Navigational (global Positioning System) Gps problems of the 2024 Hyundai Sonata

I along with other people on various websites have noted that the 2024 n-line has something wrong with the speedometer. I first noticed is on the waze that is was different. It must have something to do with the internal gps of the car. I tested it alongside another car and it is indeed off. It happens after driving the car into a place that isn't obvious on the map. I brought the car to the dealership and they weren't able to help. I know there is a slight allowance for speedometer being off, but this is way off. For example, it can show one is going 25, while really going 20. This causes me to have to look at waze to get proper speed. This is a real issue and if search Hyundai sonate n-line speedometer being off, you can find other people talking about this issue. Please really look into this as this is a major concern that falls outside the allowed difference in speedomter and actual speed.