Power seats and mirrors with multiple memory is still a luxury car feature and not mainstream like power windows.
The OP did not say what kind of cars they have. It is possible to have 2 cars with memory seats and mirrors. Now if only we could get memory rear view mirrors on the same cars as memory seats. Oh and seatbelt height adjustment memory.
I wouldn’t call it a luxury car feature. In the US basically every car >30k has that. And most new cars cost >30k at this point. Basically every trim over base that’s like the first thing they add.
I had a Ford Focus rental car with power seats once.
When I bought a $50k US car in 2017, only the top trim had memory seats, and they penny pinched it off the top trim hybrid model so I couldn’t get them at any price.
Some OEMs do stuff weird. Hyundai and Kia are some of the worst. Some common features are on the trim just above base, the rest are all in the top trim.
When I bought my Outback in 2018 every trim besides base had it. But that Focus for example was a top trim and apparently only top trim has that. Granted that’s an smaller economy car, vs the Outback.