general problems of the 2018 Hyundai Tucson - part 2

My connecting rod came apart and went through the oil pan while I was on the highway. There were no engine or oil lights until the engine was already smoking and no longer accelerating luckily I was in the far right lane already and was able. To coast to safety. Hyundai is also refusing to honor my warranty. It requires a completely new engine. So this was a catastrophic engine failure with no warning.

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.

Won’t shift so that I can gain speed.

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.

Component: engine vehicle: 2018 Hyundai Tucson VIN: [xxx] approx. Mileage at failure: 79,413 miles incident date: [xxx] where it happened: while driving [xxx] at 79,413 miles, my 2018 Hyundai Tucson (VIN: [xxx}) suffered complete engine failure without warning. The vehicle had been properly maintained (records from express oil change & tire engineers), and was operating under normal conditions. The dealership diagnosed total engine failure and quoted $7,723. 88 for replacement. They are not replacing the engine with the same type, which may indicate a known issue. There are no active recalls, but similar engines in Hyundai vehicles from this era have been subject to recalls and warranty extensions. I believe this may be due to a manufacturing defect. No injuries occurred, but the failure posed a safety risk while in traffic. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Since I purchased the car in 2018 I took great care of it, keeping the services going on time. But recently in October 2024 even tough I did services the oil service’s sign keep on showing up. I then schedule an appointment with a dealer ship near my area in January and they told me that they were no oil in the car. But I show them the date ans mileage on my stickers I specified that is the reason I am here and to double check for me for filtration because something is wrong, they told me that the car was fine. Days after I had to go in my regular service place for another service and on may I drove the car from massachusetts to new york and in the middle of the way car start shaking, making noise and when I drove it to a shop they diagnose a failed engine. I left the car in goshen NY in a Hyundai dealer ship and they told me a valve un the engine was burned and that where the problem came from . They said , they fixed it. A friend pick up the car and 30 mnt driving it police came to rescinde her in the highway, they then told me that’s it’s was a failed engine and days after ask for services record, I provide the last 6 times , they asked me from 0 until today. The shop were I take care of the car don’t keep record from so long. Talking about 2018. They said they won’t fixed it without those record . The car is still under warranty with 71321 miles and I have it for 7 years.

I noticed my vehicle was burning through oil, initially indicated by a p011 code, when I called Hyundai they said its often a symptom related to low oil pressure. After oil changes, the code would clear, but it returned multiple times, and on two occasions, the dipstick showed no oil when checked. Despite staying current on oil changes and maintenance, I was dismissed as excessive oil burning being “common” for this engine. After recent recall updates at the dealership, a technician confirmed excessive carbon buildup and that my catalytic converter was beginning to plug. I inquired about an extended warranty offered due to the knock sensor installation but was told it only covers rod bearing failure. Hyundai corporate echoed this, stating no coverage until catastrophic engine failure occurs, despite the ongoing damage from oil burning and converter clogging. Since my visit to the Hyundai dealership, the symptoms have rapidly escalated. Now, my vehicle is extremely loud and acceleration is poor. It takes a long time to get up to speed, and I worry about driving it as it may result in an accident.

While starting and accelerating my 2018 Hyundai Tucson, I began hearing abnormal engine knocking and noticed rough performance. I took the vehicle to an authorized Hyundai dealership, where they diagnosed an internal engine defect. They confirmed the engine issue but refused to cover the repair, citing that I’m not the original owner—despite public information stating that Hyundai’s extended engine defect warranty (related to known bearing failures) applies to all owners for up to 15 years/150,000 miles. This creates a major safety concern, as I drive long distances on highways daily and fear the engine may seize or fail at high speeds. The vehicle remains at the dealership and is currently undrivable. I’ve submitted proper maintenance records, and the issue has been escalated through Hyundai consumer affairs and the better business bureau. This appears to be a widely reported engine defect that Hyundai is not consistently addressing. The lack of coverage and delay in resolution places drivers at unnecessary risk.

The oil sensor doesn't illuminate the light on the dash when the oil level becomes low. The only warning is when it becomes really low and then the check engine light will appear. It's a safety concern due to the engine possible failure and or damage may occur at that point if continuing driving happens. This causing the engine to stall and loss of control of the vehicle. Which could lead to a vehicle crash resulting in injury or death to the occupants and or others nearby.

The contact owns a 2018 Hyundai Tucson. The contact stated while driving 70 mph and depressing accelerator pedal, the vehicle started to decelerate. The contact pulled over to the right side of the road and turned off the vehicle. The contact waited for two minutes and attempted to restart the vehicle; however, the vehicle failed to respond as needed. The brake warning light was illuminated. The vehicle was towed to an independent mechanic where it was diagnosed with a misfire in cylinders #1 and #2. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA campaign number: 20v543000 (service brakes, hydraulic); however, the VIN was not included. The manufacturer was notified not notified of the failure. The failure mileage was 177,000.

Evidence package for dealer fraud: demand letter, sms threats, sales contract, diagnostic report. Catalytic converter failure caused by chronic oil overfill (2+ quarts excess). Symptoms: - loud whistling noise from exhaust - severe power loss (unable to reach 60 mph) - check engine light activation (codes p0011/p000a) safety risks: 1. Stalling hazard at highway speeds 2. Fire risk from clogged converter 3. Engine seizure due to oil contamination confirmed by Hyundai dealer (evansville, in) on [xxx] - one day after purchase. Defect existed pre-sale: - dealer admitted exhaust issue in writing: "probably will be in the exhaust" - formal demand letter documented hidden defects on 04/28/2025 - vehicle returned to dealer on 04/24/2025 where it remains evidence confirms fraud: - diagnostic report shows pre-existing conditions - dealer demanded $300 to release vehicle, then $900 for repairs - "as-is" claim invalid due to defect concealment warning signs appeared immediately post-purchase. Vehicle available for inspection. Legal violations: - clean air act (emissions warranty breach) - krs 367. 110 (deceptive acts) - ftc used car rule (undisclosed defects) information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I am filing a complaint under the nc unfair and deceptive trade practices act (n. C. Gen. Stat. § 75-1. 1) regarding Hyundai’s handling of my 2018 Hyundai Tucson (purchased new may 2018). Since 2019, the vehicle has had repeated headlight failures (at least 12 bulb replacements), persistent “bulb out” warnings, and eventually melted wiring requiring headlamp assembly replacement in 2025. These issues were first reported in April 2023 under warranty but dismissed as “could not duplicate. ” Hyundai later attempted to deny coverage, only replacing the assembly after escalation to corporate. At the April 2023 visit, I also reported a rear noise that Hyundai dismissed. After warranty expiration, it was attributed to a leaking shock. Shocks were covered under warranty; failure to act while coverage was active left me unprotected. In may 2023, the engine failed due to oil loss and lock-up. Hyundai retained my vehicle from 5/15–6/30/23 for engine replacement. From Aug–Sep 2025, the car was held an additional 24 days, with no permanent fix for the electrical defect. Overall, my Tucson has been out of service for 60+ days between 2023–2025. Examples of unfair/deceptive conduct: dismissing documented defects under warranty, only acknowledging later after expiration. Attempting to shift labor costs onto me in Jan 2025 despite warranty obligations. Returning my vehicle with only ~39 miles of gas after requiring me to return a loaner full. Repeated misdiagnoses and delays despite video and documentation provided. These actions are deceptive and unfair, leaving me with an unsafe, unreliable vehicle and causing financial loss and hardship to my work as a self-employed pet sitter and dog groomer. I request the attorney general investigate Hyundai’s conduct and enforce consumer protections under udtpa. Service records, receipts, and communications are available upon request.

On April 12, 2025, my 2018 Hyundai tuson which only has 99,000 miles started stalling out at random speeds. The vehicle stalled going up a hill and would not accelerate it would also not go past 55-60 miles per hour on the highway. There were no check engine lights or codes on the dashboard. The vehicle is also burning oil on 2 occasions when having the oil changed. I feel like my life and others is in danger because the vehicle is stalling at random speeds which could cause a major accident due to this issue. I could be hit by another vehicle while trying to accelerate or merge on the highway. I reported the oil consumption last November and I contacted Hyundai customer care who issued a case number in may 2025 for the stalling issue, they instructed me to take it to the Hyundai dealership to be diagnosed. There is a recall out, but they said my vehicle is not included in it. I took the vehicle to the dealership, and they confirmed the vehicle was stalling and would not accelerate and were able to reproduce the issue. They informed me the vehicle needed a new transmission, and the vehicle only has 99,000 miles. Hyundai and the dealership declined to add the vehicle to the recall campaign for stalling vehicles. I had to cover the cost of $3,000 for a new transmission. I picked the vehicle up on June 6,2025 with the new transmission installed and it is still stalling and won't accelerate past 45 miles per hour.

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving at 60 mph, the vehicle lost automotive power, with the check engine warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed, and the contact was advised that there were metal shavings found on the camshaft sensor. The contact was advised that the camshaft sensor, oil flow solenoid, and variable tee valve were faulty and needed to be replaced. The vehicle was repaired; however, the failure reoccurred 3 months later. The contact stated that while driving 60 mph, the vehicle failed to accelerate as needed, with the check engine and oil light illuminated. The vehicle was taken to a local dealer, where the vehicle was diagnosed, and the contact was informed that the engine was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 56,942.

Over the past nine months, I’ve been experiencing ongoing issues with my 2018 Hyundai Tucson engine and transmission. After four consumption tests and a flush confirming that the engine is burning between 0. 8 and 0. 3 liters of oil for every 1,000, I was informed Hyundai refuses to either repair the issue or conduct testing to determine the cause. The timeline is summarized below: •February 2025 – I was told by [xxx] my vehicle simply did not have enough oil after the last oil change; •March 2025 – I was informed an initial consumption test needed to be completed; •may 2025 – a second consumption test revealed the engine was burning more than 1 liter per 1000 and a flush was completed; •July 2025 – a third consumption test was completed, revealing that while the engine was excessively burning oil, it was not currently at 1 liter per 1000 based on that test; August 2025 – the oil light came on & I was instructed to put a liter of oil into my vehicle to make it to the certified dealer for next steps. The next steps were another consumption test. Unfortunately, because I was told to add oil to make it to the dealership, I was then informed that this added oil would alter the testing, and we had to start over. •September 2025 – I am now awaiting the results of the fourth consumption test. I have receipts for every 6 months or 7,500 of service since purchasing the vehicle. , despite the engine and transmission being under warranty, the dealership has refused to conduct testing to determine the cause of the issue or remedy the excessive consumption. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. The vehicle was taken to the dealer, who informed the contact that the vehicle was abnormally low on oil even though it had been less than 3,000 miles since the previous oil change was performed. The dealer instructed the contact to drive the vehicle for 1,000 miles then return as part of an oil consumption test. The contact stated that after the oil consumption test was completed, the contact was informed that the engine was consuming an abnormal amount of engine oil; however, the dealer had not provided the cause for the failure. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 35,000.

74,000 miles excessive oil consumption, 1 quart per 1000 miles. Low oil pressure warning. Oil warning light, repeated and various codes. Noticeable ticking/clatter at startup. Not included in current recalls.

I was driving my car and the engine started knocking and when I stopped the car kept stalling and losing power especially going up a hill. I had oil in the car. I bought the car to a repair shop and the mechanic advised me to go to Hyundai because they’re having problems with the engines in the Tucsons. I found out they extended the warranty from 100k to 150k so I’m covered I thought. They started diagnosing my car and they said the engine needs to be replaced. They contacted Hyundai corporate to dis cuss this. Corporate said they’re no t responsible for this because there was sludge in the engine. The car has 103k miles on it. The diagnosis charge I owe so far is about 400. 00 Hyundai corporate wants further diagnosing of the engine. The dealership said Hyundai corporate said I have to pay the additional diagnostic charges of approximately 900. 00 before they’ll determine the outcome of my claim. I don’t think it’s fair at all. I believe they should be paying for information they’re requesting. I’m having a hard time with Hyundai corporate with this runaround they’re giving me. I do t l ow what else to do? I can’t afford to pay for an engine replacement that they should be responsible for this problem. I hope I’ve proved enough information. Thank you sincerely.

There is oil that leaks on a couple spark plugs. . . . . When I remove the plug there is oil on the plug cover and inside where the plug goes in. . . . . . . . . Disturbing. . . . . Can you help. . . . Supposed to be a recall but I don't know what to do. . . . . I would like to get that straightened out. . . . . I want to keep it . . . . . Also like to buy my wife a new one. . . . . . Can you help on this problem. . . . They were supposed to fix recall. . . . . Hundai uniontown PA. Can you help. . . . [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Loosing oil constantly and now there is a loud noise with the engine/motor.

Engine had oil consumption problem. We bought it as second owners around 89k miles. Now at 98k miles and engine has blown. It’s not going to be fixed without a replacement. We are getting the run around by Hyundai in ballwin asking us to pay 500 upfront and all kinds of pushback. We have to tow and they will look at it even though it is still under 100kmile powertrain warranty. We got 3 months use out of a vehicle we just paid 15k for. Total loss.

Had oil consumption problems for a while started around 60,000mi. I got regular and frequent oil changes and the engine seized up at 94,000mi while driving. Hyundai refused to take accountability.

On Saturday, November 23rd, while driving down the highway the check engine light came on and the car would not accelerate past 40 mph. When accelerating from a stop, the car's acceleration is greatly diminished. The car was checked out be a local Hyundai dealership. After running a diagnostic, the mechanic reported the following: the car has a knock sensor code, valve stem seals are leaking a little bit, compression test showed low compression on all four cylinders (between 130 and 140) normally it is 185. This indicates wear in the rings and losing compression that way. Dealership says only option is to replace the engine. Currently have 95k miles on the car. I believe we are the second owners of this car.

This vehicle had a engine replaced by the dealership Nov 2024. Has not run the same since. Getting worse and seems like transmission issues. I was told the first and the 2nd owner which I'm the 2nd owner has a 5 year 100,000 mile warranty. It's been 4 years and since I've had the vehicle I've driven round off 60,ooo miles . The vehicle had $84,000 something miles on it when I got it. It's becoming very dangerous to drive around other cars giving out of power in the middle of streets and barely not going up hills or freeways and streets. ??.

There is a very well known issue with Hyundai (and kia) and oil consumption issues, no recalls have been issued yet and I am another person dealing with this without any real support from Hyundai to solve the issue. In 2024 I did an oil consumption test, they found it was burning oil excessively and I had to pay $700 out of pocket for a cleaning they recommended. Afterwards it was burning only 1 quart every 1k miles which they said is acceptable so we moved on. Less than a year later I am still dealing with this issue only it has gotten worse, I am burning 5-6 quarts every 1k miles. I do keep up with my oil changes, I now have to check it and top it off almost daily, and even without being a car expert I know that something has to be done. . . Why aren't there any recalls yet? despite keeping up with my maintenance, there are other issues that can be related from this issue, including the engine stalling or skipping which is a safety issue when driving.

My 2018 Hyundai Tucson has been experiencing oil consumption issues for over a year. It began at around 80k miles, when it should have been covered by warranty but they made me pay out of pocket for an oil consumption test only to ultimately recommend a top end cleaning, which I also paid for and it did not solve the problem. This is a known issue with Hyundai, and they have settled many lawsuits but have consistently denied any repair or solution for me. I am burning about 5 quarts of oil every week, and this is a problem they refuse to help solve.

I have had several incidents of my car running out of oil before the recommended oil change date or mileage. The low oil light never comes on. On the last occurrence of my oil being too low the check engine light did come on and the engine began to make a knocking or ticking-like sound. I have already had to have the catalytic converter replaced on this vehicle and it is around 90,000 miles.

We were consuming about a quart of oil every week and a half. I drive over 60 miles a day. We added oil until we could check it out. First dealership said that no visible exterior leaks so they told us to take to Hyundai. Once at Hyundai we were told compression was down and we needed a new engine, catalytic converter, and turbo. Our extended warranty only approved a short block. Said we have sludge and we have to cover the rest of the parts that have sludge but we proved our oil changes and used synthetic oil. They will not give us proof of anything. Hyundai is known for this and won’t cover anything. Hyuandai beaverton and ethos is being horrible.

A few months back my car started to loose its ability to accelerate on the highway. I stopped to get my oil changed to see if that would help but the acceleration was still very limited. Now a month ago, my car started pouring smoke out of the exhaust. It was brought to a mechanic who said it was a turbo and or engine issue. I took it to a Hyundai near me for a clear diagnoses and they diagnosed it as needing a new turbo. I got a new turbo put into the car. My car worked for 1 day before pouring oil out of the bottom of it. I then had a new turbo put in. My car worked well for 1 week but now is leaking oil from the exhaust and making loud knocking, go kart noises. Most people I have talked to say it's the engine and that these problems are way too common in Hyundais well before 100k miles. My car has also been peeling white paint from the hood of my car for 2 years. I have passed hundreds of white Hyundai's with the same paint problem.

The contact owns a 2018 Hyundai Tucson. The contact stated that the vehicle was consuming an excessive amount of engine oil with the oil warning light illuminated. The vehicle was taken to an independent mechanic and a dealer to be inspected and two oil consumption tests were performed by the dealer. The oil consumption tests showed no defects with the engine. The dealer performed an engine flush; however, the failure persisted. The contact was advised to have oil changes performed every 3,000 miles instead of the recommended 5,000 miles. The contact stated that recently after having an oil change, the dealer recommended a transmission fluid flush. The contact stated that after the transmission fluid flush was performed, the vehicle jerked and hesitated while depressing the accelerator pedal. There was no warning light illuminated. The dealer was notified of the failure and the contact was provided an estimate for a diagnostic test. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 94,000.

My vehicle is burning engine oil within a short period of time. I was told my several mechanics that a part was recalled on my vehicle to fix this issue.

On 10/5, after exiting the highway, check engine light began blinking. A loud cranking noise was present and the car began “puttering. ” I immediately pulled over to find a parking spot. As I parked, the car seemed to stop running and the oil light turned on. I called a tow truck but since this occurred on the weekend, the dealer wasn’t open. Local mechanic stated it was the engine. I had it towed to Hyundai and it’s awaiting diagnosis.

In late September of ‘24 my husband was driving our oldest to school when my 2018 Hyundai tuscon seized mid drive with our son in the back seat with no oil or engine light warning. Husband inspected the oil and I was still full. A Hyundai dealer towed at their expense in October, diagnosed an engine failure. Denied me service since my extended warranty expired and I didn’t have the ksds update. I wish they would as I still owe on the vehicle and I’m out of work. Making this complaint is to only spread awareness that 2017 Tucson with the 2. 0 l engine had an engine failure connecting to rod bearings. My 2018 has the same engine type and failure as the 2017. Hyundai corp fails to recognize the problem. My 2018 didn’t fail due to lack of oil changes as I can I prove that. My 2018 failed on Hyundai’s fault. Now my car sits at the dealership in anchorage, alaska and I still owe 9k and I live in fairbanks, alaska. 360 miles away from me.

Car would not speed up no matter how hard I pressed accelerator, vehicle wouldn't speed up kept going at slower speed had to have towed to dealership. Don't know what is wrong. I was scared someone would hit me, or my speed would cause an accident. Only after issue started did engine light come on.