I had Model S for 5 years and just received Model Y. Overall, I'm very happy with Model Y and would take Y over S.
- Y has smaller foot print but similar amount of storage. This is a big plus to me because parking spaces are tiny in Los Angeles
- S has faster acceleration and the ride feels smoother. But, if you haven't drive/ride S, I doubt the difference is that dramatic
- Y charges at faster rate at Supercharger. But S has unlimited SC.
- Y has newer technology and one horizontal screen. I thought I will miss the duo screen in Model S, but I'm okay so far (granted, I haven't driven much due to COVID-19). And I do enjoy watching Netflix on landscape mode when SC.
- S has quieter ride and cabin.
- S has better build quality and uses better interior material
- S is a sedan and Y is a cross-over / SUV. The ride height and view are different (and I prefer better view). Try to test drive a Model X and Model S and you will know what I'm talking about.
- I love how S can stack 2 views on the center screen. And I still prefer to have rear camera view to be on all the time. You can turn on rear camera view, but it will block the map/navigation/music control...etc.