Looks like an enlarged C Coupe with an E Interior. Not sure I like the new interior...a bit too much "bling"
We had the previous E Coupe, a 2011 350 CDI AMG edition. Great car which we were going to replace with the new E, but realised it would be even bigger.
The new C Coupe is, within 1", the same size as the old E Coupe: big enough for us as 90% of the time it is driven 2 up.
Also the C Coupe has a more traditional dash, which I prefer.