Same model type 1.5 2.0 2.5.....An early 1.5 will receive the same updates as a late 1.5 (same with 2.0 & 2.5's)......For the 2.5's some of the updates that Tesla has done is an HD radio booster update, Lumbar supports, PEM fans, shroud, and some other ones I cannot remember but were on my invoice. I am sure there have been at least 15 non essential updates that Tesla has performed on eariler roadsters to make them the same spec as laster roadsters.
Let's separate the apples from the oranges.
1) Tesla has been very good about proactively upgrading firmware and and doing things like re-locating the satellite radio and GPS antenna locations so that they work much better. Kudos to Tesla for their fine work. The Rangers did a lot of work each time they were on site because they came from 5-hours away -- not just down the coast.
2) If there are features that would make the car "nicer" like different seats or more advanced electronics package offerings, no big deal. I realize that different model years get different offerings and that progress marches on. I am a certified early adopter.
3) What I am talking about are things that were not revealed at the time of purchase and could only be taken on faith that they would be satisfactory -- look at my TMC registration date. Had any Tesla product even been test-driven by potential customers then? We were only able to drive Elon's personal car with the then two-speed transmission locked in 2nd gear around Palo Alto (not Ohio) in mid-2008. Unsatisfactorily odd ABS behavior on low-coefficient winter roads and a "pretend" AC system that only works when it is least needed are really frustrating and were not featured on the sales literature or able to be experienced in a California test drive. Since there is apparently never going to be a resolution of these more major issues, they are worth noting.
What's so hard to "get" about the differences among 1, 2, or 3?
Again, #1 = Good work by Tesla, #2 = no big deal, that's life, #3 = so frustrating that I wish I had waited for the resolution in subsequent versions of the Roadster. That is the topic of this thread, isn't it? Does "more complete" in the thread title mean with more goodies or does it mean with properly functioning basics?
Oh, speaking of not mentioned until after delivery, will the Model S be restricted to hand washing? After we took delivery of our Roadster 1.5, we were cautioned not to take it through an automated car wash. There were no problems with leaks, they said, but there could be problems with the electrics. We adjusted to the news, but it would have been nicer to have exceptions to every-day vehicle usage revealed ahead of time. Hand washing a car in Ohio winters is not that practical unless done indoors.
Hopefully Tesla learned from the Roadster what could be improved in their product planning and execution. I expect the Model S to be a better car.
However, I don't expect Tesla to do much beyond firmware updates or a few very simple bolt-ons for early adopters of the Model S.