I guesstimate Model S sales were above 20k:
14.3k North America - 40% of Troy's 35.8k S/X estimate
5.3k Europe - TMC
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0.3k China - Model X completely dominates their 7k+ S/X sales
1.4k ROW - half of Troy's 2.8k S/X estimate, assume same 50/50 split as Europe
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21.3k
The widest error band is for North America, I used a 60/40 split based on
CA New Car Dealers data. Using the same approach I estimate Taycan beat Model S in the second half of 2020, but not by enough to erase its first half deficit.