While driving on the freeway I suddenly lost control of the vehicle, with the vehicle swerving left and back across several lanes. Thankfully, I avoided a catastrophic accident and managed to pull over safely. There were no warning lamps or messages of any kind prior to the failure. Upon inspection of the driver-??s side rear wheel, I discovered that multiple lug nuts had snapped off, with the studs still attached to the lug nuts. The remaining lug nuts were extremely loose. I have never heard of such a dangerous defect in a brand-new vehicle, and it appears as if the wheel may not have been tightened properly before I took possession or they loosened since then (possibly due to having had just driven through freezing temperatures). I had only had the brand new car for 5 weeks and added 400 miles to the odometer (total mileage 544). Inspection report was provided by the nearest Kia dealership -??Found 2 lugs snapped off taking the stud with it, and the rest of the lugs were loose. Damaged rotor screws, lug studs, and the wheel. Recommend replacing the hub assembly, lug nuts, wheel, and recheck vehicle operation.-?? Kiais claiming this is not covered by Warranty and is so far refusing to make repairs.

- Sacramento, CA, USA