We wouldn't have bought the 2020 2.0, had it contained a turbo. When we saw all the many cosmetic changes to the exterior - then saw the change from TGDI to MPI, that sold my wife on her new ride.
I belong to a couple different Kia forums. You should consider a trade-in or sell, on that 2017 2.0TDGI with 75k. I'm going to keep a close eye on threads and replies concerning our 2020. As of today, there's a little finger-pointing to the quality of the new transmission in our 2020.
I have never bailed-out on a new vehicle purchase since 1980. Kept all of them from birth to rust 18 years later. But these two Korean models I have will be on a short leash. If the trending goes south on either one, I'll permanently remove it from our driveway.