I agree with most here that it's going to be a challenge to reach 50k deliveries for the year. However, I think I have a different line of reasoning. I don't think it's production that's the big bottle neck. If Tesla wanted to deliver 16-17k Model S's in Q4, I think they can. I don't there are major production limitations. They can always work on Saturdays (although it'll cost more with overtime) and really push their workers with a super short Thanksgiving break (and not take any other breaks the whole quarter). But the question really is does Tesla WANT to deliver 16-17k Model S's in Q4? And this is where I differ from most people. I think Tesla, for some reason, appears to be hesitant to push production because I think we're hitting the limits of current Model S demand. Do I think Tesla has enough orders to deliver 16-17k Model S's in Q4? Yes, I do. I think there is the demand for that. But the bigger question, that Tesla might be thinking, is is that demand sustainable. 16k cars/quarter is 64k Model Ss annually, and that's probably more than current demand. Thus, Tesla might be thinking it's unwise to push production that high in Q4 just to meet their annual guidance. However, on the other hand they might think it's worth it to push production that high to meet annual guidance since the following quarters they'll have Model X deliveries so they could orchestrate where Q1 2016 doesn't show a drop in total deliveries. I think the biggest clue, however, was the deliveries in Q3. It was lower than I had expected. And I was hoping they would deliver a lot more, ie., 12.5-13k cars, to show they were really serious about meeting year-end guidance. But I think delivering 11,580 vehicles probably signals that they're not fully committed to 50k delivery guidance. But I say "probably" because there's always the possibility that they are. It's possible that they produced a lot more cars than 11,580 last quarter and it's possible that they have enough demand where they feel comfortable to push production/deliveries higher for Q4. Again, I don't see an issue with them be able to produce and deliver the # cars necessary to meet full-year guidance. I just am not convinced that Tesla sees it as a "wise" choice to do so.
Q1 - 10,045 vehicles delivered (11,160 produced)
Q2 - 11,532 vehicles delivered (12,807 produced)
Q3 - 11,580 vehicles delivered (production # unknown, guidance for "just over 12,000 vehicles produced")
Tesla needs to deliver 16,843 cars to meet 50k full year guidance.