schmoell:

to get an idea about the state of things you may want to have a look at Engadget.  The race is certainly on ...

https://www.engadget.com/2019/02/22/tesla-performance-audi-jaguar-EV-efficiency-testing/

Nothing new in that article.  It is an established fact that the Tesla requires less kWh per kilometer than either the Audi or the Jaguar; however, the relevance, beyond eking out a few more kilometers of range is virtually meaningless for most owners.  Once again, each automaker optimized the design based on slightly different parameters.  

It has become tedious when the efficiency argument are on par with comparing a Mercedes E450 with a BMW 540i xdrive and stating that there is a difference in fuel economy.  The difference is trivial.