Dear National Highway Transportation Safety Administration, I am writing to bring to your attention a grave safety concern regarding my 2019 Kia Optima SX. Despite diligent maintenance and care, my vehicle has experienced persistent alignment issues, particularly on the right side. Additionally, I have encountered premature axle shaft and axle boot failures, all of which have occurred well before reaching 60,000 miles. These issues have not only posed a significant financial burden but have also jeopardized the safety of myself and other road users. The repeated alignment problems have resulted in the rapid deterioration of tires, leading to baldness within a month of replacement, creating a hazardous driving condition and increasing the risk of accidents. The premature failure of axle shafts and boots is unacceptable for a vehicle of this age and mileage. Such failures not only compromise the vehicle-??s performance but also raise serious concerns about the overall quality and safety standards of the Kia Optima SX. I urge the National Highway Transportation Safety Administration to conduct a thorough investigation into these recurring issues affecting the 2019 Kia Optima SX model. Immediate action is necessary to ensure the safety of consumers and to hold Kia accountable for any design or manufacturing defects contributing to these alarming problems. Your swift attention to this matter is crucial in preventing potential accidents and ensuring the well-being of motorists nationwide.

- Frostburg, MD, 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

I just think theres some sort of a tech issue with my electronic dashboard. My passenger seatbelt sign goes on and beeps incessantly when there is no passenger in the seat. My caution alert button comes on saying I have low tire pressure when it-??s only one number less than all the other tires. My oil change reminder never comes on. Today I was driving normally and the car in front of me barely tapped their breaks (and I was not close to them at all) and the collision alert started beeping. My car randomly gets cold and the AC smells like it-??s on, but it-??s not (the button isn't lit nor did I turn it on) It normally doesn-??t allow me to turn the outside air button on/off. Like in the winter when it-??s freezing outside and I wasn-??t to press the button to only circulate the inside air in the car, it doesn-??t allow me and I have to freeze and be uncomfortable in my own car.

- Manalapan, NJ, USA