I drive a BMW. It is my favorite car.  BMW is the 12th largest producer of vehicles. 
That's awesome!  I also drive one!  I have a 535i GT.  When was the company established?
BMW was established in 1916 and it is located in Munich. 
I didn't realize it was that old!  I didn't even know cars were that old!  What is there best selling vehicle?
I don't know. But they have made over 2.2 million vehicles in 2015.  
Wow!  That is a really high number!  Are they the best selling luxury brand?
Good question since the term luxury is ephemeral. What one would consider luxury someone else would say is ordinary. 
Ok, you got me there!  I guess I meant BMW versus companies like Porsche, Mercedes, Land Rover, Jag, etc.