While Tesla is ramping up production and deliveries of Model 3, combined sales of its two other cars - Model S and Model X - are decreasing.
According to the AIDNewsletter via a Matthias Schmidt tweet (see below), Tesla delivered 6,158 Model S and Model X in Western Europe during the first quarter of 2018. That's 5.2% less than the 6,397 it delivered in Q1 2017. We should note though that there were some troubles with deliveries in Norway.
Deliveries of the S and X decreased in the U.S. by 5.8% too, if our estimations are correct.
The previous three quarters were stagnant for the S and X in the U.S.:
Tesla Model S/X Deliveries (quarterly) in U.S. – through March 2018
Globally, Model S and Model X deliveries decreased nearly 13% to around 21,800 in the first quarter and that's the first time we've seen a decrease year-over-year.
Tesla Model S/X Deliveries (quarterly) – through March 2018