NHTSA Complaint #11690792 — 2025 KIA NIRO

I am reporting a serious safety concern regarding the 2025 Kia Niro Hybrid and its adaptive cruise control system. When the cruise control is activated and set to maintain a certain speed, the vehicle continues at that speed regardless of whether there are other vehicles in front of it. In multiple instances, the car approached slower-moving vehicles at 45 mph without reducing speed or giving any warnings. There was no automatic braking or even a prompt to alert the driver of the imminent danger. This is extremely dangerous and could easily result in a rear-end collision if the driver is not fully alert. It is especially surprising because the same vehicle features intelligent climate control functions—such as adjusting fan speed during phone calls and preventing windshield washer fluid odors from entering the cabin while the A/C is running. Given the level of attention to such minor details, the lack of basic forward collision mitigation behavior is unacceptable. The issue was reported to a Kia service center, but no clear explanation or resolution was provided. I believe this may be a software bug or a design oversight that has not been properly acknowledged. Recommendation to other drivers: always keep your eyes on the road and be ready to intervene, even if the adaptive cruise system is engaged. The risk of collision is high if you rely on the system to slow down for vehicles ahead. This needs to be investigated immediately before it leads to serious accidents. I urge the NHTSA to review this issue and, if necessary, request a recall or software update from the manufacturer.