First observations, maybe I don't know how yet because I haven’t read the manual, but these are the things that I noticed compared to our early 2014 S, keep in mind my S is an older S with no autopilot, so I added which I liked better in which car. - 100% charge only charged to 306, 90% was 276 (Shouldn't this be 310? for new car, my S85 was 365 @ 100%) - seats are more comfortable/software/cushier then my S seats, which have always been pretty hard. - 3 - "stiffer" ride then the S - MS - my left side windows auto up and down do not work. - issue - the non-leather headliner in the Model 3 is nicer then my non-premium S headliner - 3 - rate of charge is faster then the S by about 9-10 mph with a 40A because of the efficiency - 3 - much more efficient then the S85 in terms amount of useable miles from the LR vs the S85 - 3 - autopilot pretty much worked right away - 3 - the frunk is tiny, but I only use the S frunk on long trips with lots of stuff to carry. - MS - I like the auto-present door handles of the S, but the 3's design works out well also, and hopefully less issues. - Tie - keyfob vs phone vs card - so far I like the fob better, may just be something I have to get used to. Don't know if I should always carry the keycard with me or not, seems like it, but then I don't leave the keycard by the door to take when I leave. The keycard is darn thin. - MS - have had issues with the phone unlocking the car twice out of 30+ times? did forget house keys because I didn't pick up keys when I left. - back seats seem to sit really low, so your legs are sort of a weird position to me if you have longer legs - MS - no where near the space of the S in the back - MS - my S had no center console, but I do like the 3's - 3 - The trunk in the 3 is hard to close, love the electric close of the S - MS - 3 doors do seem harder to close so far - MS - FM Radio - it's weird in the 3 and didn't work for a while, still figuring it out, because it has to "search" for stations first vs you just tune what you want. No AM, yes I do listen to AM for sports - MS - Premium sound system in the 3 is way better than the STANDARD sound system in my MS - 3 - The right scroll wheel on the 3 doesn't seem do anything while driving vs in the MS it can be used to make a phone call. Have to check the manual on that - MS - Controls for the mirror/steering wheel are all done with the two wheels, that was pretty cool - 3 - MS trunk can hold 4 sets of golf bags, not sure the 3 can fit more than 2. - MS - 3 car doesn't appear to sleep yet - doesn't matter if it doesn't drain like the MS - No calendar integration with the phone – MS - Seems like More road noise from the 3 could be new tires - MS - Rear view camera is not even close the S especially looking out in the distance (I believe I have the latest update) - MS - Navigation – new view in the 3 navigation for turn by turn, but I miss the little turn by turn direction in the main dashboard of the S - Both - Touchscreen is snappier - 3 - LTE vs 3G as I never upgraded the S - 3 - Need to get used to just having darkness behind the steering wheel - Climate controls show if it’s doing cooling or heating by being blue or red in the vent view - 3 - Climate control on the S has individual auto for AC/FAN/and directional – 3 seems to only have 1 Auto on or off for everything, I like everything auto with AC off - MS - Mirrors feel small on the 3 – MS - random weird clunking noises when the car is parked and locked in the garage - passenger seatbelt buckle knocks into the B pillar on bumpy roads - Had moisture in the tail lights on a warm day, even though the car wasn't wet or rained on.