On 05/11/2024, I accelerated onto the freeway at which point my vehicle would no longer go past 50 mph with the pedal to the floor. I had my two small children in the car at the time. It was dangerous as cars around us were going 65+ mph. The check engine light started blinking when this was occurring. Prior to that the check engine light had been on because the dealership claimed they didn-??t know why it was triggering and that they have to take my engine out and replace it just to explore the issue. I don-??t have the money for that. It has a knocking sound, a pungent fuel smell and it still won-??t accelerate. I only have 85k miles on the car.

- Beaverton, OR, USA

Almost got killed!!! This car is dangerous!!! I feel lucky I can still write to you. Hyundai 2019 Tucson (TL) 2.0L has been plagued by a recall and related known defects that create dangerous and life-threatening situations on the highways 3 times in 10 months for us!!! Vehicle year, make & model: Hyundai 2019 Tucson (TL) 2.0L car Approximate mileage: Current ~37,000 How many repairs visits to the dealer? total 4 (First time was Hyundai recall, 3 times Check engineer light flash on interstate highway and the car went to limp mode and reduced speed drastically) A short description of the problem: Car has been plagued by a recall and related known defects that create dangerous and life-threatening situations on highway. 1). Recall on [XXX] (with only 19395 miles on it); 2). [XXX]. The car only had 22036 miles on it, on [XXX] near San Francisco; 3). [XXX] while driving on [XXX] north of Portland; 4). [XXX] during the afternoon pre rush hour traffic before 3:00 PM on highway [XXX] near Tigard (currently undergoing road construction with no shoulder, and many cars driving at high speed) Almost hit by a car behind me. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Kalama, WA, USA

I have a Hyundai Tuscon 2019, which was pre-certified by Hyundai. This particular car was part of a lawsuit because of a knock sensor issue. The lawsuit information is here: [XXX] The knock sensor failing is not really what causes the safety issue. The engine symptoms when the sensor fails is the issue. The engine goes into "safety mode" which limits the car to a significant slower speed. The problem is that Hyundai has now tried to fix this issue twice on my vehicle, and the knock sensor continues to fail. To be clear, they've replaced the sensor twice. Based on the lawsuit, the court mandated them to fix the knock sensor. They have done that free of charge, but the sensor continues to fail. To me this sounds like a manufacture issue. It is incredibly dangerous when you're on a highway and the sensor fails. It happened to me, and it was almost catastrophic. The car slowed down and there is nothing you can do about it. I noticed there was something wrong very quickly and put my hazards on. If I didn't, I may not be writing you here. You could easily get into a significant accident, and from that could lead to injury or loss of life. I am asking for a review of this. I have my service records as well as recorded conversations with Hyundai corporate regarding this issue. Service records are attached. I live very close to NHTSA HQ and willing to come in if necessary. To me, this is concerning enough for that.. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Chantilly, VA, USA

At approximately 69000 miles my engine stalled as I was pulling onto a highway and would not accelerate beyond a low mph. I turned back into gas station I had left and checked the oil. It did not register any oil and had a burning smell. There were never any dash lights indicating low oil. I put almost 2 quarts in vehicle. I then proceeded to drive as it seemed okay. I have had oil changes where the technicians have told me I was low on oil even though it was a normal time frame for oil change. I recently checked my oil just right as my oil change is due and the oil level did not register, nor were there any low oil indicators on dash. I had to add a quart of oil. This poses a hazard/safety problem. If not checked more often than normal, oil could go low and stall again. If pulling into a busy traffic area and a stall occurs, there could be an accident etc not to mention damage to the motor/engine itself. I have to frequently check the oil levels which should not have to happen for a vehicle with 70k+ miles.

- South Lebanon, OH, USA

I have been experiencing serious safety issues with the 2019 Hyundai Tucson I purchased that have been ongoing since February of 2023. The check engine light comes on, begins to flash, and the car goes into 'limp mode' and will not allow me to accelerate faster than 45/50 mph. Consequently, it will further stall on hills due to the inability to accelerate. Below is a brief timeline of this incident: - February 21: Bring in vehicle to dealer as recommended for oil change, tire rotation, cabin air filter, and a recall. The recall issue was as follows: 966 engine monitoring logic, 22-01-028H-1, caused by ecm update, 966 campaign, ecm update op code 10d021r9.3 - February: 24: Check engine light comes on, flashing, and unable to accelerate past 45-50 mph. - February 27: Return to dealer and bring in vehicle for check engine/no acceleration issue. - March 2: Pick up vehicle from dealer - March 8: Check engine light comes on again, flashing, and unable to accelerate past 45-50 mph. - March 9: Return to dealer and bring in vehicle for check engine/no acceleration issue. - April 5: Pick up vehicle from dealer - April 8: Check engine light comes on again, flashing, and unable to accelerate past 45-50 mph. - April 10: Return to dealer and bring in vehicle for check engine/no acceleration issue - April 25: Pick up vehicle from dealer - May 3: Check engine light comes on again, flashing, and unable to accelerate past 45-50 mph. - May 4: Return to dealer and bring in vehicle for check engine/no acceleration issue; car is still at dealer as of May

- Issaquah, WA, USA

The contact owns a 2019 Hyundai Tucson. The contact stated that while his wife was driving at low speeds, pulling into a parking spot on an incline, the vehicle accelerated and failed to stop. Then the vehicle traveled through several 15-gallon pots with trees, a patio, elliptical machines, and a wooden fence. The driver veered to the left, went down a mountain approximately 30 feet, continued down the hill, and crashed into a pine tree where it came to a halt. The occupant in the front passenger seat sustained a concussion. The driver sustained injuries to her lip and medical attention was provided. There were no warning lights illuminated. The vehicle was towed to the police station. A police report was filed. There was no reported fire. The driver's side front and passenger side front air bags were deployed. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, who provided claim number 21135585, and had the vehicle inspected but indicated the brake pedal had not been depressed but no additional assistance was provided. The failure mileage was approximately 27,000.

- Glendale, CA, USA

The contact owns a 2019 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the vehicle hesitated to accelerate while the engine revved loudly. The vehicle then jerked forward while driving. Additionally, there was an abnormal rubber odor detected. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The failure recurred, and the vehicle was taken back to the dealer, where it remained unrepaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was 10,724.

- Bronx, NY, USA

I was merging onto a highway at high speeds when the car stuttered. The check engine light began to flash and I lost acceleration. I could push the gas pedal to the floor and the car would not accelerate at all. The car lost it's speed and I could not go anymore than 30mph, and it would not go higher than 2rpms. It put me and my baby (who was in the backseat) in danger as we were going fast on a highway and out of nowhere the car lost speed and I could not accelerate. I could've easily been hit by another driver going the regular speed limit. I drove it to the dealership that just happened to be down the street, and the car struggled to accelerate from a complete stop, as well as in general. From a complete stop, the car would sputter and jerk when pressing on the gas pedal. The dealership diagnosed it as a faulty Knock Sensor. They said they would replace the sensor as it was still under warrenty. When I left the dealership, the check engine light was off and the car was driving fine. Fast forward to the next day, I was driving again on a highway at about 65mph, when the SAME thing happens. The car stuttered, lost all acceleration, and the check engine light was flashing. I ended up driving it home (about 10 miles away) and the whole time I could not go faster than 30mph without the car shaking. This time the car would not go higher than 1.5rpms. I checked the engine at home and a P1326 code came up, which is a code for the Knock Sensor. I called the Hyundai dealership that I originally went to and they said there was nothing they can do about it at the moment since they had just replaced it. Prior to all of this, there was no warning sign at all that this was a potential hazard. It happened so suddenly and both times it happened put me in a dangerous situation.

- Molalla, OR, USA

The contact owns a 2019 Hyundai Tucson. The contact stated that the vehicle was consuming oil. The contact stated while her daughter was driving approximately 40 MPH, the RPM increased from 2,000 to 3,000 RPM. There was no warning light illuminated. The vehicle was taken to the local dealer where they were unable to duplicate the failure. The vehicle was not diagnosed or repaired. The vehicle was taken back to the local dealer and diagnosed that an oil change was needed, and the PCV valve needed to be replaced. The vehicle was repaired however, the failure recurred. Additionally, while her daughter was driving the vehicle hesitated and failed to accelerate. The vehicle was taken back to the local dealer and it was determined that an oil consumption test needed to be performed. The manufacturer was notified however, no further assistance was provided. The failure mileage was approximately 41,580.

- Cincinnati, OH, USA

September 2019, four months after we purchased it brand new. The vehicles stopped responding to my acceleration on highway speeds when all the technology screens went out in the vehicle. While at a red light the vehicles RPM's will visually go up and down and the vehicle shutters as if it is going to turn off. It has unintended acceleration when I'm sitting at a standstill and go to accelerate the vehicle will jump so to speak once the accelerator is engaged. Unfortunately my videos are too long to upload but I do have confirmation of 2 of the 3 concerns but am unable to record the highway concerns due to obvious safety reasons.

- Orlando, FL, USA

Driving from Liberty, mo. To Chicago, smart cruise control set at 70-75 mph, very little traffic, after around 2 1/2 hours of driving, about 40 miles from hannibal, mo. Car accelerated to 90 mph by itself. Vehicle cruise control would not shut off by cruise button, cancel button, or brake. Got off at first ramp with car running at 90 mph by braking hard. Pulled over and put car in park. Motor surging at high RPM, would not stop running up and down. Cruise indicator lights off. Shut off engine. Called blue link, referred to nearest dealer, no codes showing on car. After half hour restart car, no problems. Checked floor mats and removed. On return trip around 2 1/2 hours from start at around 70-75mph setting, the car accelerated to 90mph by itself, with the smart cruise control on, no traffic, no floor mats, and turned cruise control off, cruise button, cancel button, brake, but engine kept running at 90 mph. Braked hard, pulled over, engine surging in park. Shut off, waited 1/2 hour, no further problem on way home. Dealership couldn't find any codes or engine or cruise control problems. Noted mats in car, didn't comment when when stated they were informed mats out of car when second occurrence.

- Liberty, MO, USA

2019 Hyundai a Tucson was stopped in driveway with auto hold on while speaking with an independent witness. Feet were not touching any pedals and auto hold was engaged with verification on dash. Vehicle suddenly accelerated down driveway and into street traveling towards mailbox across street. Was able to apply brakes with a lot of pressure and stopped vehicle. Vehicles RPM's and speed went up like pressing hard on gas pedal. Vehicle has 1800 miles

- Schererville, IN, USA