As I would drive the vehicle a rattling noise would occur when every time I accelerate from stopping at a traffic light. Then the engine light appeared on the dash board. When I went to have the engine light checked the results came back about an oil gasket. I then got an oil change soon after. The rattling noise and the same acceleration problem still occurred. Soon after it gotten worst to the point couldn-??t go faster then 10 mph and then the car kept shutting off.

- South Chesterfield, VA, USA

On NOV. 26TH 2021, I was driving my car and upon trying to accelorate, my car felt as if it was about to stall out. I pressed the gas and I barely moved. My engine light went on immediately and it's constantly flashing now. The cars RPM's do not go past 1-1/2 RPM's. I can not pick up speed like before, like I should. My car now hesitates and I'm scared to drive it. I feel that it's dangerous cause I can not keep up with traffic. I found a RECALL letter that I have from July 12, 2017 in which I took it to the dealer at that time I received it. I alo found 2 other recall letters ( see pics ataached). I guess at that time when they checked it nothing was wrong BUT now I am having an issue and I feel it could be related. The recall number is: 17V224 follow up letter of one of the recalls. The recalls prior to that does not have a # on it: it states: ENGINE CONNECTING ROD on of the recalls. I'm hearing some knocking but it just happened and I havent driven it since Nov. 26th. a.m.The code that comes up as P1362, knocking sensor and can be a number of other things. And everything I read says the KNOCK sensor detects vibrations indicating an onset of excessive connecting rod bearing wear. and can severly damage the engine. I'm very concerned and I feel that this recall back in 2017 is now happening to my car. I have uploaded the recall I have in my possession. According to William Garcia( Billy ) the service guy I always usually worked with at Gunther Kia, all of my recalls were checked and soem weere fixed. These particualr ones he said were done and or checked but nothing was repaired as you'll see in my history of service on recalls with them.

- Fort Lauderdale, FL, USA

My car loses power when I use the horn. It happens while parked with the engine on and in traffic. Initially, I thought it was faulty electrical problem because there were 3 active recalls needing to be fixed. I recently took my vehicle to a certified Kia service center to get the recalls taken care of and additonally, had the A/C compressor, struts, and a belt replaced. I also described the issue of engine power loss when I use the horn with service tech and attempted to demonstrate. However, my car didn't duplicate the issue. I'm not sure if the techs tested it thoroughly during the days it was being serviced. The final detailed bill states that the car wouldn't duplicate the issue. I'm currently satisfied with the fixed recalls, A/C, belt, and other minor repairs. I'm highly concerned and frustrated that I'm still experiencing engine, acceleration, RPM, and A/C failure whenever I need to use my horn. A couple of days ago while in traffic, I had to blow the horn because a distracted driver nearly side swiped me. As a result, my car loss power. I couldn't accelerate and the transmission wouldn't shift. I ended up doing around 30mph until I made it to a safe destination. I called for help, but after I turned the car off and back on, it was as if it never happened. I'm furious about it because the distracted driver proceeded to tailgate and intimidate me out of anger. Lastly, it was not professional or caring to be laughed at when I voiced this problem at the service center. I need help and answers before something more terrible happens. The number of engine and electrical complaints are startling. I'm hoping that my issue will be taken seriously and looked into. I'm not comfortable driving my car.

- Pine Bluff, AR, USA

The Kia Optima 2011 motor no longer works and smoke keeps coming out when it's on and turned off after driving from the exhaust on the drivers side. The accelerator pedal gets stuck and doesn't seem to want to make the change in transmission. I took the car to two different mechanics and both of them come out with the same diagnose. Was told that the car is a recalled car because it is to soon for the motor to be shutting down since it only has 81,000 miles and it's not an old car. The suspension is also not in properly.

- Los Angeles, CA, USA

Kia Optima 2011 took a turn for the worst on July 2 2018, my Kia Optima caused me to plummet into traffic after my brake didn't perform L. that's car had been taken to Kia for all service need and car still perform poorly. Have to restart my car multiple time just for it to act right. Car stops one me in the middle of the street one day. I have a 3 old and that day she could have been with me. I lost my license and my money I invested for a safe car for me and my child.

- Stockbridge, GA, USA

Driving on interstate, out of nowhere engine light started flashing and engine seized, car lost all momentum, had no "get up and go" pushing on the gas pedal did nothing, going up hill was almost impossible. Took car to local auto shop, they could hear some noise but weren't sure what. Per invoice 7/26/19: Checked codes: P0011 a camshaft position timing over advanced, P00114 B camshaft position timing over advanced; P1326 engine damage alert for driver. Engine was noisey and ran very rough, oil level was low and black (we saw nowhere that it was leaking oil, no spots anywhere). Changed oil and add lucas engine stabilizer, engine quieted and runs much smoother. Clear codes, test drive, watch scan data. No codes, possible early stages of engine damage if codes return inspect timing chain and control devices. Took car home over the weekend drove less than 50 miles, Sunday 7/28/19 again, engine light came on and car had no "get up and go" and a very loud clanking noise could be heard. Took car to shop asap. Per invoice 7/31/19: Check cel light and loss of power, check fluids, engine has internal noise/damage; computer datascan, check codes, diag, P1326; engine damage alert for driver, recommend further diag eval, inspect lower end and timing chain. Auto shop contacted local Kia dealership, was told they warrant engines with these conditions. They have a number of vehicles waiting to be repaired already, suggested calling a dealer out of town for repairs.

- Lebanon, PA, USA

Vehicle will not start. Engine and ignition replaced due to bearing wear recall. Transmission replaced 2 weeks ago for rebuilt one, and now car won't start. It's been 2 days and Kia has not been able to tell me what is wrong with it. The reason I wanted to submit this complaint is because I believe there should be a recall on transmissions installed in these vehicles. Kia wanted me to wait from 10 Sep to mid Dec because these transmissions are on back order. Which means there's so much demand that Dec is the earliest they could receive it. Their shop is full, mostly of these cars (Optima). They expected me to wait 3 months without a car in order to give them time. It just boggles my mind that they could do this. The craziest thing is that expect everyone to wait this long. I talked to 3 different costumers who are all having the same exact problem with the same cars, and they were told the same thing. I purchased this vehicle in 2014 used, only one previous owner, never had any accidents, now has 111,000+ miles. Always did all maintenance checks, oil & filter changes, tune ups, fluids change and yearly inspections. Only used for going to work and coming home 5 days a week (approx. 54 miles per day). I decided to repair transmission at other place & ended up saving $1100. Kia wanted to charge $2,700 for rebuild transmission & found a guy that charged me $1,600 for rebuild one. Kia never gave me quote copy. Just told me over the phone. How convenient! guy told me the way these transmissions were built it's simply bad engineering. And showed me the part of the transmission that broke. Would upload the documents, but I left in my car! can still provide them though! the safety issue was that the transmission went out while driving at 65 mph on a busy highway in houston! the car simply died on the middle of the highway. So I can only assume you know what that feels like!

- Montgomery, TX, USA

We were driving on a slightly curvy and hilly road where the speed limit was around 45 and the car lost all RPM and the oil pressure light and check engine light started flickering, there was a notable engine knocking heard during this time. We pulled over at that time.

- Champaign, IL, USA

The engine knocking and check engine light on and stability light for speed control. Took car several times to dealer and they finally told me about the engine need work done to it because they have done all they can do to solve the problem. I paid for them to replace oil control selenoid and the code poo11 still comes up. The car cuts off in traffic.

- Hephzibah, GA, USA

Vehicle was accelerating at 60 mph on the highway when the engine shut off, no power. The vehicle had enough momentum to drift across the slow lane to the shoulder. Car did restart. A child was in the vehicle and thankfully they were not rear-ended. This incident happened a second time while accelerating and prompted with clicking noises under the dash. The vehicle was brought to our local mechanic who stated that the engine failure at 120,400 miles.

- Buda, TX, USA

The contact owns a 2011 Kia Optima. While reversing the vehicle, it independently accelerated in reverse and crashed into a parked vehicle. The vehicle then accelerated forward and crashed into a house. The air bags failed to deploy. A police report was filed and there were no injuries. The vehicle was towed and was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.

- Fairburn, GA, USA

Travelling at approximately 30 mph (had just turned onto road)when engine seemed to accelerate on its own. Pressed brake pedal (hard) and did not slow car at all. Continued to press brake and also pumped but nothing slowed vehicle. Although saw truck well ahead of me stopped, I could do nothing to stop or even slow down. I wrecked into back of truck stopped ahead of me waiting to turn. Approx $8000 damage to my car mostly due to truck having a sizable trailer hitch on back that busted through a lot of front end plastic, cooling system, etc and buckled hood. No injuries but if would have happened at higher speed it would have been tragic. Officer upon arrival also noticed thatbrakes seemed to fail and noted it on his police report. I have since found internet sources indicating that some 2011 Kia had in fact has a tsnb issued for unintentional acceleration problems. I never received such a bulletin and have had numerous services performed at Kia dealership. Also, have had brakes checked multiple times at dealer and delaer inspection never indicated any problems. I hav ealso found documentation online that says if you have an unintentional accelleration, pressing the brake hard is the first step to do, but once you let off the brake, you totally lose brake pressure. Who possible would know that ? this accident is totally the result of a system failure of the vehicle and I am asking for assistance in persuing my damages as a result of this failure.

- Louisville, KY, USA

The contact owns a 2011 Kia Optima. While driving 10 mph and proceeding to stop, the brake pedal was depressed but the vehicle failed to stop. The vehicle began to surge forward without warning. The contact's vehicle rear ended another vehicle. A police report was filed. Injuries where sustained, but medical attention was not required. The vehicle was not diagnosed or repaired. Prior to the crash, the vehicle was diagnosed three other times and it was determined that nothing was wrong with the vehicle. The manufacturer was not notified of the failure. The failure mileage was approximately 25,000.

- Cherry Hill, NJ, USA

This is the second time I report this unintended acceleration, last month happened on May 4, I documented in my previous complaint, they returned the car 5-21-14 they didn't find anything, on June 6 again the car accelerated when I was stepped on the brake and ready to put it in park, they told me to take the car to another dealer until now don't hear from them, called Kia in California left messages no call back, today a got a hold with another person jenny, and she repeat like a broken record we cannot duplicate the problem but they still keep the car for a long time, I have a case # [xxx] the NHTSA should investigate this, like I explained to this lady engineers should look at this situation not the mechanic, is something to do with the computer, they just follow instructions and their machine tell them nothing is wrong, like I mentioned before in my other complaint this one is the fourth time that happened, what are we waiting that some people got kill to investigate, look at the problems that Toyota and general motor had, they wait until people died then start doing something, thank you to this site that we could voice our concerns. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6) updated 1/6/2015

- Harwood Hts, IL, USA

The contact owns 2011 Kia Optima. The contact stated that while at a stop with the brakes depressed, the engine rpms increased as the vehicle abnormally accelerated six feet. The contact was able to bring the vehicle to a stop by depressing the brake pedal with force. The sudden acceleration was experienced on two separate occasions. The dealer performed a diagnostic but was unable to generate a failure code. The manufacturer was made aware of the failure. The failure and current mileage was 18,100.

- Chery Hill , NJ, USA

On April 25th, 2013, I drove from the atlanta area to shannon, ga. Near adairsville, ga. I stopped a the gate put the car in park, set the brake. Before I could get out the car surged forward smashing the gate. I hit the brake, backed it up, put it in park, set the brake and again before I could get out it surged forward. This time when I backed up put it in park I turned off the motor. Jumping forward in my story, I called Kia and found out the car was on recall. I looked it up on the internet only to see the notices would not be sent out until May 2013. Kia. Is replacing the part but will not fix the front end damage. They told me to call my insurance company. Kia ran some test and said it showed nothing wrong with my car. I would have been run down and killed or in the hospital. All I ask is for them to fix the front end of my car and replace the gate. They still have my car so the mileage is and estimate. I did use cruse control. Case #[xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Riverdale, GA, USA

The contact owned a 2011 Kia Optima. The contact stated that while driving 65 mph, the vehicle began to decelerate abnormally. After a few moments, the vehicle suddenly surged forward. The contact maneuvered the vehicle to the shoulder and stopped. Black smoke then began to rise from under the hood and the vehicle was immediately engulfed into flames. The fire department appeared on the scene to extinguish the fire. The vehicle was destroyed and towed to a towing lot. The vehicle was not examined for the cause of failure. The manufacturer was made aware of the failure and offered no assistance. The failure and the current mileages were 7,000.

- Lowell, MA, USA