Other Fuel System Problems of Hyundai Tucson - part 1

While driving down the highway, the check engine light started to flash. Once the car was turned off and back on again, it shook violently. It was hard to keep it in the lane and I was worried it would cause an accident. It was driven off the highway while constantly shaking. Once it sat off for roughly 30 minutes, it would turn on, but wouldn't turn over and drive. It was towed to a dealership where it was diagnosed, though I was never given anything past a verbal "it stopped compressing". It turns on and over, but makes a grinding noise. It will die and turn off the engine after roughly 45 minutes. This had never happened before. *I've been told a few different things by people who hear about the problem, but I've never received a real diagnosis by the Hyundai dealership it is located at. It has always had a oil consumption problem, adding roughly one quart of oil every 800-1000 miles. It has had oil changes every 5,000 miles. It also had a hard time when cold-started accelerating, but would work fine once heated up. It is available for inspection upon request.

See all problems of the 2017 Hyundai Tucson 🔎.

I have had 2 catalytic converters the original and a 2nd one. Now I need a 3rd due to excessive oil consumption. Corporate did a good will for a combustion cleaning and that did nothing. The dealership checked my oil and said there was excessive oil consumption and submitted for an engine replacement and it was rejected. Absolutely ridiculous.

See all problems of the 2019 Hyundai Tucson 🔎.

While driving at highway speeds, my 2019 Hyundai Tucson se suddenly loses acceleration and drops into a 30 mph 'limp mode' while the engine overheats. This creates an immediate highway safety hazard with an imminent risk of a rear-end collision. The vehicle also suffers from excessive oil consumption, requiring manual top-offs twice a week. The servicing dealership diagnosed a fuel system failure, quoting $5,847 to replace the fuel pump, fuel injectors, and oil gasket. Hyundai corporate (case #43358088) officially denied warranty coverage on October 12, 2026, falsely claiming wear and tear despite active txxm 150,000-mile extended warranty framework protections. Furthermore, there is a data discrepancy: the dealership pulled diagnostic trouble code p0172, but corporate claims the vehicle threw code p0173 and is withholding the physical diagnostic printout behind a fee paywall.

My car suddenly broke down on the side of a busy highway halfway through my workday. When attempting to restart it, all warning lights came on on the dashboard and I could see white smoke coming out of the exhaust pipe while the car shook. I had it towed to the nearest Hyundai dealership and they confirmed it was broken fuel injector(s). I do not have the broken piece to show as it is with the dealership. It has not been examined by police or insurance. No warning lights came on until after the car had suddenly slowed to a stop and I attempted to restart it.

See all problems of the 2022 Hyundai Tucson 🔎.

The new 2019 Hyundai Tucson equipped with the nu2. 0l gdi engine, I purchased in 1/2020 as the original owner to this day has been diagnosed with a burnt exhaust valve due to heavy oil consumption that has been an uncorrected documented manufacturer’s defect within Hyundai motor corporation. The excessive engine oil consumption has poisoned and destroyed the first catalytic converter, has fouled the combustion chamber which has consequently choked and burnt the exhaust valve with the excess oil ash and carbon buildup. The car was approved for a second catalytic converter install last week which my car currently sits at 125,000 miles and the dealership through the authority of approval with Hyundai motor America has replaced under warranty however subsequently running the excess consumption test, the car now has a burnt exhaust valve which Hyundai motor America is extending a “good faith” proposal which they are willing to replace 60% of the burnt valve and I’m responsible for the 40% even though I have complied fully with the dealership’s recommended preventive maintenance schedule which has been solely performed at the same dealership since the day I bought the car and drove off the lot up until the 100k mile warranty. And now discovering my particular motor has been extended to the 15/150,000 warranty due to the lawsuit settlement. I have continued with my diligence with keeping up with the oil, instead of ignoring the issue that the car burns excessive oil to potentially has the engine fail while driving to be fully covered on the rod bearing failure settlement. Help in my concerns would be greatly appreciated through NHTSA.

We were driving 10-15 mph on a local road approaching a red light. The brakes stopped working so we couldn't stop at the red. When we pressed the brakes more, we had unintended acceleration and had to go on the sidewalk to avoid cars. Then had to swerve and zigzag to avoid cars coming out of an intersection and oncoming traffic. We were going around 60 mph while pressing the brake. It was horribly dangerous for us and others. We hit signs and poles for avoid cars and sustained significant damage to the car. The manufacturer states the recorder does not show anything prior to the sudden acceleration. It only confirms that the brake was being used and not the gas, as we had already known. Contrary to what they report, the emergency braking system is not what helped us as it did not work as intended. Driver ended up putting the car in neutral when we got away from traffic, and that is how we were finally able to stop. Since we don't have a dependable assessment from the investigation, we are guessing this was a computer/electrical malfunction.

See all problems of the 2025 Hyundai Tucson 🔎.

An authorized Hyundai dealership performed a major engine replacement on my vehicle on June 11, 2024. The vehicle mileage was documented as 110,797 miles in and 111,799 miles out. In September 2026, after the vehicle had reached 129,430 miles, I brought it to an authorized Hyundai dealership because of a severe gasoline odor and evidence of gasoline entering the engine oil. The dealership documented the vehicle at 129,430 miles in and 129,431 miles out. The documented mileage from the 2024 engine replacement's out-mileage of 111,799 to the September 2026 diagnostic in-mileage of 129,430 is 18,633 miles. The vehicle was returned to me, but the fuel/oil contamination condition recurred within approximately 48 hours. The oil level subsequently increased substantially. I repeatedly requested the dealership's technician narrative, diagnostic findings, test results, and electronic service documentation showing what was inspected, what was tested, and what findings supported the dealership's diagnosis. The dealership performed the work, yet these records have not been provided to me. Hyundai corporate has also not provided the requested documentation and has directed me toward additional diagnostic expense rather than providing the records from the inspection already performed. The 2024 engine-replacement documentation lists the replacement engine and associated service parts, including service kits 21111-2gk50-qqh and 21111-2gk70-qqh, as well as oil-cooler pipe/hose assembly 25470-2g050-qqh. I am requesting that the actual service records establish what components were installed, replaced, transferred, or reused during that repair. I am not claiming that the available information by itself establishes the root cause. My concern is the recurrence of apparent fuel contamination of the engine oil only 18,633 miles after the documented engine-replacement out-mileage, combined with the lack of diagnostic documentation from the authorized dealership's inspection. I am su.

See all problems of the 2014 Hyundai Tucson 🔎.

Vehicle fuel injector code p053f84 reading on 9/9/26, this is the second time vehicle was taken to the dealership for the exact same problem, the idle button in orange, and displayed, first visit while vehicle within warranty limits technician stated couldn't find anything wrong, now vehicle is out of warranty and dealership wants $1300 to fix the same issue. Also the engine was hesitating at each occurrence.

Engine has defect that causes oil to heat at an unusual levels there for damaging other vehicle components such as the exhaust system parts clogging up and triggering check engine warning lights for emissions.

See all problems of the 2020 Hyundai Tucson 🔎.

The car was working perfectly fine I drive it for work all the time and one day it started shaking weirdly. A couple days later the check engine light turned on. It was throwing the code that was pointing to "misfiring in the 3rd cylinder" we changed all the spark plugs, 3rd cylinder coil pack, and switch the coil pack to see if it would say a misfiring in a different cylinder. We then took it to a mechanic saying that it is the high pressure fuel injectors and that he has seen this problem with other Hyundai Tucson around the same year as us and that there was a bulletin on it.

See all problems of the 2023 Hyundai Tucson 🔎.

Fuel injector went bad causing vehicle engine to misfire and shake rapidly. Check engine light is on. The vehicle only has 40,000 miles on it. Seems to be a very common concern for this make and model and roughly the same years. Will not accelerate instantly and will surge a bit when it does. Will still shake when the vehicle is idle.

The issues is the engine shuts off at idle or in motion. Sometimes hard to start but it cranks over well. Then when it restarts after a shut down, three lights stay on some traction control, the steering and a picture of a car downhill with a clock or engine rpm light. No check engine light on. Then recently the tachometer doesn’t work after a shutdown then restart. But when you turn off the engine with ignition, then restart the third time. The lights all go off then the rpm gauge works. But the whole time the engine runs great. When I check ecm all is good no fault codes, I monitor fuel pressure the low psi is 40 the high side is 999 psi. Is this a common issue with these cars?.

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.

Dealer completed update 9c2 theta 2 emissions update. After update, the car sputters slightly and increased noise is heard from the tailpipe. Customer returned to dealer after driving the car in different temps and noted the above complaint. Dealer verified the complaint but continues to take no responsibility for the fault on the repair receipt by writing condition is “normal” and recommending “customer to allow vehicle to properly warm up for one to three minutes prior to driving. ” the last line of the service record indicates “no problem found at this time. ” a template letter from Hyundai was attached to the repair record. Hyundai may be instructing dealers to not document problems in the service records assumably so they will not be liable for future litigation. It should be noted that owner was previously denied payment on their 2017 Hyundai Tucson due to lack of documentation by the dealer to prove the case with prior class action lawsuit despite years of verbal complaints to the service staff. Dealer may be intentionally not documenting or taking responsibility for systematic failures in the Tucson in service records. This may be on the direction of Hyundai corporate. 2020 Hyundai Tucson continues to sputter periodically during normal driving conditions. Car is parked in an attached garage making a 1 to 3 minute warm-up time-consuming and possibly unsafe. This required warm up should not be considered normal as indicated on the repair record. Hyundai should take responsibility for their shortcomings and allow proper documentation on service records rather than pushing the fault on the owners. As with previous Tucson complaints, the dealer continues to indicate the problems are the result of owner actions not internal failures.

2023 Hyundai Tucson limited, 2. 5l gdi, alabama-built (VIN 5nmxxxx), built [xxx]. On [xxx], at about 37,550 miles, the check engine light came on flashing and the engine ran rough while I was traveling in canada. My scan tool showed p0300, p0302 and p0304 (misfires on cylinders 2 and 4). On July 6, 2026, experience Hyundai in charlottetown, pe (service order 92xxx) replaced one ignition coil under warranty. No fuel injector leak test was performed. The misfires returned. On [xxx], at 39,409 miles, my scan showed p0302 active and p0304 pending. The car also had extended cranking after sitting and the check engine light was on. I was told I could keep driving the car unless it started to jerk or engine light started to flash, then immediately stop driving it and have it towed. On September 25, 2026, the car was towed to mcgovern Hyundai route 2, leominster, MA (invoice 148xxx). The dealer found all 4 fuel injectors leaking and replaced them under warranty with injector service kit 35399-2s133qqh. My vehicle is outside the production range of Hyundai tsbs 23-FL-002h-1 and 26-FL-001h, which cover this injector failure only for alabama-built Tucsons produced through July 11, 2022. Yet it failed in the same way. I am concerned the defect extends beyond the bulletin dates and that a sudden misfire could cause loss of power in traffic. There is no recall for this condition. The dealer found all 4 fuel injectors leaking, even though only cylinders 2 and 4 had set misfire codes and replaced them under warranty with injector service kit 35399-2s133qqh. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While driving the car stalled and then the engine shutdown, caused by a misfired fuel injector. Myself and the passengers in the car were minorly safe, as this incident occurred while driving through the yellowstone national park; having to pull over on the side of the road with no shoulder. The woody smith Hyundai dealership in idaho falls confirmed that the feul injectors had misfired, and then replaced them. Prior to the failure, there was no warning until the car was actively stalling and failing (battery light and check engine light came on).

On 6 occasions over the last 2 months when coming to a stop the engine will increase rpm to 1600 forcing much extra brake pressure to stop, forcing me to shutoff the engine. No codes or indicators and the dealer can't duplicate. I mentioned to the dealer that the car will accelerate while holding down the brake thinking that as a clue as to what's wrong and the service tech told me that is normal but as far as I know it isn't normal. I don't know what to do.

See all problems of the 2024 Hyundai Tucson 🔎.

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

See all problems of the 2018 Hyundai Tucson 🔎.

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).

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 🔎.

I became aware of a technical service bulletin that Hyundai published in Jan 2025 acknowledging that many vehicles (of which mine is one) have a faulty fuel injector and it will fail. Hyundai elected to not issue a recall on this issue so the public has no idea they are driving vehicles that are just awaiting for a malfunction in their engine. It appears the reason Hyundai is doing this is because fuel injectors are only covered on the manufacturer’s limited 5-year 60,000-mile warranty so they are hoping the faulty injectors last long enough to get beyond that point and customers don’t know the injectors were even faulty to begin with (because tsbs are not public knowledge). Hyundai can then charge for full repairs and omit admittance that the injectors were faulty and blame it on wear and tear. Mine failed beyond 60,000 miles and I am in this predicament. I imagine most customers with 2022 vehicles have not driven as much as me and haven’t had this come up. It seemed like something I should inform someone about. Do with this what you wish.

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.

On 3 occasions over my 18-month ownership of this certified pre-owned Hyundai 2022 Tucson, the vehicle surged suddenly forward with brake applied at creeping (parking) speeds of 3-4 mph. No warning lamps were observed. On the most recent (3rd) occasion, a crash over a sidewalk and into a storefront caused $10,000 damage. No pedestrians were harmed, no airbags deployed and neither passenger was harmed. The service department is "unable to duplicate" the surging behavior and declares the car mechanically "safe to drive. ".

Sitting at a red light the vehicle seemed to almost stalled then lunged forward about eight feet almost colliding with the vehicle in front of me. To my knowledge the vehicle has not been inspected by the manufacturer nor has the problem been reproduced by a dealer or independent service center. To my knowledge there were no warning lights, messages or symptoms. I am somewhat unfamiliar with this vehicle since I've only owned it for 5 days. I picked it up on 4-25-26.

My 2017 Hyundai Tucson is experiencing dangerous, sudden engine stalling, which are symptoms directly matching service campaign t1b. These critical safety issues surfaced following a total engine replacement in June 2025. Despite the vehicle being within the 12-month/12,000 mile workmanship warranty, the dealership is refusing to honor this coverage or offer goodwill assistance. My claim is based on a documented pattern of physical and technical negligence: - failure to update software: the dealership failed to perform the mandatory ecm/tcm software integration (campaign t1b) during engine swap, which is required to prevent the exact stalling I am now experiencing. - dismissal of warning lights (code p0456): one day after the engine replacement was “completed,” I returned to the dealership because the check engine light illuminated with code p0456. This was dismissed by the service provider without a proper diagnostic resolution, despite being a direct indicator of improper vacuum line reconnection during the engine installation. - mechanical negligence (coolant leak): post-engine swap, the vehicle developed a coolant leak, which was a direct result of improper reassembly. Additional proof of the lack of due diligence during the repair. The lack of follow-through, combined with the dismissal of a life-safety defect and poor physical workmanship, suggests a total failure in the case management process. I am urgently requesting assistance to resolve this hazardous situation.

In April 2026 (29,805 miles) I was on an interstate underpass u-turn and when I went to accelerate from the u-turn, the vehicle “revved”, had difficulty accelerating, and appeared to not go into the next gear for a roughly 10 seconds, meaning I was unable to accelerate and get out of the way from oncoming traffic. Traffic slowed and the vehicle suddenly returned to normal (no warning lights appeared) and I drove home cautiously with hazards on. When attempting to leave less than 45 minutes later, the vehicle started, then as I placed it into drive, it began lunging and the check engine light appeared. Because it was running rough and kept lunging, I parked and had it towed to the dealership. The dtc code listed was po30300 (dtc system powertrain and subsystem ems). Per the dealership, fuel injector #3 was bad and needed to be replaced. When I picked up the vehicle, notes stated “ gdi fuel injctr repl (all4)”. I picked up the vehicle after the repair. In August 2026 (30,923 miles), with less than 1,000 miles driven since repair, I started the vehicle and it immediately “died”. I restarted it and the check engine light came on and it began lunging out of my driveway. I also had difficulty getting the vehicle to brake and almost hit our community entrance/exit gate. A notification appeared on my infotainment system stating: “a possible condition with your engine control system has been detected. A full system check is recommended to be done soon. Please contact your local dealership to schedule an appointment”. The dtc codes listed on the Hyundai app were: po30020, po30040, po30010, po30000, and po19185, p217700. (dtc system powertrain and subsystem ems). I had the vehicle towed to the dealership. They didn’t have a loaner vehicle and I canceled my trip. Later, I was notified that “a hose was disconnected and was allowing air to enter the engine”. He stated, “we flushed it out and everything is working now”. I was told I could come pick it up before they closed.

I purchased this 2022 Tucson limited Hyundai new. It has 25,000 miles on it. The car check engine light came on and a power reduction began along with shaking of the car. I was able to clear the intersection safely. I was able to turn into a safe spot and shut down the car. It was towed to the dealer who then informed me that it was an injector know issue for this year and would be covered under the 5 year warranty. However, as this is a engine/powertrain problem, it should be covered on the 100,000/ten year warranty. A TSB (23-FL-002h-1) alert had already been issued, but not a recall. Many owners have reported having this problem repeatedly, as a safety issue and a known mfg defect. When is the government going to step up and demand a real fix be done before someone is killed? owner are current left fighting with the dealers over the warranty limits or taking legal action. If you google this problem, you can find out the national level of this problem, from accidents which caused fires or accidents from power loss. My car is still at the dealer waiting on parts. Its time to force a recall! I will be demanding that it is covered for the 10 year warranty period and considering taking action under the lemon laws. If the government fails to act on this soon, than they are just as libel as the manufacturer. Your immediate attention to this issues is requested.

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.

When braking my 2022 Hyundai Tucson to come to a stop, the vehicle continues to accelerate. I have to release the brake and re-apply the brake to fix the acceleration problem. I check the internet on this problem. They internet says it is a software problem. The vehicle shows no code and the dealer says they don't have a problem. The dealer has not check for the problem since there is no code. No warning lamps or messages show up on dash. This happened 4 times in the last few months. Latest date was 4-4-2026.

I just got an oil change and the oil was completely gone although there was no leak found. Not even a week later my oil is low again. There is smoke coming from the back pipes and the gas is burning out quickly. I just purchased the car last year.

See all problems of the 2021 Hyundai Tucson 🔎.

Car is a gas hybrid (not plugin). 3 occurrences over the last couple of months. Car emits a warning sound and a message on the dash says "check hybrid system. Stop safely". Basically right after this message the car starts losing power and stops. Doesn't matter if on freeway or not. You need to find a place to pull over or you stop traffic wherever you are. Looks like hybrid battery is completely drained. Can not be re-created. Dealer has it now for the 3rd time. Dealer in the past have not been able to find cause/cure since this issue is not posting any errors to the onboard diagnostic system. Temporary 'fix' is to power off car, and power back on. Looks like this is a 'known' issue though as its being reported by quite a few people online.

On March 21st, while driving my Hyundai vehicle, I noticed the vehicle began making a ticking sound. After stopping the vehicle, it slowly began catching on fire. The fire ultimately spread and resulted in the vehicle becoming a total loss. This created a serious safety concern and placed me at risk. I later learned there was a recall associated with the vehicle. However, I never received any recall notices because Hyundai reportedly had the wrong address on file. Had I been properly notified of the recall and potential safety risks, I would have done everything in my power to ensure the vehicle was inspected, repaired, and safe to drive. Because I was unaware of the recall issue, the vehicle continued to be operated without my knowledge of the potential danger. The incident caused significant financial and transportation hardship, including loss of reliable transportation and additional financial strain. Hyundai later reached a determination regarding the matter, but I remain concerned about the serious safety risk and the fact that I did not receive proper recall notification before the incident occurred. I am submitting this complaint because I believe the recall notification process and handling of this matter should be reviewed further due to the serious safety risk involved.

Bought the 2022 Hyundai Tucson. It was driving perfect no issues then I hit 52,000 miles and the check engine light illuminated. The vehicle started sputtering and idling hard like it wasn’t getting fuel when the gas was pressed. I was on the interstate and the vehicle wouldn’t go over 35mph. Now the check engine light illuminates off and on when it feels like it.

High pressure fuel injectors went out.

This vehicle has a considerate amount of oil dilution problems. I have had this vehicle taken in for service several times due to gasoline mixed into the engine oil. Again on March 6 2026 for the 4th time now the vehicle has a check engine light extreme hesitation with an almost stopping jerking motion due to dilution problems. Multiple dealerships claim there is nothing wrong with the car. . There is a distinct gasoline smell in the engine oil. The vehicle at times is almost unsafe to drive due to the hesitation and halting it does on its own. Every time a dealership is contacted my problem is dismissed. There is a burning smell due to the oil gas dilution issue. The car reaches higher temperatures than it should. And now the Hyundai dealership is making me wait almost a month again to have the problem looked at again which then puts me as the driver in an unsafe situation to drive a vehicle with such hesitation and fire risk. If they dismiss this oil and gas mix again and do not repair the car it could seize my engine or maybe possibly even cause fire damage.