I own a 2017 Model S 75 and just took delivery of my 2018 Model 3 Long Range, the first delivery of a M3 at the Jacksonville Fl SC. After a few days I may be in the minority here but I like the Model 3 much more than my S. I know some people are thinking keep waiting for get a used S or whatever and I watched all the youtube videos I could find before I finally got my car. Hopefully this will help someone with their decision.
S VS 3
The frunk is much smaller in the 3 but the trunk is basically the same size.
I actually like the handles better in the 3. Once you get the two finger approach down it works much faster as your don't have to wait for the handles to come out. It sounds silly, but my fob often only got detected right against the door so I often had to wait for the handles.
The glass roof is so dark in the S I often forget its actually glass, the model 3 uses a different tint so it is much lighter and almost looks a tad greenish from inside the car.
The phone app works really well. Hopefully Model S will add that as an option at some point
The seats are way sportier and more grippy in the Model S, I don't really like the Model 3 seats that much
The air blade system is honestly incredible. I would be shocked if they don't add that the the next S/X refresh. It is so intuitive, and blows a much greater volume of air than the model s while being a lot quieter. This is one of the best parts of the car.
By far the biggest difference is the screen, although smaller and only one the Model 3 display is MUCH sharper, faster, brighter, and clearer. The pinch to zoom on the maps and sliding the cards on the driver side is leaps and bounds better than the Model S display.
The Model 3 feels much tighter and better built. This is obviously a personal thing just like all my comments here but the best way I can describe is its close to a Porsche or BMW (I've owned multiple of both). The panels, and interior trim pieces are much tigher and feel more solid than my S. HUGE improvement.
Because of the changes in the batteries, the Model 3 charges faster. While not actually faster, because the car is more efficient it gets more range per hour. For example at home using the UMC I get 29 mph on my S and 37 on my 3. Using the charge point at school its 18 vs 24 (level 2)
Steering wheel is smaller and thicker rimmed so gives the car a sportier feel.
Charge port door sucks on the Model 3 and I don't like the tiny light, the larger LED surrounding the Model S charger is nicer and easier to see. I'm guessing that was a cost thing.
Anyways, just some observations after a few days with both!