I was driving on the highway with my ACC (Adaptive Cruise Control) and Lane Keeping Assistance on. Suddenly, I heard a loud noise from the engine. My vehicle was slowing down and was not able to accelerate. As I was pulling my vehicle on the side of the road, I saw oil warning light and check engine light on at the dashboard.

- Duluth, GA, USA

Went to get state inspection sticker and when there ask them to check the oil, because every time I checked the oil it showed over filled. The dealership checked it show over filled when they checked it and put it on rack to drain the oil and put some of that oil in a bottle. Told me would need to get approval from hyundai to fix the issue. Two days later hyundai refused to fix problem said there was water in the oil pan. Then accused me of driving the vehicle through high water to which I never have and told them so, but they refused to find out how water is getting into the oil pan. They said all the fluid levels are normal, so they don't know where or how its getting in the oil pan. I bought the car from the same dealership brand new and have had it 1 1/2 years and only have 2475 miles on the vehicle.

- Huntington, WV, USA

When driving my car at any speed it will suddenly begin to get sluggish then it becomes unresponsive to me giving it gas and starts to decelerate. When this happens suddenly warning signs on the vehicle go off stating to check the hybrid system and stop the vehicle. When this happens the car then stops functioning. I never know when it is gonna happen. I have been in the middle of heavy traffic and at high speeds stuck in the middle of the road. I have brought it in now four times to different dealerships and contacted corporate and No one can find a problem. I have pictures of the warning signs going off, all I am being told is we don-€™t find anything wrong when they run their test or try to reproduce the issue, so they can-€™t help me. This is a very serious and dangerous situation to be driving a car that has and will stall at any given time.

- Melrose Park, IL, USA

On Tues Feb 7, 2023, I was traveling at approx 6:50 pm on a suburban street at the posted 35 mph limit. My car started to lose speed, slowing to 27, then about 22-24 mph. I felt as though the engine was misfiring for an unknown reason. Since I was approaching an intersection and needed to make a left-hand turn, I started to depress the brake pedal. With no oncoming traffic, I slowed not quite to a stop, made the turn, but then had extreme difficulty getting the car to accelerate, again with the engine sputtering, chugging like a misfire, and shaking. My vehicle did not seem to go beyond 15 mph, and slowed again as I turned into my destination, about 2-3 blocks from the intersection. I parked and locked the car and was in a store for approximately 10 minutes. When returning to my vehicle, it would not start-the brake pedal could not be depressed at all, it appeared extremely hard. After 1-2 minutes of gently tapping the brake pedal, it loosened and I started the car. I put the car in reverse and it stopped in the middle of the parking lot with cars almost hitting me. I saw Engine Warning lights, Battery Warning lights, and a quick message across the screen but was unable to capture the meaning. After several more attempts, the engine started but was shaking violently, but I could not go beyond 3 mph. The shaking was so strong, items on the passenger seat shifted on the floor. I chose to remain in the parking lot and call Hyundai Bluelink. Since it was dark, I remained in the vehicle with the engine running, but excessive smoke billowed from the rear of the car. It was towed to Gerald Hyundai in North Aurora. After 3 days the dealer could not find any issue, however, I refused to take the car back, as I could recall it misfiring in previous weeks but unfortunately dismissed it. I requested a Technical Case File be opened at the Dealer. I still do not have my car after 1 week. This is a very serious issue and I am aware other owners have experienced it as well.

- North Aurora, IL, USA

The contact owns a 2022 Hyundai Tucson. The contact stated while driving approximately 50 MPH, the vehicle was intermittently decelerating and was unable to accelerate to exceed 42 MPH, despite depressing the accelerator pedal. No warning lights were illuminated. The contact made a local dealer aware of the failure; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 4,000.

- Ledyard, CT, USA

The vehicle is currently at the dealership. I purchased the 2022 hyundai Tucson hybrid limited in April. Have gotten my oil changes done religiously at the dealership. Vehicle is at 22k miles. And had oil change 5 days prior to incident. I was on the way to work and vehicle started to struggle to accelerate, engine began malfunctioning. Vehicle dropped drastically from 80mph Dow to 25-30 mph in short period of time, would have been rear ended if not in right lane already. No warning or previous problems. No warning or check engine lights EVER came on before the vehicle would not drive at all. And was told by the vehicle to -€œcheck hybrid system stop safely-€. Called roadside and vehicle was towed to dealership. They diagnosed as -€œthe timing chain was -€˜missing-€™ one of the cylinders, causing a loss of power from the gasoline engine and the hybrid system attempted to compensate for lost power, resulting in engine failure-€ later that day when I arrived from work to get a loaner I was told that it was a broken camshaft and warranty would pay for a new engine.-€

- Jackson, MS, USA

On three separate occasions the vehicle refused to accelerate after being in a stop and go mode (I.e. traffic/drive thru). All three times an alert popped up on the dashboard stating: HEV Check Hybrid System Stop Safely. The second time this occurred a diagnostic code came up: DTCP112000. In all three occasions turning the car off and restarting resolved the issue at least temporarily. Also- the battery was completely depleted after each incident. Vehicle is at the dealership service center for the second time without and current diagnosis or solution.

- Denver, CO, USA

Driving the car acceleration will go to zero. You can floor it and it will only go to 20mph. The car asked you to pull over safely. They hybrid battery is at zero and warning signs keep flashing. Has happened over three times on a new car. Dealership can-€™t figure it out. When I look up -€œHEV warning Tucson hybrid-€ there are many with same issue. Very, very dangerous issue.

- Denver, CO, USA

While accelerating on an on ramp leading to the interstate, the 2022 Hyundai Tucson PHEV Limited was in the Smart Drive Mode and the vehicle was in Electric Mode only being powered by the electric motor. I noticed that the vehicle was struggling to accelerate to the interstate speed of 70 MPH, I pressed the accelerator further in order to gain more speed to safely merge onto the interstate. With the accelerator pushed all the way, the engine eventually turned on after 5-7 seconds assisting the vehicle to reach the speed of 70 MPH. Once on the interstate, I set the cruise control to 70 MPH but the vehicle was not able to maintain that speed. The speed of the Tucson started to drop suddenly and I then began to make my way to the right shoulder of the interstate. During the process of moving to the right shoulder, I did notice that the Power Gauge on the instrument cluster was maxed out, the vehicles engine was running at at very high revs, but I was never able to get more speed out of the vehicle. The vehicle was slowed to 40-45 MPH by the time I was able to reach the shoulder due to traffic. Once on the shoulder and out of the 3 lane, 70 MPH traffic, I was able to power down the vehicle and restart the vehicle with no issues. I then put the vehicle in drive and signaled to the left in order to merge back into traffic. I accelerated briskly to merge with the 70 MPH traffic and the vehicle did operate as normal. The vehicle began to move under EV power and the engine did turn on to begin assisting in moving the vehicle up to speed. The vehicle operated normally for the remainder of my drive, approximately 3-4 miles. During this event, the vehicle never did display any warning lights or messages on the instrument panel or the center screen. No warning tones or chimes were given either. The high voltage battery was at an approximately 68% state of charge and the fuel tank was approximately half full.

- Oklahoma City, OK, USA

I am an active-duty service member who purchased a new 2022 Hyundai Tucson Hybrid on 16 October 2021. The car occasionally makes a strange humming noise while the vehicle is completely turned off. I recorded my car making this strange noise, and the video recording can be seen at https://youtu.be/bY8GJenoWBQ. I had previously notified Hyundai Maintenance of this during a scheduled vehicle check; nothing was done to resolve this matter. The advertised fuel economy on this car is 36/37/37 (city/combined/highway) Miles per Gallon. I am currently getting 28 MPG (see attachment), which is approximately 30% below the advertised fuel economy. Since I purchased this vehicle, it has consistently delivered a poor fuel economy well below the advertised fuel economy. After trying to resolve the poor fuel economy issue with Hyundai for 9 months (see attachment), I reached out to the Better Business Bureau seeking a resolution. On 17 November 2022, I was notified by the Better Business Bureau that Hyundai rejected my proposed resolutions of Hyundai repairing the car under manufacturer warranty or replace it if unable to fix the poor fuel economy, as well as reimburse me for money spent due to excessive fuel consumption. Additionally, other persons have reported their Hyundai cars delivering a fuel economy much lower than advertised (visit https://www.reddit.com/r/Hyundai/comments/nwayqv/2022_tucson_hybrid_poor_gas_mileage/). I have the perception that Hyundai lied and deliberately deceived me. Something is wrong with my car, and Hyundai has been either incompetent or unwilling to repair the issue under the car manufacturer warranty. I believe that it's important to hold companies such as Hyundai accountable. Otherwise, it would have no incentive for doing what is right. I request your assistance with investigating, and if possible, taking actions to hold Hyundai accountable for deceiving consumers by exaggerating its car fuel economy.

- California, MD, USA

Initial incident happened in June 2022; car under 5k miles. When slowing down at a light, car suddenly started to shake and engine would shut off. Dashboard warning indicated place in neutral and start car again. After restart, car would still turn off, unable to move or shift gears without shutting down. After keeping engine off for a few minutes, car was driveable again but a sound coming from engine when in D while at a light. Brought to dealership in Woodbridge, VA but was told they were unable to replicate incident. 2nd incident occurred in October 29, 2022. At a light, car was going to auto shut off while at light but then lurched, shook violently and engine shut off. The dashboard said place in neutral and turn engine on. Was able to move car after a few attempts and move to safe area. Let car rest for a few hours. When driving, and slowing down at a light, car would shake; i would place in Neutral and car will settle. Any time at a light, it has to be in neutral or else engine will die. Brought to dealership, added 15miles but unable to replicate. Nov 3rd, car began to lurch when at speed of 40 - 45. after stopping at a light, car would not accelarate, engine revving but little movement. had to pull over and turn engine off. Nov 5th, while on highway vehicle began to lurch at 55-60mph, engine was at 4rpm, engine struggling but speed not increasing. since on a downhill, car was moving but engine revving; speed not accelerating. Had to merge to shoulder; shut car off 2x and restart before car drove without incident. Videos of dashboard were taken during incidents in October and November.

- Woodbridge, VA, USA

I bought this car less than 30 days ago, and it has 1,500 miles. I tried to start my car in the morning and when I put it in reverse, it just rolled forward. I braked and put it back in park and the engine shut off. I tried this a few more times before I gave up. A tow came and first suggested it was the alternator, before another tow came and suggested it was a sensor. It has been at the dealer for 48 hours without a diagnosis, -€œmaybe the injectors.-€ I am fortunate this happened in a parking lot and not while I was on the road. I am now terrified to drive this car.

- Cranberry Township, PA, USA

I was leaving a drive-through. Crossing traffic when my 2022 Tuscan N-Line just stopped accelerating the engine started to shake and SUV became unresponsive. As I was crossing traffic. I was almost hit. Moved the SUV to the middle of the street. Turned the SUV off. Restarted it. The SUV had no power and the check engine light came on. The engine started shaking violently. A bad burning smell ( like) burning rubber/ plastic started, then the engine started to smoke. I turned the SUV off again. After that the SUV wouldn-€™t start. Had it towed to the dealer. It only has 1130 miles on it. I just bought it July 20th.

- Denver, CO, USA

I was driving when the car stopped accelerating. Then I smelled something burning. I was able to pull over and saw smoke coming from my tailpipe. After that, the engine light came on. A warning came up on the display that said, multiple possible conditions have occurred with your vehicle.

- Fairburn, GA, USA

What component or system failed or malfunctioned, and is it available for inspection upon request? Since February of this year, a few weeks after I purchased this car the center console has to be replaced...it is on order to be replaced since April due to rear camera malfunction (Hyundai of Bowie, submitted BBB complaint). A few weeks ago the emergency brake initiates randomly. And yesterday the Engine light is on. Yes available upon request How was your safety or the safety of others put at risk" I'm unable to see cars or people when in reverse. While taking off from a parked position, the emergency brake comes on and can cause me to crash or stop suddenly forcing someone to crash into the back of me. Has the problem been reproduced or confirmed by a dealer or independent service center" Yes, took the truck for repair back in April, still unresolved (center console), no response from them after they supposedly ordered the replacement part. The emergency brake issue just started. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others" NO Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" Yes, the rear camera would show previous images on the camera or green screen with lines. When the emergency brake comes on without being initiated by me, other lights come on as well. Now (10/24/22) the engine light is on!

- Washington, DC, USA

The contact owns a 2022 Hyundai Tucson. The contact stated while driving 65 MPH, the vehicle lost motive power with the oil warning light illuminated. The contact attempted to accelerate; however, the vehicle failed to respond as needed. The contact pulled over to the side of the roadway and the vehicle was towed to the dealer to be diagnosed. The contact was informed that oil was not being pumped to the engine as needed which caused the engine to seize. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and suggested that a buy back for the vehicle. The failure mileage was 575.

- Tarzana, CA, USA

1. What component or system failed or malfunctioned, and is it available for inspection upon request" The engine will not start despite having the key fob with live battery on my person. 2. How was your safety or the safety of others put at risk? I was stranded 3 times in a week in dark public parking lots with limited cell reception. I had to abandon the vehicle to get to a warm, safe location, and as a single woman, did not feel comfortable staying with the car while other cars were loitering at night. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? The car has been with the dealer for 6 days now and they have not been able to replicate the issue and it has happened to me 3 times in one week. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" No, there doesn't seem to be any rhyme or reason why the car won't start. After a few hours, the alarm sometimes goes off, and the system resets, allowing me to restart the car. Given this car has a push button start ignition, there is no mechanical way to crank the ignition to start the car, so I am left with no recourse. The last time this happened, I had it towed to the dealership because even after waiting 3 hours, the system did not restart and I had no recourse.

- San Francisco, CA, USA

I purchased the vehicle 3/31/2022, & it left with recalls. I brought it BacK with 48hr, as the check engine light turn on, also the tires, dashboard, and overall the screen. Its been left at the dealer and no results. Also it has affected my life as a disabled handicap person as I'm unable to get to and from doctor appointment etc including to transport my scooter or wheel chair. its a nightmare. I came to purchase a car and was given a "lemon". with only 12miles purchased. I was directed by finance department to proceed with this matter for a resolution as we resolve this matter. The vehicle has been a problematic problem from the start. Definitely not standing firm on the customer Hyundai core value & warranty. The car is at the dealer and I'm temporally with a loaner on which I need to know all my option before we proceed. This is a very serious matter on which Hyundai is fully aware & infant they directed me to this process. My life was at risk as I was told to keep a car that is unreliable with a donut tire without repair. I felt as if I could've die if something was to happen to me within a week until service still count fix the tires as I was placed in jeopardy of my life & kids during Labor Day weekend.. Driving an unsafe vehicle. I was in concern since day 1!

- Hollywood , FL, USA

My wife was driving on the parkway north in New Jersey at approximately 65 miles an hour at about 3:45 pm. The car began to lose power, was shaking, and sputtering. Luckily, she was able to pull onto the shoulder and did not get hit by another car or truck. Once she pulled over, she let the car rest for about 10 minutes and started it up again. It hesitated, but started. Once she put it in gear, it stalled. she tried this two other times and it stalled each time. she waited for a tow truck and the care was towed to the dealer. The dealer invoice with repairs is attached.

- Warren, NJ, USA

purchased new 2022 hyundai tucson plug in hybrid in december 2021. In April 2022 the vehicle with 5500 miles experienced loud transmission bangs and lost ability to change gears. vehicle then stuck in neutral in driveway unable to select drive or reverse. had vehicle towed to dealership. once at dealer, mechanic unable to replicate problem but was able to pull up trouble code history. mechanic was told by hyundai corporate technicians to reset the transmission to fix problem. Fast forward to July 21, 2022, vehicle started to flash several warning indicators on dash including forward collision assist, no left turn signal and check engine light and transmission once again stuck in gear unable to select drive or reverse( approx. 9000miles) Upon disconnect of vehicle battery was able to get vehicle into gear to remove from garage. All warning lights remained on vehicle for 4 weeks before I was able to get a service appointment to fix problem. at dealer on august 16, 2022, check engine light reset prior to arrival, once again dealer unable to replicate problem and was told to return if vehicle exhibited issue again. August 22, 2022, upon leaving driveway and while in drive the vehicle just stopped in middle of roadway. once again stuck in neutral and all warning lights once again lit up. vehicle pushed to side of road to get out of roadway. upon starting the vehicle several times and turning off vehicle, finally was able to switch into gear. Roadside assistance was called to tow vehicle to dealership, where once again no loaner cars were available. The vehicle has exhibited lack of power on several occasions as well. specifically when going up a graded road. on one occasion vehicle would not go over 10mph. The fact that the vehicle died in the middle of the road while under operation is a huge safety concern as if i were on a freeway or expressway and it just stopped it could have been catastrophic. please look into this issue before someone gets seriously hurt.

- Mount Sinai, NY, USA