Originally Posted by JasonCSU
The Mercedes E Coupe is technically an E Class coupe. There is also a smaller C Coupe based on the C Class. Above the E Coupe, there is the bigger CLS which I suppose is technically the coupe version of the S Class. As far as match ups, it would be something like this:
BMW 3 series --> Mercedes C Class sedan.
BMW 4 series --> Mercedes C Class coupe
BMW 5 series --> Mercedes E Class sedan.
BMW 6 series --> Mercedes E Class coupe and possibly CLS
BMW 7 series --> Mercedes S Class
2 series --> C Class Coupe --> Audi ??
4 series --> E Class Coupe --> Audi A5
6 series --> CLS --> Jaguar XK --> Audi A7