My 2019 KIA optima with 116,021 odometer on mileage. Stop in the middle of High Volume Traffic, Because of Software Issues, I suspect. All Forward Collision Warning Detection, Also Rear Collision Warning Alerted on dashboard!!! Which Causes my Car to stop in the middle of Traffic Completely shut down. I was able to get my vehicle towed to KIA West Dealership Located in lithia Springs GA. I requested a diagnostic test and was informed by my service advisor and service manager that my vehicle has a burned out wire located in the left right rear sensors radar assembly, bumper area. Which will eventually have caused a fire or actually already did, I asked how did it happen? I was told it just simply burnt out. !!!! I was told the assembly box junction box needed to be replaced, which I agreed at that moment in order to diagnose the vehicle. Second the electrical problem was revealed, which is the big problem now currently for 1, the vehicle is not safe for a midsize sedan on public roads and highways the if this make and model car causes random fires. secondly the parts very expensive and suspicious. I-??m currently still doing my investigation. Unfortunately I had to agree for the sensors to be replaced and fixed because personal reasons I need my vehicle to get back-and-forth to work, etc.. I-??ve been in contact consumer regional services, No one is able to find a recall with my Vin number the car never been in a accident ever. I have a picture of the hazardous burned out wire the technician showed me as well. As they claimed randomly caught fire.

- Austell, GA, USA

Dear National Highway Traffic Safety Administration, I am writing to file a formal complaint regarding numerous premature defects in my 2019 Kia Optima, which have led to serious safety hazards and compromised driving conditions. Firstly, the premature valve cover gasket leaking has resulted in dangerous fumes infiltrating the cabin, posing a significant risk to my health and safety as well as that of any passengers. This issue has not only caused discomfort but also raised concerns about potential long-term health effects. Additionally, the premature turbo gasket leaking is a further cause for alarm. Not only does this compromise the vehicle's performance and efficiency, but it also presents a potential fire hazard, particularly if the leaking oil comes into contact with hot engine components. Furthermore, the premature defect of the axle shafts and axle boots is a critical safety issue. This compromises the vehicle's stability and handling, increasing the risk of accidents and potential loss of control while driving. Moreover, the premature engine knocking and abnormal shaking and lag are indicative of underlying mechanical issues that significantly impact the vehicle's drivability and safety. Engine knocking can be a precursor to more severe internal damage, while abnormal shaking and lag compromise the vehicle's responsiveness, especially in critical situations such as merging onto highways or overtaking. These issues collectively present a clear pattern of premature defects that pose significant safety risks to both myself and other road users. As such, I urge you to investigate these matters thoroughly and take appropriate action to ensure the safety and well-being of Kia Optima owners. I look forward to your prompt attention to this matter and a swift resolution to address these critical safety concerns.

- Frostburg, MD, USA

System failed to pick up speed.

- Miami Gardens, FL, USA

I was driving on the highway and my car started smoking. I got off at the next exit and black smoke started billowing out from under the hood. As soon as I opened the car door flames started coming out from under the hood. Entire engine was on fire

- Akron, OH, USA

This car was equipped with the theta ll engine and I believe that-??s what caused it because it was an electrical smoldering. The car has been signed over to the insurance company, it was totaled. If this had happened 30 minutes sooner, I would have been burned. Me and my daughter had luckily just got out of the car. No the problem has not been confirmed by a dealer. It has not been inspected by the manufacturer, but has been inspected by police and insurance. There was not any warning lamps or messages prior to the incident.

- Stockton , MD, USA

I have had my AC have 4 problems now and continue to have different problems since I bought the car a little over 6 mo ago. KIA is a pain and I'm constantly taking my vehicle in. The first time it wasn't major, the second time it was something electrical with the AC that tore apart my whole dashboard. Now I have a mold and mildew smell in my car and water leaking excessively under my car. My daughter who is 5 yrs old hasn't had ac for multiple weeks and now we are inhaling mold and mildew. I changed the cabin filter that was in the car and it had water stains all over it. This is a safety concern for the health of me and my child and I want things made right. My lawyer has been contacted and will proceed if nothing is done.

- North Port, FL, USA

Brakes don't feel right some times when I stop. My passage side seat belt dangs for no reason even when there nothing on my set. And ever once in a blue moon I can hear a dang dang noise idk where it's coming from but it's very soft sound.

- Dallas , GA, USA

I've had this car going on three years sometimes not all the time I will go to start it and it will barely start so I took it to the dealership three times when I got my oil change and they checked the battery but they're saying the battery is good and the starting system the car will just be sitting in my garage and I try to start it it just sounds like it's barely starting and then the next time I started it's fine

- Brownsburg, IN, USA

The cars usb port always disconnects from the cell phone cord. It cuts off my sirisxm and maps. I have to re-plug in the cell cord to have the things come back on. This happens while the car is moving both on city and highway. When I was at a Kia dealership there was someone else that had the same problem. The cell phone store said they receive complaints about from their other customers. Not sure when it started. It seems like since I bought it. There are over 120,000 miles on my car. Over the smallest bump this can happen. If I put my cell on my car window holder it happens less frequently. I have bought new cords and a new cell and it still happens.

- Birmingham, MI, USA

Parked. Started car & all dash lights lit up. Tried restarting no change. When backing up there was no power steering. Turned off ignition, pumped gas pedal 3 times, restarted & it seemed to fix problem. Took car in for electrical recall 1 week later & was told this might fix the problem. 2 weeks later it occurred again. Same solution used with success.

- Kaufman, TX, USA

When my phone is plugged into the charger, my screen will go black all of a sudden, and I have to turn the car off and unplug my phone and turn the car back on for the screen to come back on. Also, there have been several occasions where my brakes lock up on me, and I almost hit the person in front of me. Especially in the rain, and I have even had to swerve off the road to avoid a collision. It happens when I am in motion driving and go to stop. The radio screen though has turned off on me whether I am driving or in park.

- Sacramento, CA, USA

I bought my 2019 Optima brand new back in November. It is now June and I have had it back to the dealership 3 times for randomly not starting on me. I get the same answer every time. They don't know what it is, nothing comes up on the computer when they plug it in. They say, "if it happens again, call us and well take it in". buying this car brand new and my payments being that of a range rover, I am extremely upset. To top it off, the back windshield is slipping down. I am over this car and I will never buy another Kia again. But, my fight is not over, something will have to be done. It also hesitates at times, feels as though it is struggling to go. Also, two times while I was driving the car, the dash lit up with almost everything like, I was in a crash, the exclamation point, etc.

- Villas, NJ, USA