For the first production runs - a fully loaded Model 3 with the 310 mile battery pack compares closest to a fully loaded Model S 100D (what we had delivered 4 months ago). The Model 3 costs $59.5K while the Model S 100D costs are $115K. Still a 2X price difference - and what we will have in our garage when we get my wife's Model 3 in a few months.
As my wife was looking for any details on the Model 3 over the weekend, in anticipation of being able to place her order, not once did we discuss any disappointment in spending $115K for our S 100D - and her being able to order a similar range Model 3 with most of the same "luxury" features. At least for us, we still view them as different cars - for different purposes.
We'll continue to use the S as our road trip car - because we use the additional storage space on our trips. We plan to use the 3 as my wife's "commuter" car - primarily driving in rush hour to/from her office. Though with the longer range, if there are cases when she needs to take a road trip herself - she'll use the 3.
We're likely going to see Tesla increase emphasis on the benefits of the Model S vs. the Model 3. FUSC (Free Unlimited Supercharging) might go back to being a permanent feature of the Model S, or possibly a higher amount of included free charging compared to the Model 3.
Battery pack upgrades are another obvious area for Tesla to address. With the first production Model S cars now 5 years old, it may be time for Tesla to introduce a battery replacement/upgrade program. And, assuming Tesla can refurbish used battery packs to close to the original capacity, at a fraction of the cost of a new battery pack, they may be able to provide attractive pricing for battery upgrades - extending the range for those who purchased 40's, 60's, 75's, 85's or 90's.
It's true that for many owners of S & X today, those cars are the most expensive cars they've ever purchased. And for those Tesla customers, if the Model 3 had been available, they could have spent less and purchased the smaller Model 3 instead of their S or X. So S sales will likely take a hit in the short term - as will X when the Y comes out.
But we should also expect Tesla to increase differentiation between the S & 3 product lines - and provide a higher end flagship model, for those willing to spend more. My biggest concern is whether or not they'll do something to protect the value of the Model S cars we already own, or this will only apply to new vehicles.
They've already retroactively added FUSC to all Model S cars delivered after January - so they've set a precedent for applying new benefits to existing cars - and they could do something like that for the battery replacement/upgrade plan, offer something as a benefit for Model S & X customers.
Will be interesting to see how Tesla handles this in the next year, as Model 3 production ramps up...