Originally Posted by red-sauerkraut
It's a up-sell, nothing more than marketing.
BMW will offer the new 2er Coupe/Convertible & 4er Coupe/Convertible.
Size increases from the 1er & 3er they respectively replace.
I believe it is marketing, however, not in the sense that a stripper 3er will be below a stripper 4er. I think the change is directed at people who don't understand the chassis nomenclature. E90, E91, E92, E93, get divided into a simpler to grasp 3 and 4. The names were beginning to get ridiculously long too.