Engine And Engine Cooling Problems of Hyundai Tucson - part 2

My 2018 Hyundai Tucson 2. 0l gdi engine with only 79,000 miles was "knocking" and wouldn't accelerate. We pulled over and towed the vehicle to the local Hyundai dealer who declared "oil level good but failed bearing clearance test". Diagnosed with a rod and bearing failure. They submitted to Hyundai motor warranty the vehicle needed new engine. They declined. I know this is covered under the Hyundai engine 2 class action lawsuit with the extended 15 year/150,000 mile warranty as a result of the catastrophic engine failures. I have all oil change service records for every 5,000-6,000 miles while I was the second owner, as well as, have obtained another from the dealer who bought it from a rental/lease company starting at 14,000 miles. Hyundai corporate is claiming "exceptional maintenance neglect" because of one missing oil change record from the rental company that I may not be able to obtain as the paper trail for the rental car company only states first owner was rental/fleet.

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The reason of this complain is due to excessive oil consumption which now damaged my catalytic converter against Hyundai motors America. The complained started 2021 where we noticed that the low oil engine light up after only 1500 miles from last oil change. We submitted the complained with dealer (carlsbad and escondido CA) and my car failed 3 consecutive oil consumption test and Hyundai performed an engine cleaning, claiming it was going to fix the problem. This happened when the vehicle was still under warranty. At the time they said that if this did not fix the problem, they were still going to fix the car since the issue happened under warranty. The engine cleaning did not fixed the problem, my car no longer has warranty and my catalytic converter fails and makes the vehicle inoperable in highway (engine ceases to accelerate) . We submitted a complain with Hyundai corporate and they denied fixing our car since the vehicle was no longer under warranty. I would like to ask for them to fix the engine and catalytic converter make the car operable again.

See all problems of the 2016 Hyundai Tucson 🔎.

I purchased a brand-new Hyundai vehicle on [xxx] from dublin Hyundai. Since purchase, the vehicle has exhibited repeated, serious defects that compromised the safety of my [xxx] baby and family. Timeline of events: [xxx] – vehicle purchased new. Safety concerns arose within weeks of ownership. July 16, 2025 – vehicle dropped off for major issues: camera display failures, heads-up display malfunctions, and random security errors. Vehicle remained in service for over two weeks. August 2, 2025 – returned with the check engine light on and a scratch on the deck. August 3–4, 2025 – dropped off again; dealership instructed that the fuel level must remain between 50–70%. August 11, 2025 – dropped off again; a loaner vehicle provided was unsafe — gear shift failure, body control system errors, infotainment failure, and inability to lock the vehicle. This put my baby’s safety at direct risk as the loaner could not be secured or reliably driven. August 19, 2025 – vehicle returned with new scratches and multiple issues still unresolved. Late August 2025–present – vehicle was relocated to san jose without my consent. I only know its location from the Hyundai app, which frequently alerts: “battery level is below normal. Please check that vehicle lights and accessories are switched off to avoid battery drain. ” I have not been provided proper updates from Hyundai or the dealership. Safety risk: repeated mechanical and electronic failures in both the new vehicle and the loaner. Vehicle is unreliable, unpredictable, and unsafe for transporting a young child. Manufacturer and dealer have failed to provide a safe, operable vehicle despite multiple repair attempts. I am filing this complaint because these issues pose a serious safety risk to me, my infant child, and other drivers on the road. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My 2017 Hyundai Tucson 1. 6 liter is experiencing severe engine issues that closely mirror those subject to recent class action lawsuits. The engine exhibits excessive oil consumption. I have experienced a sudden loss of power on roadways in traffic as well as on the highway. This issue happened just today. Unfortunately due to a loss of smell, I have been unable to smell if there has been burning oil, however in between my last two oil changes (I only bought the car in October) I had to go it to get it refilled or refill it myself. I use full synthetic oil as well. I brought it into a reputable mechanic and I have been told if I continue to drive the vehicle the excessive oil consumption will lead to premature engine failure, potentially causing a dangerous stall or accident, putting myself and other motorists or pedestrians at risk. The mechanic received codes p0420, p0300, p0302, p0303, and p0304. They were able to conclude oil consumption based on the low amount of oil in the vehicle, the spark plugs being oil fouled, the misfiring on three cylinders, and the p0420 code. I called customer service, the Hyundai dealership in clive, IA, and the contact for the class action lawsuit and litigation ii. I was informed my VIN number was not part of the current recalls or class action, however the symptoms are identical to those widely reported. In the litigation my make and model are mentioned, Hyundai Tucson 2017, however it is listed as the 2. 0 liter engine. My engine is mentioned, the 1. 6 liter, in at least one other vehicle. I believe this vehicle was only excluded by a lack of representation at the time of the litigations. From my call with the dealership, and in research I am not the only one experiencing this problem. While I was lucky enough not to have been harmed, this has the potential to cause great harm. As someone who works for a dot, safety first is in everything I do. I believed this necessary to report for the safety of all those involved.

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The engine blew. It had to be replaced at my costs because hyduadai does not warrant when a car changes hands. It has 81250 in miles. This is happening to lots of people. It’s a 1. 6 l engine. The 2. 0 has a recall. But the 1. 6 needs to be recalled also. Something needs to be done.

The contact owned a 2024 Hyundai Tucson. The contact stated that his wife was reversing out of the work parking space, the brake pedal was depressed, and when the gear shift was shifted into drive(d), the vehicle then accelerated independently. The contact stated that the engine revved, hit a parked vehicle, bounced off that vehicle, and continued to accelerate independently, abruptly veered the steering wheel to the left to avoid hitting a tree. The contact's vehicle then hit a second parked vehicle, where it came to a stop. No warning lights were illuminated, and none of the warning alarms sounded. The driver’s and passenger’s side air bags did not deploy. A police report was not filed. There were no injuries sustained. The insurance company was notified and towed the vehicle to a collision center. The vehicle was not diagnosed. The manufacturer was not notified of the failure. The failure mileage was 17,000.

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Seat belt is coming a part driver side burning oil to the point needs a new catalytic converter.

My car has been consuming large amounts of oil and as a result has had two catalytic converters replaced. Twice now we have been disabled on the highway due to aggressively poor engine performance.

The contact owns a 2019 Hyundai Tucson. The contact stated that while at a red light, the missing key warning light illuminated. The check engine warning light illuminated. The hazard lights were independently deactivated. The contact became aware of an abnormal odor and smoke on the interior of the vehicle and the exterior of the vehicle. The contact stated that all the door latches were independently locked, and the engine seized. The contact stated that her minor child was also an occupant of the vehicle at the time of the failure. The contact stated that a nearby police officer and other bystanders assisted with removing the contact and the minor child from the vehicle. The contact stated that it was a very traumatic experience, and the contact was very fearful for the lives of her minor child and herself. The contact had a doctor's appointment scheduled; however, because of the failure, the appointment had to be rescheduled. The vehicle was towed to the dealer; however, the vehicle was not diagnosed. The contact was offered a trade-in option. The contact declined the trade-in option. The manufacturer was not made aware of the failure. The failure mileage was approximately 52,000.

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The car has issues with major oil consumption, and a chatter engine noise, also has issues with acceleration. Oil will run dry if not topped off every 3 weeks.

On [July 4, 2025], while driving, my vehicle experienced a sudden loss of power followed by smoke and flames coming from the engine compartment. The fire required emergency response and caused significant damage to the vehicle. Thankfully, no one was injured, but the incident posed a serious risk to my safety and others on the road. I had not received any prior warning signs such as engine knocking or warning lights. The fire appears to be directly related to the known defect outlined in recall 209. I am requesting that NHTSA investigate this incident and ensure Hyundai is held accountable for the full scope of this defect, including fire risk. I am also seeking assistance in ensuring Hyundai provides appropriate compensation or resolution for the damages caused.

Without any notice, the crankshaft seized while driving 55 mph on the highway. We were on a highway with one lane in each direction and a shoulder. No warning lights appeared until after the engine failed. We were barely able to coast to the shoulder at the time. The incident blew a baseball size hole in the engine. The vehicle was towed to over 60 miles to noller Hyundai of lawrence, kansas. The repair was paid for under the Hyundai warranty without me providing any maintenance records. The engine is not in our possession for you to inspect, but I'm sure you could reach out to the dealership where it was replaced.

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The contact owns a 2019 Hyundai Tucson. The contact stated that while driving on a main road at 20 mph the vehicle experienced a reduction in automotive power until the vehicle came to a complete stop, the contact was able to pull over onto the side of the road, and the check engine light would illuminate intermittently. The vehicle was towed to a local dealer where the vehicle was not diagnosed as the contact was advised that their VIN was not included in any open recalls. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 132,000.

Engine misfiring, causing low power on interstate 70 also losing brake control.

See all problems of the 2023 Hyundai Tucson 🔎.

The engine in my 2017 Hyundai Tucson limited failed at approximately 111,000 miles. The vehicle began to run roughly, misfiring and losing power with no warning lights or prior indication of an issue. Within days, the vehicle became undriveable and had to be towed to a dealership. The dealership diagnosed the issue as a cylinder misfire due to internal engine damage caused by excessive oil consumption. They confirmed the only solution was a full engine replacement. I was told this issue is not currently covered by recall, despite its similarity to known engine defects Hyundai has recalled in other vehicles. This failure posed a serious safety risk. The vehicle stalled and lost power while driving, making it dangerous to accelerate or keep pace with traffic. Fortunately, the failure did not cause an accident in my case, but it easily could have in different circumstances. There were no dashboard warning lights, oil pressure warnings, or check engine indicators before the symptoms began. The oil level had not been excessively low, and the car had been well maintained. I have opened a case with the manufacturer, but assistance was denied due to mileage and ownership history. This appears to be part of a broader pattern of engine failure in similar Hyundai models. I am reporting this in hopes it contributes to further investigation and potential recall expansion.

Engine has rod knock and low power due to rod bearing failure. There was never an illuminated oil light or message of any sort prior to failure. This vehicle has had oil changes regularly and never been an issue till now. With Hyundai not having a recall on this engine, and seeing many other reviews about this same issue it is a very dangerous issue leaving people stranded and loosing power in times where serious harm issues could occur and this issue is very costly being that the engine will have to be replaced. As a consumer taking care of the vehicle and still the engine failing due to the lack of integrity of Hyundai I believe Hyundai should step up and make it right and take care of the people who have spent there hard earned money on these cars and are now left in the dark.

Won’t shift so that I can gain speed.

On June 30, 2025, I was driving at about 55 mph with the Smart cruise on. A message appeared on the left side of the dash (in the left circular screen) that said “conditions for Smart cruise have not been met”. And the cruise turned off, then a second message appeared that said the engine has been put on idle. At that time I tried to use the gas pedal and got no response. Fortunately I was near a parking lot on my left and had enough momentum to pull in and park. I turned the Tucson off and restarted it and was able to continue to drive. I took the Tucson to the dealer and they tried to duplicate the issue, but were unable to do so. Then the ran a diagnostic, but said it indicated everything came back as normal. I purchased this Tucson limited hybrid on 1/23/2025 so the fact that the dealer couldn’t duplicate the incident didn’t surprise me. I believe that this was caused by a software problem even though the diagnosis by the dealer indicated everything was normal and in range. However, I believe that their equipment and/or their technical expertise was insufficient to identify the problem. You can imagine the danger if this occurs on an interstate or other highway where speeds are as high as 65 to 70 & higher by some drivers.

Limp mode check engine light code p1326.

My engine was recalled and they inspected it and said it was fine in 2023. Fast forward to June 2025, my engine failed. I took it back to the dealership and they tested it and said "it was not bad enough to be fixed under the recall. " before I took it the dealership the check engine light was on, reduced power when accelerating, knocking noise from the engine that increases when the rpms increase, and the oil pressure light is flashing. Upon taking it to the dealership the check engine light has been turned off, but all the other issues still remain. All of these issues were components to the recall. I have called customer care and they assured me that it would be fixed at no cost under the recall, and then I requested a different dealership due to terrible customer service at the prior dealership. Customer care then contacted prior dealership, and went based on the incorrect findings of the dealership, they are refusing to fix my engine that is under recall. Because they inspected it in 2023 they marked the recall campaign as closed.

I think when its hot like in illinois its been super hot the screen keeps going black!! I can't see the dashboard I called my Hyundai dealership will get it looked at seems like I am not the only one dealing with this issue. Main screen on left goes black or it has problem logos on it randomly.

Me and my daughter were headed back home from a family trip and we were stranded on the side of the road luckily we had family tailing us!! my engine light came on while we were still in the city in savannah so we stopped by an autozone and changed the spark plugs so the engine light stopped blinking but when we got about 20 miles from home it stopped going we had to pull over it started smoking and it was really hot but the temperature had never moved we had it towed home!! I keep my maintenance up regularly on my car I had 2 mechanics check it out they both said the piston is breaking the spark plugs and it’s something down in the motor that’s doing it I should not have any motor issues at all with my car!! especially when I do my part at keeping it up I was quoted 7,738 to fix my car which I don’t have both mechanics said the engine in those cars are no good and it’s been recalls on them just not my model it’s not right I’m out of a car and no way to work or no way for my kids to get around they have to ride in lyfts and ubers with strangers I feel like my car should be fixed because I did my part at keeping it up and I’m still out of car and frustrated due to the companies negligence!!.

The contact owns a 2020 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The contact stated that several unknown warning lights were illuminated. The contact was able to pull to the side of the road. The contact called a towing service to jumpstart the vehicle. The vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed that the crankshaft bearing failed due to foreign material in the engine and oil consumption. The contact was informed that the engine needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000.

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Vehicle make/model/year: Hyundai Tucson 2017 NHTSA: recall number 21v727000 description of problem: my vehicle is affected by a known safety recall related to the engine (likely recall campaign p1326 or similar, affecting Hyundai engines). I contacted the authorized Hyundai dealership to schedule the recall service. However, the dealership is requiring me to pay out-of-pocket for parts and/or tests — specifically, they mentioned charging for testing engine gaskets/joints — before confirming whether they will replace the engine under the recall. The recall notice clearly states that diagnosis, testing, and any necessary engine replacement should be done at no cost to the consumer. The dealership’s request for payment appears to be in violation of federal recall laws. I am being forced to delay this safety repair because I cannot afford these unexpected charges, which I believe are not allowed under NHTSA recall policies. This compromises my safety and could affect many other consumers in the same situation. Please investigate this dealership’s handling of the recall. I am requesting that Hyundai be held accountable for ensuring proper and legal recall service.

I took my car in for a daily oil change and inspection, where I learned that there was no oil is in my car after coming in 5k miles before as I have been religious about oil changes. I came in on Saturday September 20th for an inspection and was topped off with 3 quarts of oil but am now back in the shop Monday September 22nd to test the oil. The oil that was checked came out black.

I am submitting this formal safety complaint regarding my 2018 Hyundai Tucson. The vehicle has 101,900 miles and has been well maintained. Recently, it began experiencing severe performance issues, including difficulty accelerating and consuming oil at an abnormal rate. The dealership diagnosed the problem as a failed catalytic converter with an estimated repair cost of over $8,000. While Hyundai has an active recall on the engine for this model year, they have stated that my specific problem is not covered, despite the fact that the catalytic converter failure appears to be directly related to the engine defect. The oil consumption and acceleration issues raise serious safety concerns, as the vehicle can lose power unexpectedly while driving. I am a teacher, a parent, and have one child with special needs. I have no other form of transportation and am still making payments on a car I cannot safely drive. Hyundai’s refusal to address this issue as part of the known recall leaves me with an unsafe and inoperable vehicle through no fault of my own. I believe this matter warrants further investigation by the NHTSA, as it suggests that related component failures stemming from the defective engine are not being adequately addressed, leaving owners at financial and safety risk. I respectfully request that the NHTSA investigate whether Hyundai is failing to address a known defect’s full scope and to take appropriate action to ensure the safety and fair treatment of affected consumers. Thank you for your attention to this matter.

P012800 failure on thermostat for engine.

Battery management system failed safety-could not drive on interstate. Very unsafe. Dealer inspected problem afterwards. Warning lights appeared at time of problem. No warnings before. No signs of problem before it happened. Synopsis: after driving through a torrential thunderstorm on the interstate (06-13-25) and as we were getting ready to slow down for our exit on the interstate, we hit the brakes and our SUV gave us a warning. The warning said, "battery management system discharge". The SUV is a hybrid. At this point the SUV locked into e v mode. Our SUV would only go 10 mph which was very dangerous. It should be able to go up to 35 mph in e v mode and then past that, switch into gas mode. As stated, we could only go about 10 mph. We made it to our exit and found a spot to pull off the ramp. We let the SUV sit for a few moments and turned it off. We let it sit for a minute and then turned the car back on. The SUV when we turned it back on gave us a check engine light and still would not go over 10 mph. Luckily we were stopping for dinner. We were able to proceed to our destination. After dinner around an hour or so, when turned the vehicle back on, the SUV still gave us a check engine light. But was able to drive normally and switch between e v and gas modes. We made it home safely at the end of the weekend on 06-15-25. On 6-16-25 we took the SUV to be looked at by the dealer we purchased it from. Our phone app showed code dtc p0aa600. We gave the code to the staff. The staff inspected the SUV. The report stated, "customer states stopped driving and there code p0aa600 battery warning light npf could not duplicate problem. Tech scanned for codes code p0aa600 was found as a history code. Tech checked live data and everything came back within spec. Followed the flow chart procedure for the code. Check for bms isolation faults none found. Check 12volt battery. Battery is good". We drove it home and filed this report.

Was driving down busy road when engine suddenly knocked violently and shut off rendering car inoperable. Inspection revealed low oil, despite not being due for an oil change after and no visible/identifiable leaks. Investigation by mechanic resulted in being told that numerous Hyundai engines like this are having the same problems and need total engine replacements. The call only had 70,000. Dealership said they see one a week.

Engine has been burning through oil. Started the engine oil consumption test at one dealership. That dealership has now closed leaving me to go to another dealership. They want me to start the process over again. I have had two oil changes, failed the second test and was scheduled to bring my car back for the next step in the diagnostic process. Not only do they want me to pay out of pocket again for an oil change but my car is driving worse. It didn't start the other day and it drives horribly. The safety concern I have is that the engine will seize while driving, causing an accident.

On a busy highway, my car broke down. It was due to the rod bearings, specifically, the Hyundai theta "extended warranty"/recall issue, or "recall" issue. There is currently a class action lawsuit against Hyundai. I had the car towed to hallmark Hyundai in nashville, TN. I, however, live in louisville, ky and I was making a road trip to nashville, TN. I was told by the service rep in nashville that they couldn't provide me with a loaner vehicle because I would be driving it, back home, out of state to louisville, ky. I paid for a rental car out-of-pocket. Hyundai corporate told me it would take 60 days to get reimbursed. I picked up the car at the beginning of July, 2025, after the engine was replaced by hallmark Hyundai. I was told by hallmark Hyundai that a service employee performed a test drive but it was immediately noticeable to me that there were still issues. I noticed the gears shifting abnormally and problems with acceleration once I first started driving it, post repairs, but assumed I would be told to give it time. Today, [xxx], the car began to have difficulty accelerating once again, and the engine light illuminated. I couldn't accelerate beyond 45 mph. I phoned Hyundai corporate customer care, relayed the issues, and said I needed a rental car the following morning for a job pre-hire meeting and couldn't pay for one since my credit card was already maxed out due to the first out-of-pocket rental. They refused. They told me to work it out with my local Hyundai dealership. The problem with all of this is that the consumer still incurs many hardships even though the car manufacturer is at fault and the dealerships don't always follow the settlement requirements of providing alternate transportation, a loaner or rental. The manufacturer and dealers are not held accountable and settlements that purport consumer recourse are more geared towards the manufacturer staying in business than the consumer being compensated fairly. Information redacted pursuant to the freedom of information act (f.

This call actively has a recall on engine rods any Hyundai and some kia models ranging from 2011 all the way until 2022. They are known for having a faulty motor with active oil consumption and are currently facing several lawsuits and my car is one of these cars facing this issue however, the manufacturer doesn’t want to fully create a recall on the motor claims that are causing this rapid oil consumption issue I would like this to be investigated as well as it be investigative why you don’t already have their current active recall listed on your website . But if your website was correct and listed the engine, roddery call, and if my engine rod were to blow, then they would actually address this issue however, some people are getting this issue addressed under their manufacturer warranty however it is becoming extremely difficult because they want us to pay out-of-pocket for a pointless test as newer vehicles should not be burning oil with no active problems. Clearly, the states there is a problem which there is as of all the active lawsuits.

The engine experienced catastrophic failure. A piston punctured the engine block, likely due to failure of the connecting rods, an issue known to be associated with the recalled theta ii engine. The engine is still in the vehicle and available for inspection upon request. We were scared and felt seriously endangered during the incident. The engine failed suddenly while we were driving on a busy highway. After a loud clunk, the vehicle immediately lost acceleration and would not respond to throttle input. We had to quickly pull over onto the shoulder while traffic sped past us at high speeds. The sudden loss of power in fast-moving traffic put us at serious risk of being rear-ended or causing an accident. It was a frightening experience that could have resulted in injury or worse. An independent mechanic inspected the vehicle and confirmed there is a hole in the engine block caused by a piston. We brought the vehicle to a Hyundai dealership for further inspection. Still, their communication has been poor, and they have not yet confirmed whether they acknowledge the issue or its relation to the theta ii engine recall. Our independent mechanic has inspected the vehicle and is currently with a Hyundai dealership for inspection. It has not been checked by police or insurance representatives. No third-party inspector has been involved beyond the dealer and mechanic. There were no warning lights, error messages, noises, or performance symptoms before the failure. The engine failure was sudden and occurred without any prior indication of a problem.

See all problems of the 2014 Hyundai Tucson 🔎.

Misfire, excessive oil consumption, engine knocking, loss of power/acceleration, gas smell, excessive gas consumption.

My high pressure fuel injectors and spark plug had to be replaced at 72,000 miles. My check engine light came on and the car started vibrating and was not accelerating properly. I spoke to three Hyundai dealership service centers and each of them acknowledged that it was a known issue with 2022 Hyundai Tucsons.

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