Engine And Engine Cooling Problems of Hyundai Tucson - part 2

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.

See all problems of the 2018 Hyundai Tucson 🔎.

While driving on the highway with adaptive cruise control on, car began decelerating without any vehicle in front. Started to get off highway, check engine light began flashing and came to a full stop. Car died. Tried restarting and car died. Check engine, oil and battery lights then on. Total engine failure and no warning lights prior.

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The vehicle developed an intermittent but potentially dangerous engine control malfunction. After the engine reached normal operating temperature, the engine speed (rpm) would repeatedly surge while the vehicle was stopped in park and neutral, fluctuating from approximately 1,000 rpm to over 3,000 rpm without any throttle input from the driver. The condition occurred with the air conditioning turned off and could be reproduced multiple times. At approximately the same time, the auto start/stop system stopped functioning and displayed a warning indicator. A malfunction indicator lamp (check engine light) also appeared during the incident. The warning light later turned off, but the engine surging continued. This unexpected increase in engine speed raises concerns about unintended vehicle movement or loss of driver control if the condition were to occur while shifting into gear or while driving. The unpredictable nature of the malfunction presents a potential safety risk to the occupants of the vehicle and to others on the road. The vehicle has been taken to an authorized Hyundai dealership for diagnosis and repair and remains under inspection. The problem is available for inspection. During my research, I found numerous reports from other Hyundai owners describing similar engine surging, idle fluctuation, and auto start/stop malfunctions involving comparable vehicles. Because similar complaints appear to have been reported by multiple owners, I am submitting this report so the issue can be evaluated for a possible broader safety defect. I have videos of the incident.

See all problems of the 2023 Hyundai Tucson 🔎.

I was on the highway on the way to work when my car started stalling. Every time I pressed the gas to give it some power, it would not go anyway where. After getting it towed to get looked at some of the fuel injectors failed and were misfiring. The warning message about ‘check engine’ popped up 2 minutes before it happened. This is the third time now in less than 6 months.

Vehicle suddenly slipped into limp mode. Vehicle was then immediately taken to have code read. Code came back p1326. Was advised due to previous recall campaign(s) to contact Hyundai of America for guidance. Was told that vehicle needed to be confirmed per the bct at any Hyundai dealership to which the agent scheduled the appointment myself and that I should get the other 4 recalls fixed as well. My spouse drove the vehicle there and that was our last true communication verbally with Hyundai of America. Vehicle barely made it to the dealership and then spouse was offered a ride home an hour and a half later without paperwork or any type of understanding other than it would take time for the service team to get it on the bct. A week later I was told it would cost $250. We have argued that we were never told it would cost anything as it relates to this major recall nor the others and in fact it would be performed at zero cost. Then, a service manager stated that now the vehicle needed $10k worth of work and began having finance firms contact me that he said were employed by Hyundai but are not. Here we are a month later, and still no vehicle and we have contacted Hyundai of America numerous times and have all communications regarding such contact and have gotten nowhere. We have yet to actually speak to someone over the phone. We were assigned a case manager who is now on vacation. We're without an income now because after not having transportation to work my partner has lost his job, and we are in dire condition. Inside of my vehicle that this dealership is holding hostage is my infant’s car seat and a brand new catalytic converter. They have refused to communicate with me and supposedly with this case manager according to her emails. We are in need of help.

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Tried passing someone on the thruway, as I was about to the car jerked a bit then started decelerating. The check engine light started flashing and so did the oil light. Read the code as cylinder 3 misfire and a knock sensor. Changed the spark plugs and coil packs then checked the oil and saw there was no oil in the engine. Was told by my mechanic it’s a common problem with these Hyundai engines, it seems the rings are getting fried in the engine and that’s why it consumes oil so quickly.

While traveling northbound on [xxx] in florida traffic came to a stop, and when I stopped, my engine seized, I attempted to restart, but was unable to get a restart. My attempts to restart caused the starter to start burning smoke was coming from under the hood this put me at serious risk being on an interstate highway in the left lane at [xxx]. It was very difficult for me to push the car to the side of the road in this dangerous situation, recalling how harry chapin died in new york, because his car failed, and was struck by another vehicle. I was able to get the car onto the shoulder away from the moving traffic. The engine that seized is a 2. 0 gdi engine and that engine has been identified to have multiple failures and being replaced after failing . Hyundai sent a letter. I believe this engine should be recalled and replaced before others are put in the same dangerous situation. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2019 Hyundai Tucson 🔎.

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.

See attached document for complaint.

See all problems of the 2021 Hyundai Tucson 🔎.

While traveling on the highway the car began to lose speed rapidly until coming to a complete stop, no warning lights were present prior.

See all problems of the 2017 Hyundai Tucson 🔎.

I was driving down [xxx] from my house. My engine light started to flash. I tried to accelerate my car barely went 10 miles an hour. I got home 2 minutes later. There was major knocking. I had the car towed to [xxx], Hyundai, the only code that is showing up on the diagnostics, is p1326 there is an open class action lawsuit for this exact code. For the rod bearing failure, Hyundai is denying the claim, saying there's a gap in maintenance history on a car. I didn't own yet when I bought the vehicle. It passed a 190 point inspection. There's no way there was anything wrong with this vehicle. I am under fifty thousand miles , and if I was on the highway , it could've been deadly I could not accelerate. No other lights were on in the vehicle, except for the flashing engine light. I have already reported to the better business bureau and they have sent it to arbitration. I have contacted the escalation department for Hyundai. They opened up to separate cases. The agent that was assigned to me didn't even get the code from [xxx], they just denied the claim without it. I have the emails to prove that I had to give it to her. I have. \n all my maintenance history, but as you can see from the text message from xxx Hyundai, they are requesting maintenance for a car that wasn't in my possession yet. They're asking for dates from a year before I had the car, I bought it through echopark. I have everyone on my side including ffdelity , as I tried to go through fidelity and they said they couldn't approve the warranty because of the class action lawsuit against Hyundai for that exact manufacturer malfunction. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2021 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The check engine warning light was illuminated. The vehicle was driven to the shoulder of the road before being driven to the residence. The contact’s neighbor checked the oil level and informed the contact that the oil pan was empty. The oil level was topped off. The contact stated that the vehicle was not due for an oil change for another 200 miles. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was informed that there was no oil in the oil pan. The contact was informed to provide the vehicle service records. The contact stated that the failure was a manufacturer's failure. The manufacturer was made aware of the failure, and two cases were filed. The failure mileage was approximately 44,807.

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

Failed component: engine assembly / internal powertrain (specifically, a connecting rod bearing failure in cylinder #2 causing severe engine knocking and risk of mechanical seizure). The vehicle is available for inspection, the complete vehicle and affected engine assembly are intact and available for inspection upon request at cma's Hyundai of lexington park: [xxx] safety risk: a rod bearing failure causes violent engine knocking, severe loss of engine power, and eventual engine seizure or stalling while driving. Losing propulsion unexpectedly—especially at highway speeds or in heavy traffic—creates an immediate collision risk for the vehicle occupants and surrounding traffic due to sudden loss of power, power steering, and power brake assistance. The issue was formally diagnosed and confirmed by an authorized Hyundai dealership service department. The technician performed a physical diagnostic evaluation and officially documented a knocking condition resulting from a connecting rod bearing failure in cylinder #2. Symptoms & timeline: initial engine knocking noises first appeared on xxx. The vehicle was previously updated with Hyundai's knock sensor detection system (ksds) product improvement campaign, which is intended to detect excessive vibration from rod bearing wear prior to catastrophic failure. No check engine light illumination occurred or and type of indication from the vehicle there was something wrong other than the knocking noises. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Subject: urgent drivability concern – 2024 Hyundai Tucson (6/22 incident) vehicle: 2024 Hyundai Tucson date of incident: xxx trip details: [xxx] to [xxx] (~160+ miles) summary of issue: during a long-distance drive on xxx, the vehicle experienced severe and consistent drivability issues that created unsafe driving conditions. Symptoms observed: •severe loss of acceleration / stalling behavior throughout the entire trip •no check engine light illuminated at any time •when pressing the accelerator: otachometer increased (rpms rising) ovehicle speed decreased or failed to increase appropriately •significant delay in acceleration, especially when: omerging onto the interstate opassing other vehicles •cruise control behavior: oseemed to manage acceleration more effectively than manual throttle ohowever, still exhibited slow response when additional acceleration was required •auto start/stop system: osystem automatically disabled itself owould not allow reactivation during the trip safety concern: this condition made it difficult and unsafe •merge into traffic •maintain appropriate highway speeds •execute passing maneuvers dealer visit (near [xxx]): •vehicle was inspected after sitting for a couple of hours •dealer reported no issues found •however, the problem was persistent and clearly present during operation under driving conditions took vehicle to a dealership in raleigh and asked that they look at the fuel injectors. They determined that all 4 injectors were failing and replaced them under warranty. Concerned that Hyundai America has not issued a recall as driving the vehicle with this issue creates a serious safety concern that would lead to injury or loss of life information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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While driving on a us highway, the check engine light illuminated and the vehicle lost the ability to start/run normally, requiring the vehicle to be pulled off the road and towed to an authorized Hyundai dealership. Dealer diagnostic testing found the engine failed a bearing/performance test, consistent with connecting rod bearing wear. This failure mode — check engine light, dtc p1326, abnormal noise, or a no-crank/no-start condition caused by connecting rod bearing wear — is described in the manufacturer's own internal dealer service bulletin covering an engine warranty extension program for multiple engine families (theta ii mpi and nu gdi engines) across several model years and vehicle lines. That bulletin acknowledges the failure as a known condition and extends coverage to 15 years/150,000 miles for original and subsequent owners. The failure occurred suddenly and without warning while the vehicle was in active use on a highway, creating a stall/loss-of-power hazard in moving traffic — the vehicle could not be restarted at the roadside. The dealership's own multi-point inspection performed shortly after intake confirmed engine fluid levels and oil grade were within normal range, indicating the failure was not attributable to a lack of lubrication at the time of failure. Despite this, the manufacturer denied warranty coverage for the repair, citing an inability to produce maintenance receipts for a prior period, even though the dealership's own inspection findings do not support a maintenance-related cause. This report is submitted because of the safety hazard posed by unwarned loss of engine power/starting capability while driving, and because this failure pattern appears consistent with a defect the manufacturer has already acknowledged for closely related engine platforms, raising the question of whether additional vehicles with this engine design should be included in that existing warranty/defect campaign.

See all problems of the 2015 Hyundai Tucson 🔎.

The contact owns a 2017 Hyundai Tucson. The contact stated that while driving at 65 mph, the vehicle unexpectedly stalled and was unable to exceed 30 mph. The contact pulled the vehicle over to the shoulder of the road, and the vehicle failed to restart. The vehicle was towed to the dealer, where it was diagnosed that the transmission failed and oil contaminated the catalytic converter, causing the catalytic converter to fail and require replacement. The transmission was repaired by the dealer, and the catalytic converter was replaced by an independent repair facility. The contact subsequently observed continued oil loss following the repairs. The vehicle was returned to the dealer, where it was diagnosed that the exhaust manifold headers failed and required replacement. The vehicle was not repaired. The contact requested and received a complete diagnostic report from the dealer. The failure mileage was approximately 90,502.

-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.

The contact owns a 2016 Hyundai Tucson. While the contact’s daughter was driving approximately 55 mph, the vehicle started to lose motive power. The vehicle failed to restart immediately. The vehicle was started after a while; however, the check engine warning light was illuminated. The vehicle was taken to a goodyear service center to be diagnosed. The contact was informed that the engine had seized and needed to be repaired. The dealer was contacted. The manufacturer was not made aware of the failure. The failure mileage was approximately 119,479.

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I was driving on the highway going 65 mph and scared when the engine started clicking and shaking a tiny bit. Plus it was slowing down no matter what I did. Well in a 4 lane highway. There was no engine light, no previous issues. The car drove great until this issue. I had the car only 3 months. Now I am afraid to drive it because I had seen theres an engine recall online for my car. Once I saw the recalls I tried calling alot of my local Hyundai dealer ships and they denied me because of the mileage. When I bought the car it was at 180 mileage. At this point I am not sure what to do with the car, I am hoping it can get fixed.

See all problems of the 2013 Hyundai Tucson 🔎.

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.

I am reporting a serious safety issue involving diagnostic code p1326. My vehicle developed engine knocking and little to no acceleration and appeared to enter a reduced-power or limp-mode condition while driving. This made it difficult to merge, maintain speed, and travel safely in traffic, creating a risk of collision or becoming stranded in an unsafe location. Based on publicly available Hyundai materials, code p1326 is associated with the knock sensor detection system (ksds) and may indicate abnormal engine vibration, possible bearing-related engine damage, and reduced-power operation. Those materials also indicate that certain vehicles were eligible for software updates, inspection, and possible engine repair or replacement. I request that this issue be documented as a safety complaint and that the dealership perform a full diagnostic inspection, determine whether my vehicle qualifies for any applicable campaign or warranty extension, and provide appropriate repairs.

I am filing a safety complaint regarding my Hyundai vehicle after experiencing a sudden engine failure that appears consistent with known rod bearing and engine defects affecting certain Hyundai engines. While driving, my vehicle began making a knocking noise and shortly thereafter suffered catastrophic engine failure. The engine lost power and became inoperable, requiring the vehicle to be towed. This failure occurred without any prior indication that the engine was about to fail. My concern is that this type of engine failure creates a significant safety hazard because it can occur unexpectedly while driving, potentially causing a loss of power in traffic and increasing the risk of a crash. The dealership inspected the vehicle and engine but did not report excessive sludge buildup. I have provided available maintenance records showing that oil changes were performed during my ownership. Despite this, there appears to be disagreement regarding the cause of the failure. I am aware of reports involving rod bearing and engine failures in similar Hyundai vehicles and believe NHTSA should investigate whether this failure is related to a broader manufacturing or design defect. The cost of replacing the engine is substantial, and consumers may be placed at risk if these failures occur while vehicles are being operated on public roads. I am requesting that NHTSA review this issue and determine whether additional investigation, recalls, or other corrective actions are warranted. Vehicle information: year: 2017 make: Hyundai model: Tucson mileage at failure: approximately 72,000 miles date of failure: [xxx] VIN: [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The 2019 Tucson has 60,413 miles. My daughter drives it very low mileage - a couple of miles a day back and forth to school. Friday she was driving and the car lost engine power and it stopped driving. No warning lights. There was a cloud of smoke and it smelled like burning plastic. She was on a busy road but pulled over and quickly exited the vehicle. I had it towed and the mechanic says the engine oil was empty and the engine has seized. We do regularly scheduled oil changes. No lights or warnings and the car just stopped in traffic.

My 2022 Hyundai Tucson experience, a sudden transmission failure at approximately 92,520 miles. The vehicle develop shifting issues and abnormal noises before losing propulsión. While driving. Hyundai diagnosed and internal transmission failure and approved transmission replacement. I’m concerned about the sudden loss of proportion and the safety risk this creates. Hyundai proposed repair is to replace the transmission with a rebuild remanufacture transmission rather than a new transmission. I am concerned about the reliability of the repair following a complete transmission failure.

See all problems of the 2022 Hyundai Tucson 🔎.

2017 Hyundai Tucson | VIN: [xxx] | mileage: 75,000 I have owned this vehicle for approximately five years and have experienced severe excessive oil consumption for the past two to three years. The issue was first discovered when the vehicle entered protective mode due to critically low oil levels despite a routine oil change having been performed only a few months prior. I am currently required to add approximately one quart of oil every month to maintain safe operating levels. I visited an authorized Hyundai dealership to have an oil consumption test performed. The dealership informed me that if the test confirmed excessive consumption, I would be required to pay out of pocket for an engine replacement. I declined, as Hyundai motor America has publicly acknowledged this exact defect in the 2017 Tucson through NHTSA recall 21v727000, multiple technical service bulletins, and a class action settlement covering 2014-2021 Tucson vehicles with the nu 2. 0-liter gdi engine. My VIN was found ineligible on the class action settlement website despite the acknowledged defect. Hyundai has admitted this engine suffers from premature bearing wear, excessive oil consumption, and risk of engine failure and fire. I am requesting NHTSA investigate why my VIN falls outside current recall coverage despite presenting identical symptoms to affected vehicles. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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).

The vehicle severely shudders, jerks, and hesitates from a stop and while making a turn, during both acceleration and deceleration, making it entirely unsafe to drive. The vehicle has been completely un-driveable for the past 6 days. The check engine light illuminated, and on 4/9/26, the dealer documented a failed transmission judder test and kept the car, issuing a loaner. A temporary software patch failed after two weeks. Upon return, the dealer reported they were unable to recreate the problem, recommended returning when the vehicle demonstrates the problem more frequently, and refused to mechanically repair the dual-clutch transmission under my active original-owner 100,000-mile powertrain warranty, basically instructing me to continue to drive a seriously un-safe vehicle. Most recently, a yellow dashboard warning light illuminated, and the vehicle entered a dangerous 'limp mode,' severely restricting power and struggling to move before the light cleared after cooling down. The vehicle is completely un-driveable and parked.

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).

The engine (connecting rod bearings in the 2. 0l nu gdi engine) failed. The vehicle entered limp mode with dtc p1326, then died on the road and the engine seized completely (will not turn by hand when attempted; only clicks on starter). It is currently at first Hyundai dealer in [xxx], under repair order #xxxand available for inspection. The vehicle suddenly lost power and died while driving on the road. This created a significant risk of an accident or being stranded in traffic. I was on a busy highway and almost got hit twice. There is also a known fire risk associated with this exact defect (oil leaking onto hot engine components), as stated in recall 209 (NHTSA 21v727). The vehicle was towed to first Hyundai. They have documented the no-start/seized condition on repair order #xxx. A prior independent scanner reading showed p1326 before the code was cleared. The dealer has not performed the full diagnostic inspection (scheduled around June 11). Hyundai corporate (claim #xxx) has been notified but has not responded after multiple escalation emails. The vehicle first went into limp mode ("engine protection mode") with dtc p1326 on the scanner. Shortly after, the engine died completely and would not restart. This occurred after recall 209 (bearing/ksds campaign) was completed on xxx. Additional details: this is a known issue with premature connecting rod bearing wear. The dealer is refusing to provide a loaner/rental upon drop-off, which contradicts TSB 22-01-023h (dealer best practices for p1326 vehicles). The vehicle has been inoperable since 6/4 . . With no resolution. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2021 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the engine blew. No warning lights were illuminated. There was white smoke coming from the hood of the vehicle. The vehicle was towed to the dealer; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 7,800.

Oil consumption engine ticking hesitate to change gears poor acceleration.

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.

The engine is failing at 128,000 miles. The car is burning so much oil that it is impossible to drive more than 500 miles without the oil running dry. The problem has been inspected by the Hyundai dealership nearest me. The vehicle notified me of the oil issue by illuminating the oil light. The issue started after the turbo failed at 127,000 miles. The turbo was replaced at a cost $3,500 and immediately afterwards the vehicle which previously did not burn oil now does. It doesn't just burn oil it consumes it like a black hole.