general problems of the 2018 Hyundai Tucson - part 1

I took my Tucson to my local Hyundai dealership on Friday, August 28, 2026. It was there for a standard oil change and tire rotation. When I scheduled the appointment online the system also said there was a recall. I always stay on top of that so I let them take care of that as well. The recall didn’t seem like anything major, it was something to do with emissions. Ok, when I left the dealership that day the engine was warm so there was no noticeable difference. I didn’t use my vehicle at all for the next few days. When I got into it Monday morning for work I noticed immediately after starting the car and taking off the engine was hesitating and bucking. This lasted a few minutes. The problem seems to improve once the engine is warm but others are reporting online that they’re having issues with engines stalling as well. There’s something wrong with the software update that’s being used and no one seems to have a fix. I reached out to Hyundai with my concern and they recommended I take it back to the dealership to be diagnosed and see if my warranty would cover any repairs. My vehicle was free of problems before that update and now it’s falling back on me to pay for a potential problem they caused. There has been no accidents for me personally with this but it’s most definitely a safety hazard.

?on Thursday, August 6, 2026, while driving my 2018 Hyundai Tucson on interstate 81, the vehicle experienced sudden, severe engine vibration and a loud metallic ticking sound before losing power and stalling completely on the highway. I was stranded on the side of the highway in a high-speed traffic zone, creating an immediate and hazardous safety situation. ?because the vehicle was completely inoperable, I was forced to pay $200 out-of-pocket to have the vehicle towed 35 miles to the nearest authorized Hyundai dealership service center. ?upon arrival at the dealership, an on-site service technician performed an obd-ii diagnostic scan on the lot and confirmed diagnostic trouble code p1326 (engine knock sensor detection system / connecting rod bearing failure). Despite the technician confirming the presence of this critical safety defect, the dealership service desk explicitly refused to enter the diagnostic code into Hyundai’s corporate system, stating they would not process or submit the vehicle for inspection or warranty authorization for over a month. ?Hyundai motor America customer care was contacted immediately and witnessed the dealership’s refusal to log the safety defect. While corporate assigned a case manager, Hyundai and the dealership have continually stalled the intake process under service campaign 966 / t6g and refused to provide direct-bill rental transportation or loaner support while the car sits disabled on the dealer lot. ?as a direct result of this sudden highway engine failure, the manufacturer's failure to address a known safety defect, and the refusal to provide recall mobility support, I have suffered ongoing financial loss, out-of-pocket towing expenses, and forced leave from employment. I am filing this report to document the hazardous highway failure of code p1326 and the refusal of the manufacturer and dealer to process a critical safety recall intake in a timely manner. My husband is the registered owner but I am the driver.

My 2018 Hyundai Tucson with the 2. 0l engine has suffered catastrophic engine failure. The engine lost compression in cylinder 4 and now requires a full replacement . This is part of a broader pattern—the 2016–2018 Tucson is known for excessive oil consumption that leads to engine failure, with over 1,900 engine-related complaints filed with NHTSA across these model years . Prior to this failure, I reported excessive oil consumption and other engine issues to my dealership. Despite these reports, the problem was not resolved, and I was given inadequate guidance on how to address it. The engine ultimately failed while I was driving, creating a sudden loss of power that posed a safety risk. Other Hyundai Tucson vehicles with the same engine have been covered by recalls for related engine defects , but my specific VIN was not included, despite exhibiting identical symptoms. Meanwhile, other owners report that similar engine failures have been dismissed or denied coverage by Hyundai . This inconsistency in how the manufacturer handles a known, widespread defect is what prompted me to file this complaint.

I own a Hyundai Tucson 2018 sel plus. My problem is my vehicle is coming to the end of it's 100,000 mile warranty. This vehicle started burning oil about 30,000 miles and it got worse. I checked on recalls and there was no recalls for my VIN number for this vehicle. My Hyundai vehicle is burning a quart of oil every 300 miles and this is no exaggeration. I bought the car brand new and had to replace my 1st catalytic converter at 79,627 miles on 5/14/25 that was originally on the car. The second catalytic converter that I had put on I, had to replace that catalytic converter again at my cost at approximately $900. 00 and then after that it plugged up again at 91,928 miles on 7/28/26 and I, had to replace that one that is the third one now. The catalytic converter company had warranted the work and the converter to be installed. This has caused the car to not only misfire, but become a possible road hazard to miss enough and possibly cause it to stall or reduce the power output of the vehicle while in operation and on public roads in traffic and possibly create a major accident on the freeway. This is a major saftey concern being that you could not only lose power while in motion but could lock up the engine. We talked to mechanics, other people that own them and even the service guys at Hyundai knew it is problem. The service genteman said that they would clean the valves I, believe they talked about cleaning the valves with walnuts like sand blasting and I, told him cleaning the valves is not going to do anything for the oil consumption, because the oil consumption is the engine. The engine when it was originally made on the number 3 cyclinder was bored wrong. That is our problem because the oil rings and rings are letting the oil bypass the piston and filing out the iriadium spark plug and our car mileage has gone down because of this the rings are wearing faster and causing us to keep buying newer spark plugs. " check engine light flashes " plugged cat converter.

2018 Hyundai Tucson catastrophic engine failure consistent with known Hyundai nu engine defect pattern documented across 141 prior owner-filed NHTSA complaints for this same vehicle. Obd codes p0326, p0301, p0302, p0303, p0304 documented July 19–25, 2026. Independent licensed mechanic confirmed in writing that engine requires replacement. Authorized Hyundai dealership service manager verbally confirmed coolant in oil — the exact failure mode documented in prior NHTSA complaints for this vehicle generation. Service campaign 966/ksds was completed and active when failure occurred and did not prevent it. Hyundai motor America denied goodwill claim case #43120457 citing out-of-warranty status and aftermarket parts — no written test results or inspection report has been produced to this household. Requesting federal investigation into pattern of engine failures in 2018 Hyundai Tucson consistent with acknowledged nu engine defects.

Incident summary: on 07/16/2026, my 2018 Hyundai Tucson experienced a severe engine failure resulting in sudden knocking sound from engine and stopped in middle of road. This sudden failure while operating the vehicle created an immediate safety risk on the roadway. ?the vehicle was taken to rick case Hyundai on 07/22/2026 , where diagnostics confirmed on 07/24/2026 internal engine damage tied to connecting rod bearing wear—a known, widespread safety hazard affecting Hyundai 2. 0l nu gdi engines. ?reason for complaint: Hyundai motor America denied warranty coverage and engine replacement, claiming that service campaign 966 / knock sensor detection system (ksds) software had not been installed prior to the failure. ?the ksds update is a software monitoring/warning tool, not a mechanical fix or routine maintenance requirement. Missing a software patch does not cause physical connecting rod bearing failure. Hyundai is using missing software updates to systematically deny coverage for known, dangerous engine defects. ?I am reporting this incident because sudden engine stalling on public roads poses a severe crash hazard, and Hyundai should not be permitted to avoid addressing safety-critical mechanical failures based on procedural software campaign exclusions.

The engine has been consuming oil, where we were adding at least a quart of oil between oil changes. We noticed the vehicle would shake like it was going to die while idling at a stop light or in a drive through. Recently my husband was driving home from work on a busy highway and the vehicles check engine light started blinking on and off. He pulled over and had the vehicle towed. The oil consumption made the vehicle throw a rod and damage the engine. Now we are needing to replace the engine.

Car shaking, oil is burning , and drive hard. Engine and, oil light is now appearing.

-very high oil consumption. Going through a little over a quart very 900-1000 miles. Has a gdi turbo engine. -transmission issues. Has a dual clutch transmission that slips.

My engine is consuming an excessive amount of oil due to a known issue with the Hyundai engine design impacting cars from 2011-2018. My car only had approximately 89,900 miles on it when I noticed the issues. Hyundai is aware of the defect and has re-engineered their engines due to the issue. The engine is available for inspection upon request. My safety and the safety of others is put at risk every time I drive. By denying my claim, I am forced to repeatedly top off my oil to maintain levels and try to drive as safely as possible, however my car is at risk of engine failure due to the consumption. I have escalated these concerns to Hyundai and I was still denied. The problem was confirmed by a Hyundai dealer. The denial stems from Hyundai’s policy that it must be consuming greater than 1 quart for every 1,000 miles driven. However, my car is still consuming oil and it is incredibly unsafe. The engine was inspected by qualified Hyundai mechanics. The consumption issue was documented in their paperwork. The oil light would intermittently flicker while I drove, which had never happen before. Additionally, the car began to drive rough and I recognized something was likely wrong with the car. Unwilling to take any safety risks, I immediately scheduled an appointment with the dealership to determine the issue.

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving approximately 65 mph, there was a knocking sound coming from the engine compartment, and the vehicle started shaking aggressively. The brake pedal was depressed; however, the vehicle failed to respond as needed, and the vehicle lost power steering functionality. The vehicle was coasted to the side of the road, and the parking brake was engaged. The vehicle stalled and was towed to the nearest gas station. The vehicle failed to start and was towed to the residence. The failure mileage was approximately 164,000.

While idling at a standstill (in a drive-thru queue), my 2018 Hyundai Tucson suddenly experienced a severe engine overheat, causing the vehicle's air conditioning system to immediately blow hot air and shut down. The vehicle was brought directly to an authorized Hyundai dealership (chapman Hyundai on [xxx]) for an emergency inspection. The dealership's certified technicians confirmed that the electric engine cooling fan assembly completely failed and subsequently caused the main front wiring harness and fuse box to physically melt. The dealership documented this catastrophic electrical and thermal meltdown under repair order #xxx. This is a critical safety defect. A melted engine wiring harness poses an immediate and severe risk of an electrical short circuit, sudden vehicle stalling in live traffic, or a catastrophic under-hood engine fire. Because this component controls the primary cooling of the powertrain, its failure creates an extreme hazard to the vehicle occupants and surrounding traffic. Hyundai must investigate this component failure before it results in a thermal fire incident or an accident due to sudden power loss. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On June 5, 2026, driver was on i25, when driver heard engine making a winding and weird noise. Vehicle immediately went from 60 mph to 40 mph. It was extremely dangerous and driver barely evaded a collusion with several other vehicles. A check oil and engine light came on. Towed back to same Hyundai dealership. They claim engine needs replaced and needs maintenance kit. Total cost $16,892. 87. Note: prior to, in January 2026 the transmission and differential were replaced. Was told there were no other issues (same Hyundai dealership).

While driving my 2018 Hyundai Tucson limited 1. 6l turbo with the 7-speed ecoshift dual clutch transmission (dct), the vehicle has repeatedly failed to engage and hold gears, resulting in loss of motive power in traffic. Diagnostic scanning retrieved codes p074b (unable to engage gear 3), p074b71 (unable to select 3rd gear), p074b07 (gear dropped out of 3rd gear), p092177 (1st gear system referencing failure), and p0921 (gear shift forward actuator circuit range/performance). A Hyundai dealer diagnosed the failure as requiring transmission replacement at approximately 93,000 miles. This is the same 7-speed dct and the same failure mode addressed by NHTSA campaign 16v628000 (Hyundai recall 149) and Hyundai service campaign t1b, which covered 2016–2017 Tucson vehicles but excluded the 2018 model year despite using the same transmission. Hyundai has acknowledged this defect in 2018 vehicles through TSB 21-at-014h and TSB 22-at-007h, which prescribe a tcu software update, but issued these as service bulletins rather than a recall, so owners were never notified. When I requested the TSB software update, the Hyundai dealer refused to perform it. This defect creates a serious safety hazard: the vehicle can drop out of gear or fail to accelerate without warning while in traffic, increasing the risk of a crash — the identical hazard NHTSA cited in granting recall 16v628000. I request that NHTSA review whether the existing recall scope should be expanded to include 2018 Tucson vehicles.

Unknown -a catalytic converter clogged after being installed - only 14 months following installation, causing rough and unsafe acceleration, inability to shift gears properly, and need to drive with hazards on. It is clear that there is an issue with the engine/exhaust and system in this vehicle. Additionally, the car needs oil added regularly and seems to be burning it, as indicated by low level.

While operating the vehicle on the highway at speeds around 55 to 60 mph, without warning, the engine suffered a sudden, catastrophic internal mechanical engine failure that resulted in an immediate and complete loss of motive power, rendering the vehicle entirely undriveable. The vehicle was towed to an authorized Hyundai dealership for a formal tear-down and diagnosis. They Hyundai dealership technician formally diagnosed the issue as a catastrophic internal "pin failure" (structural failure of an internal engine pin component). This component defect caused a total mechanical breakdown of the engine assembly. Hyundai motor America has issued a corporate warranty denial for an engine replacement, despite the vehicle being covered under the Hyundai engine ii class action settlement (which extends powertrain protections due to widespread internal engine manufacturing defects), a sudden, un-warned loss of engine power while driving poses a severe and immediate safety hazard to the driver, passengers and other motorists on the highway. Hyundai's refusal to remedy this known structural defect leaves a dangerous vehicle un-repaired. I am requesting an investigation into Hyundai's denial of coverage for structural engine component failures on the 2. 0l nu engine platform.

Approximately one month ago I had a high pressure fuel pump installed in my 2018 Hyundai Tucson. While driving on the highway, about ten minutes from home, my car suddenly burst into flames. There were no warning lights in the cockpit. There was no smoke in the cabin. Another motorist flagged me down. I got out of the vehicle just in time for it to become fully engulfed in flame. It burned down on the highway. Police and fire responded. Insurance is investigating. If I was inside the vehicle, I would have certainly died.

The oil consumption issue has begun. At about 75k miles, my 2018 Hyundai Tucson 1. 6l turbo is burning oil at an insane rate. And there is no indicator of it occurring (no codes or anything on the dash) until it's too late. Hyundai is now well known, and aware, for this problem and it is a catastrophic safety issue because of the possibility of the engine seizing and disabling the vehicle. It isn't negligence on the consumers part either, especially when timely and consistent oil changes are being done. *note* my vehicle has had the transmission (6 speed dual clutch) replaced at around 30k miles and is having the same issue again (at 75k miles). So first the transmission and now the engine!.

The 2. 0l engine catastrophically failed during normal highway driving, consistent with a thrown connecting rod. The vehicle suddenly lost power on a roadway with tractor-trailer traffic. The driver and a child passenger narrowly avoided being struck by a semi-truck before the vehicle could be brought to a safe stop. No prior warning lamps, no check engine light, no abnormal noises, and no indications of any kind preceded the failure. The failed engine is currently at a Hyundai dealership and is available for inspection. The dealer has confirmed catastrophic engine failure and submitted an engine replacement request to Hyundai motor America. Hyundai motor America declined the engine replacement request, citing incomplete status on service campaign 966 (knock sensor detection system update for connecting rod bearing wear). The owner purchased the vehicle used and was never notified by Hyundai of service campaign 966. The owner also was never notified of NHTSA recall 20v543000 (abs module fire risk), which remains open and unrepaired on this vehicle, demonstrating a pattern of failed manufacturer notification to the current registered owner. This vehicle is a class vehicle in the Hyundai/kia theta ii engine class action settlement (in Hyundai and kia engine litigation), which extended powertrain coverage to a lifetime warranty for connecting rod bearing failure on 2018 Tucson vehicles equipped with the theta ii 2. 0l engine. The failure mode experienced is precisely the defect this settlement and campaign 966 were designed to address. Component that failed: engine, specifically connecting rod bearing/short block assembly. Component is available for inspection. Vehicle has approximately 71,000 miles. The failure created an immediate and severe risk of fatal collision involving a child passenger. Manufacturer has been contacted and has denied warranty coverage. Nhtsa action is requested regarding both the engine defect denial pattern and the unrepaired abs fire-ri.

I bought this car 6 months ago. I did not know it had a recall on the engine. The engine just died a week ago. I brought it to Hyundai and the confirmed it was a recall and go ahold of corporate. Corporate is refusing to fix the recall because they said "I should have brought it in at the original recall in 2020. " I did not own the car there and I was not aware of the recall at all. [xxx] is my husband he is the other owner of the car. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

This complaint involves a catastrophic engine failure in a 2018 Hyundai Tucson that appears to be part of a broader pattern of similar failures reported by other owners. Prior to failure, the vehicle exhibited excessive oil consumption and progressive engine performance issues. These symptoms have been widely reported by other consumers with the same vehicle, suggesting a systemic defect rather than an isolated incident. The engine failed completely while the vehicle was being driven to a mechanic for evaluation. The vehicle experienced sudden loss of power and shut down in the middle of an active intersection, creating a significant safety hazard and risk of collision or fatality. Online consumer reports, forums, and complaints indicate that many 2018 Hyundai Tucson vehicles experience similar symptoms—specifically excessive oil consumption followed by engine failure. Despite this apparent pattern, no comprehensive recall or sufficient consumer warning has been issued. The manufacturer has refused to provide assistance, citing warranty limitations, which raises concerns that known defects are not being addressed and unsafe vehicles remain in operation. This issue presents a serious safety risk due to sudden and unexpected loss of engine power while driving. I am requesting that NHTSA evaluate this as a potential widespread defect and initiate a formal investigation that could lead to a recall to protect consumers.

I have experienced two near-fatal incidents involving a sudden, uncommanded loss of motive power while traveling at highway speeds (approx. 70 mph). On February 11, 2026, the vehicle entered "limp home mode" without warning, dropping speed to 60 mph and 2000 rpm in heavy traffic. This caused an immediate and dangerous speed differential, nearly resulting in a high-speed rear-end collision. Simultaneously, the ac system disabled, indicating a severe engine protection event. Manufacturer negligence: the vehicle was taken to courtesy Hyundai of tampa twice for this issue (code p0087). They performed a "knock sensor" replacement and cleared data points, assuring me the vehicle was safe. The failure recurred immediately. I subsequently took the vehicle to brandon Hyundai on February 13, 2026. Despite my reports of near-fatal highway failures, brandon Hyundai was instructed by Hyundai corporate to merely repeat the "knock sensor" replacement—a repair that had already failed to resolve the dangerous condition. Critical safety admission: on 02/23/2026, brandon Hyundai service advisor abel gomez explicitly admitted that this repair is "not a fix, it is a temporary thing until it shows again," yet stated they must follow corporate’s directive to release the car. Requested action: Hyundai is knowingly releasing a vehicle with a recurring, life-threatening defect (p0087/sudden power loss) by performing "band-aid" sensor swaps instead of addressing the high-pressure fuel system or internal engine failure. This practice is a direct violation of the safety act. I request an immediate investigation into Hyundai’s refusal to perform permanent repairs on gdi engines displaying these catastrophic failure codes.

I am writing this letter to formally document a series of catastrophic safety failures and gross negligence regarding my 2018 Hyundai Tucson. On two separate occasions, including as recently as Wednesday, February 11, 2026, I narrowly escaped a fatal high-speed collision because this vehicle entered "engine protection mode" while traveling at highway speeds. Incident timeline: previous service: I have visited courtesy Hyundai of tampa twice for engine-related symptoms and code p0087. They replaced the knock sensor and assured me the vehicle was safe. Safety incident (Feb 11, 2026): while driving on the highway, the vehicle suddenly lost power, dropping to 60mph and 2000 rpm (limp mode) in heavy traffic. This sudden deceleration nearly caused a high-speed rear-end collision. Current status: the vehicle is currently at brandon Hyundai (as of Feb 13, 2026). I have been told a review will take 3-5 business days, leaving me without safe transportation or a loaner vehicle. Negligence and liability: courtesy Hyundai of tampa was aware of the recurring p0087 code and engine performance issues. By clearing codes or replacing minor sensors (knock sensor) without addressing the underlying high-pressure fuel or internal engine failure, they released a dangerous, defective product onto the road. This vehicle is clearly covered under the theta ii gdi engine settlement and service campaign 966. The local dealerships are willfully avoiding a necessary engine replacement to save on internal costs, despite knowing the vehicle is prone to sudden failure. Demand for action: immediate loaner vehicle: I require a safe rental/loaner vehicle immediately, paid for by Hyundai, while my car is being inspected. Full engine replacement: I am demanding a full engine replacement as previously indicated by technicians should the light return. Expedited review: I am extremely unsatisfied to be told again I have to wait "3-5 business days" for a safety-critical evaluation of a vehicle that has alre.

My 2018 Hyundai Tucson experienced sudden catastrophic engine failure when a connecting rod threw while driving. The engine burned through its oil and the vehicle became inoperable. Hyundai denied warranty coverage for this engine failure because I had not completed the 2021 ksds (knock sensor detection system) recall. I was never notified of this recall. The ksds recall is a software update intended to detect engine knock. It does not prevent mechanical engine failure. Denying warranty coverage due to a software update that I was unaware of raises safety concerns, as engine failure can occur suddenly while driving and creates risk of crash or injury. This appears related to known engine issues in Hyundai vehicles. I am concerned this is a broader safety defect affecting other consumers.

While driving on a public road, the vehicle experienced multiple simultaneous, dangerous malfunctions: dashboard warnings: all lights illuminated, including engine (flashing), abs, traction control, airbag, tpms, and parking brake, which stayed on though disengaged. Engine & transmission: tachometer fluctuated wildly in park; engine revved without accelerator input. Shifting to drive/reverse caused unexpected “kicks. ” vehicle sometimes failed to move when pressing gas, requiring engine restart. Driving issues: speedometer read 0 or jumped inconsistently. Rpm continued erratically while maintaining speed without accelerator. Steering became extremely difficult. I immediately determined the vehicle was unsafe to drive and returned home with it, which was only a couple miles away. Follow-Hyundai advised dealership diagnosis; they suggested a backup camera module will resolve the issues I experienced in entirety, but also in the same email stated that they could not guarantee it would resolve all of the issues I experienced. This is the second major engine/powertrain failure: first approximately ~70,000 miles (full engine replacement), current approximately ~95,000 miles (approximately ~25,000 miles post-replacement). Recurrence indicates a serious, unresolved safety defect. I am deeply concerned for passenger safety, including children. Other owners report similar issues; the attorney general’s office advised reporting to NHTSA. Summary of safety risks: sudden loss of control/power, erratic acceleration, dashboard failures, steering resistance, unpredictable handling, recurrence of major defect. I am submitting this report to NHTSA to request investigation of these recurring defects. I do have video documentation of all of this, as well as all written communication with Hyundai national consumer affairs and the dealership. I am having a hard time uploading them because of the file limits. Please let me know if any of this will be helpful to you.

The engine is burning excessive oil. Down 3 quarts over approx. 3,000 miles. Mechanic verified there are no leaks - it is burning the oil.

My car had a lot of trouble accelerating it’s delayed.

Oil consumption, will change oil and within weeks I will be down 23 quarts of oil.

The engine on this vehicle burns oil quickly which is a known defect. I took the vehicle to the dealership and both times I was told everything was working fine. On 12/5/2025 the vehicle just lost power while driving. After getting the vehicle towed to a mechanic they said I needed a new engine.

The car began making a knocking sound on my 5. 8 mile drive. On my drive home from work, the knocking was louder, and the car barely accelerated on the highway and over-revved trying to hit at least 50 mph to keep up with the flow of traffic. I took the car to the Hyundai service center immediately using city streets rather than the highway. I had a family member follow me to make sure I made it to the service center as well as give me a ride home after I dropped off the vehicle. As I was driving there, the car had a hard time accelerating from a stop and barely maintaining speed of the flow of traffic and the “check engine” light came on and flashed as I got closer to the dealer service center. The dealer service center confirmed that the engine needs to be replaced due to the connecting rod bearing failure, a common issue with the 2. 0l i4 f dohc 16 v engine in my 2018 Hyundai Tucson. The Hyundai service manager has repeatedly confirmed that the engine issues presented in my car are consistent with a recall for the same model engine found in my car.

The engine and engine management system of my 2018 Hyundai Tucson experienced repeated failures resulting in loss of propulsion and unsafe drivability. In November 2025, while traveling approximately 75 mph on a freeway, the vehicle suddenly entered limp mode without any prior warning, causing an abrupt loss of power in active highway traffic. No warning lamps or messages appeared before the failure. After the loss of propulsion occurred, the check engine light, battery light, and oil light illuminated sequentially. Diagnostic trouble codes p1326 and p0326 were recorded. Initial inspection indicated severe oil consumption despite a recent oil change less than 2,000 miles earlier. A Hyundai dealership replaced knock sensors under warranty. Shortly after release (30 miles), the vehicle again exhibited severe drivability issues, including a flashing check engine light, and required immediate towing. A second Hyundai dealership replaced the short engine block under warranty. Approximately 180 miles after the engine replacement, the vehicle again developed unsafe drivability symptoms, including delayed throttle response, failure to accelerate unless the accelerator was fully depressed multiple times, jerking or lugging when slowing or stopped, and a faint whining noise. The check engine light illuminated again. These failures represent repeated loss of propulsion and unsafe operation following manufacturer-approved repairs, including full engine replacement. The vehicle has been out of service for approximately 57 days and remains in the custody of a Hyundai dealership awaiting diagnostics. The vehicle is available for inspection upon request. The sudden and unpredictable loss of power at highway speed created a significant risk of collision and serious injury to the driver and surrounding motorists.

My car on the expressway wouldn't go over 40 and this was happening intermittently so my car was unsafe. No check engine light but it was just at the dealership for an oil change. Has. Been an ongoing problem since I bought the car! smells, gets hot!.

My 2018 Hyundai Tucson experienced repeated no-start conditions. The vehicle was initially diagnosed by randy wise Hyundai in flint, michigan, and I paid approximately $776 for tune-up services that did not resolve the issue. Shortly afterward, the vehicle continued to fail to start. The dealership later determined the starter had failed and provided an estimate of approximately $985 for replacement. Hyundai motor America denied goodwill assistance and reimbursement for the prior misdiagnosed repair and stated the starter replacement is customer-pay. The vehicle’s inability to start caused loss of reliable transportation and safety concerns due to being stranded. I am submitting this complaint to document starter failure and potential diagnostic issues affecting vehicle safety.

My 2018 Hyundai Tucson experienced complete engine failure at around 118,000 miles. The motor suddenly blew without warning. This vehicle uses an engine type known for widespread engine defects, including bearing wear and internal failure. I bought the vehicle used in 2023, maintained it regularly, and there were no warning lights or overheating before the failure. I had to put oil in my vehicle every week. I had to use 5qts of oil. It smelled like fumes coming through the vents. It then stalled on the highway while we had our son in the vehicle and shaked profusely. Mind you we had our son in the vehicle. How unsafe is that. I then did my research and found out Hyundai engines of this generation have a history of stalling, seizing, and internal damage. I am filing this complaint because this appears to be part of a known safety defect that can cause sudden loss of power while driving. We took it to shop and confirmed the motor blew. It was faulty. Also, sometimes the electrical components would turn off in vehicle such as radio and would go black. Also the turn signal would be on and then turn off. It would also shake while driving. This needs to be taken care of ASAP as it almost caused danger to my family and also caused financial strain on my family too as I now had to roll over my vehicle loan into a new safe vehicle. I would like to be contacted in regards to this. Thank you.

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving at various speeds, the vehicle almost stalled. The contact stated that the check engine warning light illuminated and was flashing off and on. The accelerator pedal was depressed; however, the vehicle failed to respond as needed. The contact pulled over to the side of the road, and the vehicle remained running. The contact waited for a while and then shifted to drive(d) and was unable to accelerate above 30 mph. The contact stated that the failure was a recurring failure. The vehicle was taken to a parts store and was scanned, and dtc: p1326 was retrieved. The contact had not taken the vehicle to a dealer or to an independent mechanic. The vehicle was not diagnosed or repaired. The contact was no longer driving the vehicle. The manufacturer was not informed of the failure. The failure mileage was approximately 102,000.