-Traction control is really good, "like really good" -Elon. With my previous ICE cars, I knew certain spots where my tires would spin out and my car would slip a bit. At times it was embarrassing to turn a corner and have my tries spin out as I stomp on the gas pedal. With the Model 3, I can feel when traction control kicks in. The car just keeps on going with little to no tire slips. The result is a safer car, and a much more fun driving experience because when you stomp on the accelerator pedal you just go. I have respect for German engineering, but can we get a hooah for 'murica engineering.
-Was surprised to see all 5 stars all category & sub-category crash rating from NHTSA. When I bought the car, Model 3 wasn't rated, so there was always a question mark on just how safe it is. FUDsters were spreading the rumor that the all glass roof was unsafe. I'm very happy to learn that the Model 3 is the safest car on the road.
-Was pleasantly surprised by how good the trunk's space usage is. I wasn't expecting that large space under the cargo cover, I love it. Also that deep compartment to the left of the trunk, genius design. That space is perfect for your interior/exterior car cleaning wash kits because you don't want to lay your spray bottles containing liquid sideways or they could leak. That's where I have my waterless wash bottle and microfiber towels, neatly stacked to the side, no leaks to worry about, and don't take up any usable space in the trunk or car. You never want to leave bird droppings to dry because they will etch your paint. Having cleaning kits with you at all time allows you to spot clean as needed.
-Phone key, the best thing since sliced bread. Yes I know some people don't like it, and I know it doesn't work well with android phones. But my gosh, being able to just walk up to your car, open either the door or trunk without pressing any buttons at all is just FREAKING FANTASTIC. And leaving the car, no fiddling around with keys, I just open & close the door, and walk away. Or getting my groceries out of the trunk, close it, and walk away with my hands full. I used to carry keys, the keyfob was of course the bulkiest one. Getting rid of that allowed me to now just be down to 1 house key. I now keep the house key in my wallet, so there goes any sort of key chain at all. I can't describe how much happier I am reducing bulk in my pocket and not having to fiddle with keys anymore.
-Unexpected peace of mind. I used to worry about my car, because where I lived, people have set off my car alarm multiple times before. Also I found car alarms to be generally inadequate. For one, they all sound the same. And nobody really cares if a car's alarm is set off. Plus if you're away from the car, such as at a dinner, you can't hear the alarm go off anyway. With the Model 3, you get an alert on your phone when the alarm is set off. You get to track your car's positions. And it just so happens to be one of the hardest cars to steal. I was a bit overprotective of my Model 3 initially. But this peace of mind quickly got me to feel a lot more comfortable.