Engine And Engine Cooling Problems of Hyundai Tucson - part 2

I've taken the vehicle to several mechanics for engine-idling when turning, going up-hill. I've purchased new plugs, lines, engine cleaners, no-one can figure it out. The oil now has engine shavings even though the oil was recently changed. The car broke down today.

See all problems of the 2017 Hyundai Tucson 🔎.

As I was driving I was stopped & told my car was on fire. I immediately stopped & hopped out & less than 30 seconds later half of the hood caught heat/fire & flew into the windshield breaking it. At least half the car is burnt to ashes.

See all problems of the 2016 Hyundai Tucson 🔎.

I purchased this car [xxx] as a cpo vehicle from a Ford dealership. By [xxx] the oil pressure light would flicker and it was clear the car was burning a lot of oil between changes. On 8/22 an oil change was completed at dealer. On [xxx] the oil pressure light flickered and it was three quarts down. An oil consumption test was started at 112,000. On sat [xxx] while driving to dealer for oil check, the car began shuddering violently and the check engine light came on, and went into limp mode. I was on a dangerous mountain pass at the time and it could have been a major issue. The day before a tractor trailer had almost run me off the road, if my car had stalled then I might not be here. Hyundais have a known issue with oil burning and engine damage. Right now I am stuck in a 14k loan with a car that is unsafe to drive. I am not sure what the dealer plans to do, or what the diagnosis is, but its clear these engines are not safe. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2018 Hyundai Tucson 🔎.

Driving on interstate for approx 30min and the car stopped accelerating. We safely merged off to the side and the car completely shut off. The car would not start. We put oil in and it started up by engine light was on. We got vehicle towed 1hr back into town. We are lucky no cars were behind us to cause an accident. We are also lucky engine did not catch on fire. This happened completely out of the blue. I get my vehicle serviced regularly and serviced at Hyundai dealerships for major repairs. The engine failed us and is available for inspection. Our claim was denied by Hyundai due to my mileage being 10k over the warranty. However they installed the faulty engine so regardless of mileage this needs to be resolved.

See all problems of the 2015 Hyundai Tucson 🔎.

2018 Hyundai Tucson has excessive oil consumption. Burns multiple quarts of oil per 1000 miles. Hyundai refuses to remedy the oil consumption. Oil consumption has also led to having to replace the catalytic converter due to oil burn off.

Engine started making a knocking sound, then the oil light came on followed by the check engine light. Accelerates and decelerates on its own. Was forced to immediately pull over across three lanes on interstate 95. It’s been over two weeks and I’ve yet to hear if Hyundai is going to cover a replacement engine. However, what happened is exactly what they have listed on their website ?? what to look out for check-engine check engine oil-light engine oil pressure a knocking noise from the engine that increases in frequency as the engine rpm increases. Reduced power and/or hesitation and vibration. Illumination of the “check engine” light in the instrument cluster. Illumination of the “engine oil pressure” warning lamp.

See all problems of the 2021 Hyundai Tucson 🔎.

Excessive oil consumption leading to catastrophic engine failure.

The contact owns a 2017 Hyundai Tucson. The contact stated that while depressing the accelerator pedal, the vehicle failed to respond while stopped at a red light. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 95,000.

Engine ran out of oil with no indication on instrument panel that it was happening. Engine now knocks and needs replacing. My independent service center has determined a failure. It is available for inspection.

I am submitting this complaint regarding an ongoing and dangerous issue with my 2022 Hyundai Tucson involving repeated fuel injector failures that have caused the vehicle to stall and lose power while driving, without any prior warning indicators. The first incident occurred in October 2023, at approximately 16,000 miles, when the car suddenly died while I was driving. There were no warning lights or signs of a problem before the stall occurred. The vehicle had to be towed to the dealership, where they replaced two fuel injectors. Just two weeks later, the same issue happened again—the car died while driving and was towed back to the dealership. The remaining injectors were then replaced. Unfortunately, this problem has continued. In November 2024, at around 26,000 miles, the vehicle again stalled while driving, with no warning, due to another fuel injector failure ( more failed injectors). Most recently, on October 18, 2025, with 31,000 miles on the odometer, my Tucson lost power and died while I was merging onto an interstate—once again with no warning or alert of any kind. I am still waiting for confirmation of how many injectors have failed this time. This is an extremely serious safety hazard. Losing engine power unexpectedly, especially while merging into highway traffic, puts both the driver and others on the road at significant risk of a collision or serious injury. Despite multiple occurrences, Hyundai has not identified the root cause of the injector failures and continues only to replace the faulty parts, which clearly does not resolve the underlying issue. It is unacceptable that a relatively new vehicle would experience repeated fuel system failures of this nature, and it is clear that there is a systemic defect affecting safety and reliability. I urge the NHTSA to investigate this issue to determine whether other Hyundai Tucson owners are experiencing similar failures and whether a recall or safety action is warranted.

See all problems of the 2022 Hyundai Tucson 🔎.

My family’s safety is at serious risk with my 2021 Hyundai Tucson, which I’ve owned only 55 days. This vehicle has stalled three times while driving, putting me and my two young children in immediate danger. Each time, the car operated normally until a flashing engine light appeared, rpms spiked, and the vehicle suddenly lost all power—entering “limp mode” and unable to exceed 3,000 rpm or 50 mph. The first failure occurred 9/14/25 while merging onto the interstate, forcing me to lose power mid-acceleration as surrounding vehicles slammed their brakes to avoid collision. 13 days later, it happened again in stop-and-go traffic, leaving me stranded on the shoulder. Both incidents occurred without warning or prior check-engine lights. The third—and most terrifying—incident was on October 17, 2025, when the engine completely died 300 miles from home on a busy highway. My children, ages 4 and 6, were terrified as cars sped by. We were extremely fortunate not to have been hit. I am urgently requesting assistance for the immediate replacement of this vehicle’s engine. It is covered by Hyundai’s 15-year/150,000-mile extended warranty, clear evidence the company was aware of these issues. Service records from the previous owner-that I was told about by Hyundai show ongoing engine problems and recalls since 2022 further proof this vehicle should have been retired from service as a parent, I’m very alarmed that Hyundai refuses to act until “catastrophic damage” occurs. This policy is irresponsible and endangers entire families. There’s at least 50 NHTSA complaints describing identical issues; stalling, power loss, and bearing failure linked to defective connecting rod bearings. Yet, Hyundai has denied a replacement, insisting on waiting for further damage and failures in operation. I beg you to intervene and prioritize my family’s safety before tragedy inevitably strikes. My children should not be put at risk due to corporate negligence, greed and absence of accountability.

My 2018 Hyundai Tucson 1. 6 turbo (VIN [xxx] , 113,000 miles) burns oil excessively and was deemed to need full engine and turbo replacement ($15,382. 95). Hyundai refuses responsibility (case #xxx). This is a widespread defect that causes potential loss of power while driving. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2020 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the low oil warning light briefly illuminated. Upon inspecting the vehicle, the contact noticed that the engine oil level was low. The vehicle was taken to the dealer, where the contact was informed that the engine was not consuming oil and that an oil change was needed. The dealer advised the contact to return after 1,000 miles to inspect the oil level. The vehicle was taken back to the dealer; however, it was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 72,000.

See all problems of the 2020 Hyundai Tucson 🔎.

The auto has 112,000 miles and is using oil excessively. A quart with every gas fill up.

Engine burning oil. Had 2 oil consumption tests and failed both. Had engine combustion chamber cleaned and still burning oil. Hyundai denied new engine.

The contact's sister owns a 2018 Hyundai Tucson. The contact stated that while his sister was driving at an undisclosed speed, the vehicle briefly jerked and jolted, prompting her to pull over to the shoulder of the roadway to turn off the vehicle. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed failures with all four fuel injectors and the injector assembly. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the independent mechanic, who then diagnosed a failure with the catalytic converter. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 78,563.

The 2017 Hyundai Tucson I owned had the engine fail (internal bearing failure) rendering the car basically worthless. Hyundai has multiple recalls on this type of engine. My car had 120,000 miles when the engine failed. Hyundai refused to offer any assistance on this, fully knowing that these engines have had thousands of problems in australia and the us. This is a problem they know exist and they are doing nothing!!!! they need to admit the problems and help consumers when this happens instead of trying to weasel out of any responsibility. Thanks.

My 2018 Hyundai Tucson sel plus limited showed a flashing check engine light on 10/14/2025 and basically gave up acerating pass 60mph while I was driving , I pulled over and called the dealership where I bought it from they told me to drive it in, I did and they did an oil change and filled up, we then began the oil consumption test which I brought it back yesterday 10/24/2025 and was told the whole engine needed to be replaced due to a major oil consumption problem, they advised me to bring it the Hyundai dealership to get it fixed they rudely told me no we can't fix this, we would have to wait for it to flash the check engine light again and it would have to fail a bearings test before it can be fixed and still have a possibly of it not fixing. Only confirmed by the lot I bought it from since Hyundai refused to look at it.

Part(s) affected: engine / engine control / stall / loss of power summary: my 2016 Hyundai Tucson (VIN: [xxx] ) has an active p1326 – knock sensor detection system (ksds) code, which indicates rod bearing wear and imminent engine failure. The vehicle experiences: •loss of power •inability to accelerate •engine hesitation •risk of stalling while driving these are serious safety risks. This issue is part of the Hyundai/kia engine defect settlement xxx), yet Hyundai refuses to provide towing or address the safety risk despite the p1326 code being a known precursor to engine seizure. The vehicle is currently unsafe to drive, and Hyundai customer care has refused to escalate my case according to settlement requirements. This is a safety hazard that can cause engine seizure and sudden loss of power while driving. Details: •Hyundai case #: xxx •engine settlement code p1326 confirmed •Hyundai refusing proper support •vehicle should not be driven NHTSA intervention is needed due to Hyundai’s failure to address a known safety defect. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On 10/13/25, I was driving on a state hwy & lost all power. All of my warning lights came on. I managed to pull into a driveway & when I tried to start it, puffs of smoke were coming from under the hood. I got it to my mechanic & he said my starter was burnt up. He replaced the starter & discovered that my engine is seized up. It was a scary incident especially driving on a busy state highway. It put my life & others lives in danger. There were no warning lights on prior to this. I acquired the vehicle in February from a car lot. I have had it serviced regularly.

See all problems of the 2014 Hyundai Tucson 🔎.

The contact owns a 2023 Hyundai Tucson. The contact stated that while driving at approximately 5 mph in a parking lot and slowing down to park the vehicle, the vehicle independently accelerated. The contact depressed the brake pedal with force and stopped the vehicle, and was able to shift to park(p). The contact stated that the rpm revved up to 8,000 rpm, and the contact turned off the vehicle. There were no warning lights illuminated. The contact had taken the vehicle to a local dealer, and the dealer was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 19,241.

See all problems of the 2023 Hyundai Tucson 🔎.

High oil consumption, taken to dealer for oil consumption test, have to drive vehicle 1000 miles , then take vehicle back to dealership to see how many quotes of all I’ve burnt or lost recheck oil levels.

See all problems of the 2019 Hyundai Tucson 🔎.

My 2017 Hyundai Tucson has completely broken down will not go into reverse had a diagnostics at Hyundai. I thought it was going to be covered because of the class action suit. My car apparently was not in the recall or the suit. I don’t understand I have the identical problem of the dual clutch transmission issue. I’ve tried to get Hyundai to do good-faith repair they refused. I’ve contacted carmax where I purchased the vehicle. They had the car when the lawsuit was finalized I didn’t know anything about the lawsuit or the problem with the vehicle. I’ve had the car for five years it’s at 85,000 miles. I don’t know what to do.

Beatriz duran scarlett. B. Duran@gmail. Com 734-360-5857 313-917-0531 vehicle information: • VIN: km8j23a40ku841552 • year: 2019 • make: Hyundai • model: Tucson • mileage: 132,303 problem description: on oct 11, 2025, my 2019 Hyundai Tucson entered limp mode on the freeway, losing power suddenly, posing a safety risk. This followed a dealership visit a couple months ago for a recall engine repair (possibly 21v-727). They returned the car with a check engine light, claiming it was a false error needing a reset on my next visit. No reset was done. On oct 11, the limp mode forced a tow back to the dealership. They now demand $300 for diagnostics and refuse a loaner, claiming it may not be warranty-related. I’ve escalated to Hyundai national team case number : 41621677 with no resolution after four days. This feels like a safety defect tied to the prior recall work.

On October 11, 2025, I discovered that my 2019 Tucson had no engine oil. I put three quarts of oil in at that time. Fast forward two weeks, October 25, 2025, and the dipstick read dry again, prompting more oil to be required. Unfortunately, I'm passed the 30 day warranty with the dealership I purchased the vehicle from so now this burden has fallen on my shoulders.

Vehiclr has been doing this since 4 montbs after purchase, then a recall came out we were told it would fix the problem. 3 times now since the recall the odometer screen and media screen will go blank while your driving. The car wont accelerate, turn signals, and steering colum becomes hard to operate properly. We have had to near accidents 1 being less than 2 hours in August of 2025 after Hyundai just claimed to repair the issue. We were driving on [xxx], screen went out, we lost full control of steering, had to wrestle with the wheel to keep car in its lane, we were almost hit by semi truck and ran off road. We immediately took car back to dealership, and shop assistant mgr was able to see for himself, it wasnt working after theu just made repair. They kept car a few days we were very reluctant to take vehicle back, out of these safety concerns, and my family having to ride in this vehicle. We took ot back as the dealership assured us the matter had been taken care. Then last week on [xxx], in the evening was driving down street and the screens started to flicker and the car wouldnt stay centeryed in the lane, then it happened both went blank, the car slowed down and the fight began on operating vehicle. In regards to no turn signal would go off, it wouldnt accelerate, the steering wouldnt operate correctly, if o wanted to center the car in the lane, it would pull the car another direction. A 7 minute ride home took over 20 minutes. We took car back to world Hyundai matteson, the next morning and called Hyundai corporate office to inform them we didnt want the vehicle back. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2025 Hyundai Tucson 🔎.

Vehicle propulsion system failed, as a result vehicle rolled down an inclined driveway in to the street and was stuck in the middle on the street in traffic. Vehicle had started normally, was able to shift into drive, no obvious warning lights or error messages displayed. Vehicle would shift into drive/park/reverse as required but would not move. Upon shutdown an restart two warning lights were display but vehicle would still not move. Vehicle only had 168 miles on the odometer. Vehicle is a hybrid, engine was running and battery charged. Apparently the problem was a failed "over the air software update", this was corrected by dealer (see attached file). Safety issue is that the vehicle, 1 failed to display any error regarding a failed update, 2 failed to immobilize the vehicle allowing to move in an unsafe state, 3 failed to notify owner that updates had been done, 4 proceeded with an over thew air update that could potentially place the vehicle in an unsafe state.

The contact owns a 2016 Hyundai Tucson. The contact stated that while driving 75 mph, the vehicle inadvertently lost motive power and was unable to accelerate above 35 mph, prompting the contact to discontinue driving the vehicle. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed failures with the engine knock sensor and catalytic converter. The contact was informed that the vehicle was consuming an abnormal amount of engine oil. The vehicle was repaired. The manufacturer was notified of the failure, a case was opened, and the contact was provided with goodwill assistance. The failure mileage was 70,000.

First incident was July 2025 . Car had 1300 miles. Would not accelerate over 25 miles an hour. Made an appointment with route 60 Hyundai in vero bch, FL. They could not find anything wrong. (invoice # [xxx]) second time [xxx]. 3009 miles on the speedometer. The car would not accelerate over 4mph. After several minutes acceleration was possible. We will once again return to route 60 Hyundai. Car could not get thru a busy intersection. Very dangerous. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Shortly after purchase, I had an oil change and vehicle inspection performed. I was informed that my engine may have an internal defect causing it to burn oil excessively. I later took the vehicle to a aaa-approved Hyundai service center, where they confirmed that the engine is burning oil due to a known manufacturer issue and that it is not the result of owner misuse or neglect. I have been quoted approximately $11,000 for a replacement engine, which is an extreme and unexpected cost for a recently purchased vehicle in otherwise good condition.

Had an oil change on September 29th. The mechanic brought to my attention metal shavings in the oil and advised that I should get rid of the car because it won’t last much longer. It drove fine for a day until the next afternoon I was driving on the highway with my children and the engine started knocking loudly. The car stopped accelerating past 45 mph. I was close to my house fortunately but barely made it as it sounded like the engine would blow. It is now sitting in my driveway still knocking when I start it and don’t feel safe driving it anywhere. There were 0 warning lights. I was not aware of the engine issues these cars had until I did some research and looks like it’s very common. Seeing some people had luck getting replacement engines in the past and many others not. This needs to be addressed and Hyundai needs to be held responsible for the awful oil consumption issue resulting in failing engines. We should not have to provide proof of maintenance when clearly this is an issue regardless.

The vehicle is experiencing excessive oil consumption and increasingly severe engine performance symptoms. The oil level drops rapidly between changes, but the loss is not due to external leaks. The engine burns oil internally, causing residue buildup and damage to other components — specifically the intake manifold and catalytic converter, which the dealer has now recommended replacing. These issues align with the symptoms addressed in Hyundai campaign 966 (engine monitoring / knock sensor detection system), which is intended to detect early bearing wear and related oil consumption defects. However, the dealership refused to perform the required campaign diagnostics (bearing inspection, ksds verification, and oil-consumption test) without charging a diagnostic fee. Even though the engine has not yet fully failed or entered limp mode, the excessive oil consumption is already causing secondary damage to emissions and intake components. If left unresolved, this can escalate to engine seizure, catalytic converter overheating, or exhaust-related fires due to unburned oil entering the converter. These are clear safety hazards that can result in loss of power, smoke, or fire while driving. Multiple Hyundai owners have reported identical problems — excessive oil loss, residue damage to emission systems, and dealer refusals to perform campaign 966 inspections. These patterns indicate a systemic engine defect that leads to downstream component failures, not isolated wear. Replacing the manifold or converter does not correct the root cause, as oil consumption continues after replacement and will likely damage new parts. The dealer’s refusal to perform the manufacturer’s required diagnostics and their attempt to charge for unrelated repairs prevent proper defect identification. This is a serious and ongoing safety issue affecting Hyundai Tucson and other models with the same engine family.

Dear NHTSA, I am submitting this complaint to report a recurring issue with oil consumption in my Hyundai vehicle, which I understand is a known problem affecting this particular engine type and model. I am the original owner and have been a loyal Hyundai customer for many years. I have followed all recommended maintenance, including regular oil changes. Despite this, my vehicle has developed excessive oil consumption that has not been resolved through standard service procedures. The dealership has contacted Hyundai for approval to perform a combustion chamber cleaning, but based on my research and feedback from other owners, this procedure does not effectively address the root cause of the issue. My concern is that this problem may be indicative of a broader mechanical defect that could impact engine performance and safety. My 10-year warranty is nearing expiration, and I am worried that delays in resolving this issue may result in the loss of warranty coverage for necessary repairs. I believe this issue warrants further investigation, as it appears to be affecting multiple vehicles with the same engine configuration. I respectfully request that NHTSA review this matter and consider whether a broader safety investigation is warranted. Thank you for your attention. Sincerely, kelly stafford.

2022 Tucson (nx4, alabama built) 2. 5l engine experienced a catastrophic failure leading to Hyundai dealer diagnosis that "cylinder #3 is not contributing properly," which requires a full engine replacement. The vehicle is currently located at home and is available for inspection upon request. The engine scuffing has resulted in a severe loss of power contribution from cylinder #3, leading to potential for sudden engine stall or complete loss of motive power while driving. If the engine seizes or stalls at highway speeds or during a critical maneuver (e. G. , merging onto a freeway or turning across traffic), it creates an unreasonable risk of a rear-end collision or a catastrophic accident, endangering both the driver and others on the road. Furthermore, the internal mechanical failure creates a significant fire risk due to potential oil leakage onto hot exhaust components. The problem has been confirmed by Hyundai service center in el paso, texas and three independent service centers in arizona and texas. All four assessments concluded that the vehicle requires a full engine replacement due to severe internal damage. Inspected by Hyundai service center in el paso, TX. Despite confirming failure, Hyundai refuses to provide critical diagnostic data (power balance test, endoscopic inspection, dtcs) and the determined root cause. This refusal hinders warranty transparency. The check engine light (cel) did not illuminate. Symptoms appeared late September 2025 at approximately 88,000 miles (audible engine noise/scuffing, rough idle, significant power loss). This failure at non-typical mileage demonstrates a severe internal defect and a safety system malfunction (failure of the ecu/cel to adequately warn the driver). Note: dashcam video documentation of the engine failure symptoms (audible noise and power loss) is available and can be presented to investigators upon request.

The contact owns a 2020 Hyundai Tucson. The contact stated that the vehicle unintendedly shut off while driving. The vehicle was restarted. There were no warning lights illuminated. The local dealer was contacted and scheduled an appointment. The vehicle was not yet diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 70,000.