hyundai of [XXX] and Hyundai in [XXX]. Despite scheduling several appointments, I have consistently been turned away, had appointments effectively canceled, or been told that no one is available to perform the repair. This has occurred across more than one location and over an extended period of time. This is unacceptable. A federally mandated safety recall especially one involving the engine is not optional and must be completed within a reasonable timeframe. The continued failure to complete this repair places me at risk and reflects a serious breakdown in both dealership accountability and corporate oversight. Additionally, my vehicle has experienced significant paint chipping. While I understand this may not be a safety recall issue, it has affected the overall condition and value of my vehicle. Given the prolonged delay and inconvenience I have experienced, I am requesting that this concern also be reviewed for potential goodwill repair or coverage. At this point, I am requesting immediate action: Assignment of a case manager A confirmed and honored appointment date for recall repair at a dealership that is able to complete the work Written confirmation that the repair will be completed without further delay Information regarding a loaner vehicle or transportation if the repair requires extended time Please note that I am filing a formal complaint with the Illinois Attorney General-??s Office due to the repeated failure to complete a federally required safety recall. If this matter is not resolved promptly, I will pursue additional consumer protection and legal remedies. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Chicago , IL, USA

The contact owns a 2017 Hyundai Tucson. The contact stated that while starting the vehicle and driving at an undisclosed speed, there was an abnormally loud grumbling sound coming from the engine. There was no warning light illuminated. The contact stated that the vehicle unexpectedly entered LIMP Mode. There was no warning light illuminated. The vehicle was towed to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure and informed the contact that documentation of previous oil changes was required. The contact stated that the manufacturer accused the contact of a lack of maintenance, which was associated with the engine failure. The failure mileage was approximately 98,000.

- Sherborn, MA, USA

About every 500 miles I have to add about a quart of oil. I brought my car to McDaniels Subaru for maintenance on my car. My son is a master tech there and I know he is very thorough. My contract lets me go there also. So he checked the dipstick and it was below a quart of oil. He did change the oil change. I cannot drive a long distance without carry a large container of oil. He has warned me not to let it get low again or the engine will seize. This car gets all its regular Maintenance on time. I have a contract to do this. The dealership had all the maintenance records at the time I purchased it. It has been very well maintained.

- Camden, SC, USA

My ABS has been sticking and finally the pad broke off. my car made a squealing noise everytime I drove it. I had parked in my driveway and there was a piece of metal on the ground. I showed it to my son, he took the tire off and said it held my ABS Brake pad on to my Driver side rear. He is a master tech for Subaru. I just haven't had time to take it into Hyundai. It has stopped squealing, but my ABS brakes no longer work.

- Camden, SC, USA

On March 10, 2026, my 2017 Hyundai Tucson entered 'Limp Home Mode' while driving, a known safety defect that causes a sudden loss of engine power. Diagnostic testing confirmed error code P1326 (Knock Sensor Detection System - KSDS). Despite this vehicle being covered under the Theta II Engine Class Action Settlement (Recall 209), which provides a 15-year/150,000-mile extended warranty for this specific issue, the dealership (Jim Ellis Hyundai of Atlanta) is refusing to perform the warrantied repair. Instead, the dealership has provided an estimate (#XXX) attempting to charge me $816.22 for the knock sensor replacement. They are also withholding the full GDS diagnostic scan reports and freeze frame data despite multiple written requests. Furthermore, the dealership is threatening to charge daily storage fees while actively denying a mandated safety repair. This refusal to honor the settlement warranty leaves the vehicle in an unsafe, unrepaired condition. This vehicle is a subject of the In re: Hyundai and Kia Engine Litigation II settlement. The refusal of the dealership to perform the KSDS-related repair (P1326}) is a direct violation of the court-approved settlement terms and a failure to address a documented safety defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Marietta, GA, USA

This car has major oil consumption that affects the engine and catalytic converter. This can cause engine damage and stalls in driving that affect safety on the roads because the car doesn't accelerate properly. There were no warning signals to indicate this being a problem with the car, especially at purchase. This car will get an oil change and in less than a week, the oil is gone and bone dry.

- Mcdonough, GA, USA

While driving my vehicle, the engine RPM suddenly revved very high, and the vehicle hesitated to accelerate. A warning messaged appeared stating "Transmission too hot stop safely." I was driving up a hill when this happened. I pulled over and turned the vehicle off for about two minutes. When I restarted the vehicle, the warning message disappeared even though the vehicle would not realistically have cooled down that quickly. The issue concerns me because it could create a dangerous situation in traffic if the vehicle loses power or hesitates to accelerate when pulling into traffic or climbing a hill. The problem has occurred without warning and does not leave and persistent warning lights afterwards. I am very scared to drive this car, especially when I have my child with me. If I need to move out of the way and someone is driving that is not paying attention, there will be an accident because of the hesitation and the non-movement when I accelerate. I am reporting this issue in case it is related to a defect with the transmission system in this vehicle.

- Derry, PA, USA

The contact's wife owns a 2017 Hyundai Tucson. The contact stated that the engine was consuming an excessive amount of engine oil. During frequent oil checks, the oil on the dipstick was low soon after an oil change. The vehicle was taken to the dealer approximately 15 times for oil consumption issues. Several oil consumption tests were performed on the vehicle for every 1,000 miles driven; however, the results varied from normal to low oil consumption. The engine had been partially disassembled twice, and pictures were taken and sent to the manufacturer. The manufacturer approved a combustion chamber cleaning to be performed on the vehicle; however, the failure persisted. The contact had spoken with the manufacturer several times and was provided a case number. The manufacturer ultimately denied the request for an engine replacement. The vehicle was not repaired. The failure mileage was 63,547.

- Chadds Ford, PA, USA

While driving on the interstate at highway speed, my 2017 Hyundai Tucson lost power without any warning lights or prior symptoms. The vehicle experienced an immediate loss of propulsion while I was traveling in traffic, creating a dangerous situation because surrounding vehicles were also moving at highway speed & I had to quicky maneuver the vehicle to the shoulder with no power. The vehicle had approximately 73,861 miles at the time of the failure. After the incident, the vehicle was taken to a Hyundai dealership and diagnosed with a burned exhaust valve requiring replacement of the cylinder head & valve. The estimated cost of repair provided by the dealership was approximately 7550. The vehicle had no prior warning lights or symptoms before the sudden loss of power. A sudden engine failure resulting in loss of propulsion at highway speed presents a serious safety risk to both the driver and surrounding traffic. This was an extremely dangerous failure.

- Bluffton, SC, USA

I purchased this car from drive time, and when told about a possible recall on the engine i asked about it. We were told that the issue had been resolved. Not even 10 minutes after driving it off the lot the engine started misfiring, we had done a test drive prior to purchasing this vehicle and nothing had popped up on the dash about any problems. We have been unable to get it looked at. I was not sure if a report should have been filed until now. i am unable to produce photos at this time

- Milton, FL, USA

Car engine seized and lost ALL power going 60mph down the highway at night with my child in the back seat. I have poured quarts and quarts of oil in this vehicle because it burns oil at an alarming rate until it eventually runs dry and the engine seizes. This is extremely dangerous and luckily my child and I were able to drift to the side of the road without harm and injury. Very discouraging that there are thousands of these cars and engines on the road that can literally seize up at any minute. Maintenance was performed and kept up with. The Oil pressure light had been flashing when the vehicle turned but was flashing even when oil had just been changed. These engines are dangerous and have people in a financial hard spot. I still owe $16k on a car I can no longer drive and that Hyundai is saying due to owner maintenance will not get an engine replacement. The Facebook group Hyundai Oil Consumption test has thousands of people dealing with the same exact issue on these cars and engines.

- Charlestown, IN, USA

Purchased used via Carvana in Sept 2025, check engine light came on while driving it home indicating a pre-existing mechanical defect. We submitted the claim through Silver Rock (Carvana's warranty company) and brought to their approved mechanic. The recommended the following repairs, several that were denied by Carvana/SilverRock: spark plugs, alternator, serpentine belt, fuel injection service, electrical ignition coil. A month later check engine light illuminated again and through further diagnostics the mechanic found that 2 of the faulty spark plugs were an incorrect model/fit for our vehicle and reported that information which resulted in replacement being approved (a month after initial request). Fast forward to January 2026 we experienced the widely reported knocking noise while driving coming from the engine and had it towed. The damage is a thrown rod and damaged bearing, which is consistent with the current oil consumption litigation, requiring engine replacement. Our 2017 Tucson 1.6 L turbocharge is not included in the recall. Furthermore, Carfax report shows last oil change reported was 2023. Carvana confirms an oil change is part of their 150 point inspection before a sale, however unable to provide me with documentation and failed to report a record of the work to Carfax. There are many instances of negligence on Carvana's part from failure to provide record of maintenance, which is also failure to adhere to their standard policy, and declining recommended service directly from their approved mechanic, knowing that this vehicle could be impacted by the well known defects through Hyundai. We are requesting assistance with engine replacement meeting safety standards and ensuring consumer protection.

- Newport News, VA, USA

MY engine check engine light and than a warning light came on saying not to drive it and i took it to be repaired at a shop and a hyndai dealer and they told me my engine needed to be replaced even though i always serviced my car. It has 103,000 miles on it. It is the same problem as the other person that reported this problem. The other models were recalled but not this one. Im sure by now you know there is a problem with this engine too. It should be replaced by the company!!

- Bayonne, NJ, USA

The contact owns a 2017 Hyundai Tucson. The contact stated that while driving approximately 70 MPH, the vehicle lost power, decelerated, and the check engine warning light started flashing on and off. The vehicle was parked on the left shoulder of the highway and later driven to the right shoulder with the assistance of a State Trooper. The vehicle was later towed to the local dealer, who diagnosed that the engine had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the vehicle was previously serviced under NHTSA Campaign Number: 21V727000 (ENGINE). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 66,000.

- Roanoke, VA, USA