OK, but we were comparing Tesla's (Model S) prices to the Germans. So let's compare it to the 7 series, not to the entry models.
Model S US base price: $71.5k
7 series US base price: $81.3k
Even the 6 series is more expensive: $77.3k
Model S EU (Germany) base price: €82.7k ($92,8k)
7 series EU (Germany) base price: €82.6k ($92.7k)
6 series EU (Germany) base price: €79.7k ($89.4k)
(The EU prices are meant with 19% German VAT, which is about the EU average.)
And it gets more interesting, if you choose some extras.
Maxed-out Model S: €166.6k ($187.0k)
"Maxed-out" 7 series: €160.2k ($179.8k)
For the Model S I chose all available extras. For the BMW I chose the 750i xDrive M-Sport with Interior Design Pure Excellence package as base model, then I picked all available extras. With the Individual package it can be way more expensive, but it's a very special package. It's price cannot be determined, since it offers features like custom needlework on various parts of the interior. Only a dealerships could give you exact price on a concrete idea and configuration. Anyway... this configuration has dozens of features that're not even available for the Model S. If you pick a 7 series with a similar options (apart from the insane acceleration) like a maxed-out Model S, it would be "only" €110-120k in the EU.
Now add the loyalty to the Model S in the USA, and to the German (and basically all European) brands in the EU, and you can realize why all brands perform much better on their homeland than their competitors.
I let you convince me, if you give some exact data that proves your statement.
But to save time, I do it instead of you.
According to
Wikipedia, the Tesla's global sales are the following:
Q1/2015 : 10,045 (without Model X)
Q1/2016 : 12,420 (with Model X)
2375 cars (23.6%) growth with a new model.
Mercedes' global sales (data comes from the post that I've already linked earlier):
Q1/2015 : 429,384
Q1/2016 : 483,487
54103 cars (12.6%) growth.
Or BMW's global sales:
Q1/2015 : 451,644
Q1/2016 : 478,743
27099 cars (6%) growth.
And so on... If you compare the percentage values, it seems the Tesla grow faster but this not the truth. Just have a look at the quantities. Obviously the is gap is increasing between them. While Tesla adds X number of cars to its sales, the others add 10-20 times more.
And again: I'm not trolling here, just trying to be realist. I know this is the future, and I'm waiting for it, but this is not gonna happen in a few years as the super-optimists think. Anyway,
here's what I think about the current situation of the entire EV market (not just Tesla).