I was driving home from work on the highway, and approximately 40 minutes into the ride the car struggled to accelerate while I was driving on the highway at about 65-70mph without a warning light or any type of warning display on the dashboard. The car hesitated when I put my foot on the gas to pass another car, or if I slowed down in traffic, it struggled to accelerate above 20 - 40mph. When I reached my exit, and came to a stop light, the gas pedal was all the way to the floor just so I could get up enough speed to go across the light, as well as accelerate so the car in back on me could go as well. The engine would hesitate, and when it did finally reach the right speed it was still not a smooth ride. When I reached my destination, I turned the car off, and turned it back on about 2 hrs later. The car started (with a little hesitation in the engine), although it still struggled to accelerate past 20mph. It was also hesitating, and felt as though it would stall. I drove the car to my mechanic, about a 15 minute trip on local roads. There were a couple of uphill battles, where I could barely get the car up the hill. My mechanic checked to see if there were any codes from the computer, and the code came back as 'turbo under-boost'. the turbo charge is dead. I have a turbo charged engine. Therefore, since the turbo booster is dead, it basically leaves the engine without little power!

- Norristown, PA, USA

The contact owns a 2013 Hyundai Sonata. The contact stated that the gear shift failed to engage into the park position without warning intermittently. The contact stated that the vehicle rolled slightly before the park position was engaged. The vehicle was not diagnosed nor repaired. The vehicle was not included in NHTSA campaign number: 14V434000 (power train). The manufacturer was not notified of the failure. The failure mileage was 33,600.

- Ocala, FL, USA

Engine suddenly without any prior indicators stopped working while driving 60 mph on hwy. Lost all power including power braking and steering.

- Vassalboro, ME, USA

When turning off car w push button, if not in park car will roll roll roll a mild alarm will sound but it will still roll let U out of car and roll.

- Oswego, IL, USA

The contact owns a 2013 Hyundai Sonata. While driving 40 mph, the vehicle hesitated to accelerate. The failure recurred numerous times. The vehicle was taken to a dealer, but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 34,000.

- Gulfport, MS, USA

Wonders extremely bad. I end up in other lanes. Cannot control car. While brake the car sometime turns or during acceleration. At cruising speed wonders and constantly correcting. I almost hit car all the time. Steering is of center.

- Tamarac, FL, USA

The contact owns a 2013 Hyundai Sonata. The contact received a notice for NHTSA campaign number: 14V434000 (power train). The contact stated that the gear shifter failed to shift completely and that the tires were constantly losing air. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.

- Accokeek, MD, USA

The contact owns a 2013 Hyundai Sonata. The contact stated that while reversing, the shift gear would not move from reverse. The vehicle was taken to the dealer, who diagnosed that the shift cable failed. The vehicle was repaired but the failure persisted. The contact mentioned that the vehicle was included in NHTSA campaign number: 14V434000 (power train). The manufacturer was notified of the failure. The approximate failure mileage was 18,000.

- Miami Gardens, FL, USA

The contact owns a 2013 Hyundai Sonata. The contact received notification of NHTSA campaign number: 14V434000 (power train) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

- Richmond, VA, USA

I own a Hyundai Sonata 2013 and on Friday, September 12, 2014 at approximately 1:45P.M., I was driving less than 5 mph in a parking lot. Upon entering into a parking space and placing the car in park; the car failed to maintain its parking status and jumped into a small shrub bank inches in front of the selected parking space. As a result, the car also damaged another car that was diagonally positioned across from my car. I informed the police of this incident (as stated above) and notified the insurance company. I later learned that there was a recall on the car and conducted some research and found that the corporation had distributed a notice back in July 2014 about the car's automatic transmission switch cable recall; however, I did not receive my recall letter until a week after the incident occurred. The recall letter describes issues with the gear as it relates to "P" parking. (note: I did notice that there is a contrast in the descriptive information I found in my research for the recall and the actual notice I received from Hyundai, but it all relates to "P" parking. The online information closely explains what I actually experienced). After receiving the recall letter, I notified Hyundai about the incident and was informed that I would receive a packet that requires me to send them back photos of the vehicle damage, and 10 other items (if applicable) related to the incident. Hyundai would then conduct an investigation that could last anywhere between 6-8 weeks. I understand that Hyundai will notify me and the insurance company of the findings from that investigation once it is completed.

- Upper Marlboro, MD, USA

The contact owns a 2013 Hyundai Sonata. While driving approximately 40 mph, the gear shifter would independently move from drive to first gear, causing the vehicle to decelerate. The failure occurred on numerous occasions. The dealer was unable to diagnose the cause of the failure. The vehicle was repaired according to NHTSA campaign number: 14V434000 (power train). Also, when attempting to start the vehicle, the key became lodged in the ignition and failed to turn. The contact had to make several attempts before the vehicle restarted. Lastly, the front driver and passenger seat heaters would independently activate. The vehicle was not diagnosed or repaired. The manufacturer was unaware of the failures. The approximate failure mileage was 17,000.

- Newnan, GA, USA

On Monday September 22nd around 540pm on the 10 fwy going eastbound right before towne ave. As the traffic on the freeway began to slow I came to a complete stop. About 5 seconds after stopping I noticed that the car began to roll forward. I applied more pressure to the brake pedal however the car continued to slowly roll. I then stepped on the emergency break and the car did not stop. The car slowly rolled about 8 feet before it stopped on the back of a big rig trailer bumper. I called 911 and explained that I did not want to move the car as I was not sure it would stop. The chp advised that they would send out a tow truck to get me off the freeway. I was removed from the freeway and I had aaa tow my car to the nearest Hyundai dealer in glendora ca. They called me the next day and said they ran a full test on the car and could not find anything. However they did fix the recall on my car for the rollaway risk and shift cable to the transmission. I asked them do you think this had anything to do with it. The dealer indicated no that maybe I was driving fast and the ABS took over. I told him that I had more than 8 feet between the big rig and myself when I came to a full stop and that I was not going more than 15-20 miles since traffic was slow. The dealer service agent said nothing showed up on the scanned test and they drove it and is fine.

- Victorville, CA, USA

On August 8, 2014 at approximately 5:00pm, my vehicle was parked on a flat gravel driveway. Front tires were still turned right from initial parking of car. I got in the car and started it when I realized I had left something in the house and exited the car while it was running and in park. Within 2 minutes, while I was exiting the house, I heard a thud and saw the car backed up against a pine tree on the property. The car had traveled in a U pattern approximately 100 before hitting the tree. Entering the car to turn it off, I see that shifter is in park; I turned off the car so that I could assess the damage of the car and see if I could drive it from where it had stopped. I started the car; drove forward about 20, turned off the car and looked at the damage to the rear quarter panel of the car. The left muffler is pushed in, the bumper cracked, the tail light (still operational) cracked. Rear quarter panel seems to have buckled, I am unable to determine any damage to the under-carriage. The trunk still opens and closes without problem, but there is substantial damage to the rear driver??S side of the car. The car is drivable; but am fearful the car is a danger to me, my family and anyone who could be near the car. A call was placed to Hyundai and a complaint filed (1-800-633-5151). I have learned that there is a recall notice for Hyundai Sonatas regarding shift cables disengaging and I am awaiting the paperwork packet from Hyundai to complete my complaint in writing so that I can see if this make/model is part of the recall.

- Danbury, CT, USA

The transmission slips.

- The Villages, FL, USA

The contact owns a 2013 Hyundai Sonata. The contact stated that while in park or drive, the vehicle rolled in reverse intermittently. The contact mentioned that the vehicle was shifted to neutral and then park to prevent the vehicle from rolling. The vehicle was towed to a dealer, who was unable to replicate the failure. The vehicle was not repaired. The VIN was not available. The manufacturer was notified of the failure. The approximate failure mileage was 7,000 and the current mileage was 11,000.

- Cliffside Park, NJ, USA

The contact owns a 2013 Hyundai Sonata. The contact stated that while attempting to shift into park, the pin disengaged from the gear shifter. The failure recurred twice. The vehicle was towed to the dealer where the mechanic diagnosed that the shift gear box was fractured. The vehicle was repaired. The manufacturer was made aware of the problem. The VIN was not available. The approximate failure mileage was 15,000.

- Danton, OH, USA

First occurrence I was sitting at a stop light and started to move, car lunged forward with an unattended acceleration. Second occurrence I was at an intersection waiting to proceed through, stepped on the gas pedal and car did not accelerate. Third occurrence was in Kansas and my brother was driving. It surged again and we both noticed it. Fourth occurrence resulted in an accident in ringgold ga on 10-28-13. I was starting to park in front of the church, the car surged fast and I tried to stop it with my brake, but it continued into the concrete building resulting in my serious injury and $6,000 damage to my car. With great concern about this car, I went to the dealer and asked if they had ever heard of this before and they said, "no".

- Buford, GA, USA

Where do I start. This car has been more pf a pain than anything. After dealing with the steering sensitivity issue which resulted in new tires at 12000 miles, I now have a transmission issue that the dealer cannot diagnose. Beginning one month ago the car started making a loud whooshing noise eminating from the underside of the car. Thought nothing of it as I assumed that it was the new tires. Then came the transmission clunks after rapidly accelerating then decelerating. A couple of weeks ago the car, on several occassions, would clunk after starting and putting it into gear. Then the transmission would continue to shift hard through every gear, both during the upshifting and downshifting process for appx. 1.5 miles, then it would resolve itself. I also noticed that the car often fails to accelerate when attempting to overtake other vehicles. The car has been at the dealer for almost a week now and they are unable to determine what is causing this (cannot duplicate during test drives and no codes stored in the computer).

- Fairview Heights, IL, USA

I pulled into a parking space and shut off the engine with my push button start, without putting the shifter into the park position. The vehicle allowed me to exit and the car started rolling backwards. I tried to re-enter the vehicle to engage the brake and was knocked onto the pavement by the driver door. I was forced between the bottom of the door and the pavement as the vehicle rolled past me and entered traffic, crossed to lanes and was stopped by a curb and a speed limit sign. Vehicle bumper was dented. I suffered several bruises, a sprain, a large abrasion, and pulled back muscles. Went to the er and missed a couple days of work. Injuries do not appear to be serious at this time.

- Sullivan, MO, USA

The contact owns a 2013 Hyundai Sonata. The contact stated that after shutting off the vehicle using the push-to-start button, he noticed that the vehicle was able to shut down without being secured in park. As a result, the vehicle rolled away. The contact was able to stop the vehicle, avoiding an incident. The vehicle was taken to the dealer where they advised the contact that the vehicle was performing normally. The manufacturer was contacted and offered no assistance. The failure mileage was approximately 300. The current mileage was approximately 1,000. The VIN was unavailable.

- Aventura, FL, USA