Driving home on I 95 about 70 miles per hour vehicle started slowing down on its own. After heard loud noise vehicle shaking then noise and large cloud of smoke billowing from car. Had to pull over and fire department came. Found oil all over outside of engine and engine will no longer start. Triple a towed to shop and shop says engine seized and connecting rod went perfferatted block.oil changes performed regularly and always used 100 percent synthetic oil.

- Port St Lucie, FL, USA

Car was parked. Went to start it up to and car wouldn't start. Engine kept turning over and over. First few times this happened, I was eventually able to get the car started but it would shake, vibrate, and hesitate while driving. Eventually, I went to start the car from park and it wouldn't start. I was able to get it started by jumping it, but the vibrations, shaking, and hesitation continued. I took it to the dealership and was told the problem of were the result of low fuel due to a failure with the high pressure fuel pump. While driving home on the highway, the vehicle experienced a sudden loss of speed (I.e. 65 mph to 20 mph) and significant decrease in power, which is very dangerous. Car has 71,000 miles on it. All routine services have been performed on the car at the dealership and oil has been changed routinely as specified.

- Winston-Salem, NC, USA

Engine went to idle at a traffic light and would not respond when light changed to green, check engine light came on. I idled to the side of the road, shut off engine and restarted it. It seemed to be ok but check engine light was still on. Check engine light went out the next day. I took it to dealer for repairs ( a week later was the soonest they could get me in) they did an software update and cleaned the etc motor per "technical service bulletin #133 rev. 11/27/2013" I'm keeping my fingers crossed that this fixed the problem.

- Spanaway, WA, USA

Car stalls at low speeds, refuses to go over 60 mpg and check engine light comes on. Lose power at speed (on freeway) and tachometer goes to zero. This has happened many times and is getting to become a safety concern. Have taken it into dealer who cannot find a problem with it, but I have two teenage daughters and I don't feel safe with them driving it. Twice while driving on freeway the vehicle had a braking response when the accelerator was pressed. My daughter once had to hussle over to the shoulder in heavy traffic to turn the car all the way off and back on to reset it. Many times it stalls while sitting at traffic lights.

- San Clemente, CA, USA

Driving vehicle on highway, suddenly lost power, would not accelerate. Stopped in breakdown lane, shut vehicle off and restarted. Vehicle ran ok but check engine light was on. Due to vacation took vehicle to dealer on 10/8. service manager said there was a recall for ECM and based on code from vehicle that was probably the problem. When I asked why I was not notified he said because it was not a safety issue"???" to me loss of power on the highway is a safety issue. Now, 10/16 my wife confronted the same problem and on the highway which she said caused a real safety problem, she was in the middle lane and cars were bearing down on her until she could finally move over into the breakdown lane. Again, she was able to restart the vehicle and very anxiously able to get off the highway. After stopping and restarting two more times she was able to make it home with the check engine light on again. Upon seeing other similar complaints on the web, I am going back to the Kia dealer to try and get this fixed, however, I think that the NHTSA needs to force Kia to do a recall to fix the problem before someone gets seriously hurt on the highway, the service manager at the dealer is at a loss as to what may be causing this condition but it is obviously a problem others have encounted.

- Onset, MA, USA

Vehicle suffers catastrophic high pressure fuel pump failure on highway resulting in loss of power. Dealership replaced part. This is a high pressure direct injection engine. Engine has suffered extreme noise, vibration, and harshness issues since new. Sudden loss of power at highway speeds is potentially life threatening. The reliability of this direct injection fuel system appears poor. Our 2013 only had 24K miles at failure.

- Parker, CO, USA

We leased 2013 Kia Sorento in Aug 2012 after driving few months engine starts to shut down by it self, the first time shuts down on my driveway, I didn't contact dealer at that time, after few months I was driving on street and engine shuts down again and I couldn't put the car in park to start the engine again, called aaa tow truck to tow the car to dealer, after few days the couldn't find any problem but dealer contacted Kia center for help and they changed parts and hoping everything is fixed but after few months the problem start again and engine shuts down again and again and again almost five times in one month, the last time engine shuts down when my wife was going to drop off our kids at school and all the cars stopped in the morning rush hour, they were panicked and we contacted dealer again for second time and took the car in for repair, after few days test drive and test everything they couldn't find anything and they did connect a recording device to our car to record the fault or code when engine is shutting down, this is inconvenient all the wires are hanging from that device. We explained this issue to dealer service manager, sales manager and it is high safety issue, I am wondering if those managers will drive this car or their family will drive this car around, it is very easy to tell us we couldn't find anything, thank god we didn't involve in any accident but if happens I am wondering what kind of answer will get from dealer. So we are going to drive around and next time will be third time and by California lemon law they have to take this car away and return our money or give us a new car.

- Glendale, CA, USA