Current total U.S. sales are just over 1300, and Canada is 210. I think it's highly unlikely U.S. (and maybe combined with Canada) sales will top 2000 before the end of production. So, is the rest of the world outside North America buying 3x as many? Also, I'm pretty sure the original 3500 number was estimated production capacity, not sales. In theory, they could predict how many they could produce, although the line got held up for a week while they looked for that pencil, but I don't think even FCA thought they could predict sales.
One would think that estimated production would roughly equal estimated sales. Well, actual causality would dictate it's in the opposite order, but still equal.
In the auto industry (to the public) one rarely says "if we go all out, we can make X of this model". Typically, it's "we plan to sell (= make) Y of them".
Especially since they had tons of demand in the first year+, yet didn't actually ever get anywhere near 3,500. Basically, the entire 4C project was mis-managed from the time it went to production.
And the person responsible for mis-managing it is no longer CEO of Alfa Romeo and Maserati. I'm guessing there's a correlation. My guess is that he was asked to fall on his pencil.
As for the numbers, click the Sales World tab on the spreadsheet at this link:
4C Owners' List
Edit: don't forget, they are (or at least were) limited to selling 1,000 a year of these in Europe. I think it's related to not meeting all the safety standards. So basically, the EU was willing to have up to 1,000 of its citizens get killed annually in order to support the Italian Auto Industry!
Upping the strength of the Euro coupe's tub (which has recently been mentioned in multiple threads) may remove that limit. Perhaps???