We have a 2021 Kia Seltos with the 2.0L and the IVT transmission. We have less than 1000 miles on our car and think we are having transmission issues. When the car is on cruise control the RPM gauge fluctuates as if trying to find the top “gear”. Going about 75 miles an hour the RPM gauge fluctuates between 2500 RPM and 4300 RPM continually when faced with any sort of inclined no matter how small. When the cruise control is not on, this fluctuation of the RPM gauge does not happen.