This Hyundai Tucson was 3 months old when the transmission started to shudder and miss gears. I immediately took it in to Ken Garff Hyundai and the service advisor drove the car and said nothing is wrong with the car and that the transmission needs to break in and sent me on my way. The Tucson did it again while in traffic and the vehicle would not go and I had to put my hazard lights on and let the car struggle in changing gears to get it off the road. The car was towed in to Peoria Larry Miller Hyundai and this was documented by that dealership of the car shuddering and that they thought it was from my insurance plug in device. I explained that the car did it before the plug in. I removed the plug in device and the car continued to shudder. On [XXX] while backing out of my garage the car began to shudder while in reverse and i continued down the road while the transmission refused to change gears. It almost sounded aa if the car was in neutral and the car would on go no more than 3mp. I had the gas pedal floored and the car would not go. I reparked the car back at my home and called Hyundai for a tow. The tow came and the tow driver stated that the seemed as if it is in neutral as he drove it up on to the tow truck. After getting the vehicle to the dealership i was told from the service advisor that this is an ongoing problem with Hyundai's dual clutch transmission and this sounds like the problem. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Buckeye, AZ, USA

Engine would not accelerate after stopping at a store. Limped home at 15 mph. Engine light came on a few miles from home. Vehicle would not stay running the next morning and had to be towed to dealership. Problem was an injector that the seal had failed on causing the engine to flood with gasoline. Dealership stated they had seen multiple injector failures and replacement parts now have a different part number implying the injector has been redesigned. Hyundai refused to replace the other injectors as they had not failed yet (they did replace the one that failed). I went ahead and paid to replace the other three. I live in Montana. If I had lost acceleration going up a steep incline or in heavy traffic or car engine failed to stay on in remote area in sub zero temperatures it could have had detrimental consequences.

- Billings, MT, USA

2023 Hyundai Tucson Hybrid Blue Issue: no power /accelerator response from slow speed. Since 4/23- 9 instances involving this issue none resulted in crashes but did result in near misses and 2 cases coasting off the edge of the road to avoid being hit. 6 of the instances happened when attempting a left turn in traffic at an intersection. 3 of the instances involved when trying to enter a traffic circle(turning right). In all of the instances the vehicle was in Eco mode. Description of Intersection Instances: Left turn with a blinking yellow arrow traffic light signal. I approached the intersection in the left turn lane slowed and was coasting forward. The vehicle had shift to EV mode. There was a gap in oncoming traffic and I hit the accelerator to cross. No response I pressed the accelerator to the floor and still no response. I lifted my foot off the accelerator and jammed it back down and had power but now the oncoming traffic was on me. Fortunately, only one car that did hit their brakes and honk. This same scenario happened two more times at the same intersection as well as three other times in city traffic. No power when entering a traffic circle: I approached the traffic circle slowed and coasted forward waiting for the cars in the traffic circle to clear. There was a gap and I hit the gas and not power. Pedal to the floor and no power. Traffic was on me and I turned the steering wheel hard to the right and drove off the edge of the road to not get hit. I had three passengers with me at the time. The same scenario happened two more times- where I hit the gas no response but these times I let up off the accelerator all the way and then pressed it down and had full power. This resulted in about a 3-4 second delay from when I first realized I did not have power to having power. I did check 4 a recall and none found. However, I did notice another complaint citing the same issue w-Hybrid on NHTSB site. but in error listed under reg Tucson.

- Madison, WI, USA

The Hybrid system has twice now failed on this vehicle shortly after starting it up. The second incident, I drove not even 300 feet, got onto a main, very busy road, and the system made a loud grinding noise, error messages came on the infotainment system and dash and the car stopped moving. It basically stalled without stalling. I was nearly hit from behind but thankfully a quick thinking pedestrian noticed and flagged the car behind me to stop. It took 5 minutes to get the car to reset and move but meanwhile it kept saying I need to hit my brake pedal to shift gears. I was in drive and I attempted to use my brake, to park, reverse, etc and nothing happened. As I attempted to drive to turn my vehicle around and get home it kept telling me I needed to hit the brake pedal to shift the vehicle (an automatic). This is the second time this vehicle stalled in three weeks and it has already once been repaired.

- Peabody, MA, USA

On four occasions in the last five weeks, I have been driving at relatively low speed (20-30 MPH), and when I attempt to accelerate, the vehicle will not accelerate when I press the gas pedal. The tachometer shows the RPMs are maxed out, but the vehicle does not accelerate no matter how hard I press the gas pedal. I have to pull off the road, turn off the vehicle, and restart to fix it. I am certain I have not accidentally hit any buttons or switches each time. I have tried changing drive modes (eco/normal/sport) and using the paddle shifters and that has no effect. Cruise control is off, and no other speed limiting system is activated. There are no warning lights or indicators when this occurs. This is incredibly dangerous, as I am unable to get up to speed on a main road. A few instances led me to be unable to successfully merge onto a main road, which has led to me almost being rear-ended on one occasion, and the most recent instance I was in the left lane of a main road and attempting to pass a large truck and could not maintain speed. I was fortunate to come upon a slight downhill slope and was able to coast across the right lane and get off the road, but it was a near-accident. The dealer service center was unable to diagnose the issue, and therefore could not repair it.

- Warrenton, VA, USA

When driving the car and stopping at red lights, stop signs, or any other stops in traffic on roads and expressways, the car engine randomly dies and cannot restart between 3 and 10 mins. There is no warning when this is about to happen -?" the car engine simply dies and dashboard lights come on. There is no response from the car after shifting in Neutral or Park by pressing the start button with foot on brake. After some amount of time, the car will start. There is no warning before this is going to happen. The dealer (Patrick Hyundai) has inspected the car three times and has not been able to reproduce the problem as this happens randomly. They told me on my third visit to not bring the car back as they don't know what the problem is. The first time this happened was 4 months after I owned the car and has happened in excess of 6 times I now fear for my life when I drive this car. I was almost hit twice. I was stopped on a busy main street at a red light when the light turned green and all cars drove away and the truck approaching me assumed I would drive also but couldn-??t because the car was stalled in the middle of the road. The truck veered away as last second to avoid my stationary car. The 2nd time was on expressway during traffic when stop and go driving was occurring and my car engine died again. As in previous case, vehicle behind me anticipated I would move forward like other cars but couldn-??t and stopped inches from back bumper.

- Palatine, Il, IL, USA

The contact owns a 2023 Hyundai Tucson. The contact stated while driving 45 MPH, the oil warning light illuminated. The contact pulled over and checked the oil level and became aware that there was no oil in the engine. The contact added oil however, the failure recurred. The vehicle was towed to the dealer and the dealer confirmed that there was no oil in the engine however, the cause of the failure was not found. The vehicle was not repaired. The manufacturer was contacted and stated that an oil consumption test needed to be performed. The failure mileage was 49,000.

- Killeen, TX, USA

Oil pan leak. A lot of owners aren-??t aware their oil pan is leaking cause the dealer offer a 3 years complimentary service. I only notice mine is leaking cause I changed my own oil now. Dealers won-??t fix anything under warranty unless customer tell them. Hyundai mechanic on YouTube say it-??s a common problem.

- Garden Grove, CA, USA

On 6/26/23 I was driving the Tucson. I was stopped at a light in traffic waiting for the light to change. Suddenly the icons on the dashboard turned red and started flashing. A message -??Engine Off-?? displayed and the engine turned off. I was able to turn the vehicle back on and was able to drive. The automatic shut off of the engine while driving presents a safety risk.

- Sun Lakes, AZ, USA

Unknown what fails. After driving approximately 30 minutes on a highway, car suddenly stops accelerating and bucks a bit as it slows. Must turn off car and turn it back on to accelerate again. Happens on the highway frequently. Very dangerous as there-??s no way to accelerate. Only stop. It-??s like it can-??t find a gear and the engine revs. It happened 6 times during a 2.5 hour drive.

- Glastonbury, CT, USA

My son was backing out of a parking spot at a strip mall. He released some pressure on the brake and indicated that the car lurched backwards and even though he reapplied full pressure to the brakes, he hit the car at the curb resulting in damage to our Tucson, but luckily not the to the other car. The Rear Cross-Traffic Collision-Avoidance Assist system did not engage, but my son indicated that the rear distance warning system did beep. I am concerned due to the sudden acceleration/lurching incident my son experienced and this is not acceptable in any car. I ask the NHTSA to see if other Hyundai Tucson or Kia Sportage owners, especially with the Hybrid engine are experiencing this.

- Lexington, MA, USA

I purchased a new vehicle in February 2023. After a month and a half, I traveled to Washington DC on a pleasure trip. After my work/vacation trip when I am returning back to home all of the sudden, there was heavy smoke from the hood and eventually tried to turn off the engine but the car didn't respond, and when I tried to open the Hood in order to cool down the engine I see fire already in the engine. So, there was no intimation on the dashboard about the fire or not even an alert. Moreover, the engine didn't turn off even after trying to turn it off 4- 5 times. I was really worried about what would happen if the door locks stops working

- Charlotte, NC, USA

The contact owns a 2023 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the vehicle hesitated to accelerate and then lost motive power. The check engine warning light was illuminated. Additionally, a fuel odor was detected while driving. The vehicle was able to be restarted, and the contact drove to a nearby gas station to park the vehicle. The vehicle was towed to the dealer; however, the vehicle was not yet diagnosed or repaired. The contact stated that the dealer had previously replaced two fuel injectors due to water in the fuel tank. The manufacturer was not made aware of the failure. The failure mileage was approximately 8,000.

- Monticello, FL, USA

Attempt to accelerate and will not accelerate and car start overheating and bad odor smog coming out from the exhaust. Dealer foud the following, concern scanned for codes, found codes P111100, P030000. P030100, P030300, P030400 abnormal combustion detection for any cylender, ramdon cylinder misfire detected cylinder #1,2,3,4 misfire detected, performed fuel test found alcohol at 5% found fuel was discolored and smell varnish or contaminated, dealer still have the car and they want us to pay for the repairs and void the warranty, we contact the state to do a fuel test to the gas station and everything is with the guidelines base on the report, looks like the car is deffective and something needs to check

- Sacramento, CA, USA

I leased my 2023 Hyundai Tucson from your Authorized Dealership South Shore Hyundai in NY March 18,2003. I received the vehicle with 34 miles on the digital Odometer at approximately 1750 eastern standard time. At approximately 2030 eastern standard time with the vehicle at 62 mile on the digital Odometer. I was Driving with my family, which is made up of my wife, daughter 22yrs old and son 14 years old on the Wantagh Parkway South approximately location 40.740739, -73.544842 at the speed limit of 55 MPH. I began to hear knocking noise from the front of the vehicle that progressively got louder. Then immediately the check engine, brake, oil, key with car, battery, open doors, every light that the dashboard has came on. Immediately the whole vehicle lost power and I could no longer accelerate. The steering wheel got stiff and the vehicle had no response to brakes. The vehicle started stuttering.The engine died, RPMs at 0 and no response on the accelerator, brakes and steering. The vehicle would not start.I tried push start several times start the vehicle, remote start, app start and putting the remote close to the push start with no results. I felt helpless and in a very dangerous situation that this brand new Hyundai vehicle put my family and me in. My family-??s life was at the mercy of a 62 mile brand new 2023 Hyundai Tucson Sel that I received less than 2 and half hours ago from a certified dealership South Shore Hyundai in NY. We were stuck in the left lane in the middle of the Wantagh Parkway south bound with nowhere to go with the median divider to my left and to the right it was a fully active lane of on coming traffic in order to reach the safety of the shoulder. My family and I had to cross a full active lane of on coming traffic to get to the shoulder safely. We were able to get to the shoulder safely.The safety hazards presented by this vehicle created is dangerous to America Families. Brand New vehicle should not suddenly shut off.Put the public in danger.

- Freeport, NY, USA

Two days after purchasing this vehicle BRAND NEW, I received a "Low Oil" alert. I took it to the nearest Hyundai dealership where a salesman filled the engine with oil. Only a couple hundred miles later I received another "Low Oil" alert. I have been attempting to solve this issue with Hyundai, however, they are insistent that I must complete an oil consumption test, which takes 3,000 miles of testing to complete. This vehicle is burning oil, and burning oil FAST. I do not know where the burnt oil is going, but if it is going through the exhaust system and catalytic converter this may be a FIRE HAZARD.

- Bad Axe, MI, USA

I was driving to work taking the same route I have since I purchased the vehicle when I lost acceleration on the road. I was unable to go above 40 MPH and I had the gas pedal pressed all the way to the floor. I was going uphill and the lack of acceleration could have caused an accident if there was not enough space behind me and the vehicle behind me.

- Cortland, NY, USA