The speed sensor located inside the transmission malfunctioning which means I have to start by shifting 1 and second gear then when the vehicle reaches 40 in will go into 3rd and the D lights up...I will only have 4th gear no 5th so the engine is at 3000 rpms at highway speeds! it uses more fuel and oil! been driving it this way for 3 years now!

- Baldwin, WI, USA

The contact owns a 2007 Kia Sorento. The contact stated that while driving at various speeds, the ESC and the check engine warning lights illuminated and the massage "limp home" would display before the vehicle's speed would suddenly reduce to approximately 15 mph. The contact indicated that the failure had occurred on several occasions. The cause of the failure was not determined. The local dealer grand Kia of denver co. And the manufacturer were notified of the failure but no assistance was offered. The failure mileage was 139,000.

- Westminster, CO, USA

My 07 Kia Sorento when trying to enter the state highway. When you push down on the accelerator pedal. The viechel state to accelerate and then all of a sudden the ESC. Light comes on and the SUV. Goes into safe limp mode. Where it will not accelerate and will not climb over 20mph. For a very long period. My family and I have been in a few situations where we were almost hit. Looking online I can see that this is far from being a isolated ordeal. And that because of the age of the viechel. I am reading where more and more people are dealing with the same issue but not going to the dealer because of the cost involved. With the number of the viechels sold there have to be quite a few that have resulted in a accident that involves bodily injury. If not god forbid even death. I just hope this reaches the desk or screen of someone who can investigate this matter. A lot better than what I am capable of doing.

- Waterboro, ME, USA

I own a 2007 Kia Sorento LX with 47,760 miles on it currently (today's date 09/10/2014). The first symptoms happened a few months ago where my car would hesitate upon acceleration and/or I would be traveling between 30-45 mph and the car would begin bucking/jerking for a few seconds. This was very intermittent and random. If I took my foot off the gas pedal, then reapplied the gas the car would be fine. Then that symptom went away and I gained a new symptom. I was driving approximately 30 mph, when all of the sudden my ecs off light and check engine light came on simultaneously, and I instantly lost power/acceleration. It appears that when this happens the car goes into "limp home" mode? it has happened twice to me in the past 3 days. This is very dangerous because the loss of power/acceleration is instant, it happens without warning, and it does not matter how fast you are going. This could cause loss of life if it happens on a highway at a high rate of speed. All of these symptoms began to appear right after I had the recalls done on my vehicle (I.e. brake switch and ECM upgrade). My car was fine before I had the recalls done.

- Greeley, CO, USA

At highway speeds, vehicle check engine light comes on and the power from accelerator greatly reduces. Appears to go into 1st gear, and vehicle only able to drive at 5mph. Stopped car on shoulder, turned engine off and parked. Restarted vehicle with no power or transmission problems; check engine light remained on. After 5 minutes of driving, repeat in activities. Occurred 5 times within 20 mile drive. Very unsafe to have occur on highway.

- Bowie, MD, USA

The contact owns a 2007 Kia Sorento. The contact was driving 35 mph when the vehicle began to shake abnormally with the illumination of the ESC and the check engine warning lights. The vehicle was taken to the dealer who inspected the vehicle and informed her that the brake switch and throttle position sensor would need replacing. The manufacturer was notified who stated there were no recalls for the vehicle and offered no further assistance. The failure mileage was 70,436.

- Tampa Bay, FL, USA

ESC and check engine light comes on my 07 Kia Sorento and loses power. This is a safety concern when driving on freeway speeds. I experienced this for the third time since owning the vehicle. Dealer repaired the throttle positioner two times and now for the third time, dealer will charge you if mileage is +60K. I believe this is a defect that Kia is trying to be mum about it. There are plenty of consumers on the Kia forum expressing disgust about the problem and the safety implications that can happen. I demand an investigation on this matter.

- Houston, TX, USA

The contact owns a 2007 Kia Sorento. The contact stated that while parking the vehicle with her foot on the brake, the vehicle suddenly accelerated and crashed into another vehicle in the driveway. There were no injuries. The vehicle was towed to an authorized dealer who would inspect the failure. The contact called the manufacturer who stated that a representative would return his call. The failure mileage was 60,456.

- Chaickamauga, GA, USA

When I press on the accelerator to increase my speed (like when merging, for instance), the car reacts as if I put it in neutral. It stops all forward motion for at least a second. Sometimes as long as five seconds. This has almost resulted in being hit from behind or the side several times. I have had it into the dealership several times, and have taken their mechanics for demonstration rides several times. I've even contacted their home office. Each time the answer is the same, "we can't find anything wrong. It must be you." I fully expect to be involved in a collision in the future caused by this dangerous defect. I can't afford to buy a new car, so I'm stuck with it. I hope you can help.

- Morrison, CO, USA