Yeah I suppose I didn't win any points for presentation. It would seem though that the term "four door coupe" is in fact catching on and might become a class in it's own right.

It's 33 cuft rear-interior space. I think the CLS is a little over that, although I couldn't find any solid numbers for the rear. It has 104cuft total interior space, fwiw. Apparently the RX-8 fits the SAE definition of sedan, from what I have read.

None of this has much to do with the 5th Gen except that technically the 3rd and 4th gens weren't coupes, and so that would make the 5th retro in that regard

 

My grandfather just got one of the "four door coupes", (his is a special edition only 60 were brought to North America, 18" Wheels, Slotted and drilled rotors, hand sewn leather seats, and a bunch of other stuff) and to be honest it does kinda sit more like a coupe than a sedan, its low and sleek and the roofline is more like a coupe.

 

Just my .02 but I remember when the mustang concepts were first showing up, people on this site were bashing ford for the retro look, saying they ran out of ideals.. etc. etc etc. I even remember people saying chevrolet would never do that! I Love the car, every aspect. But i wont deny that it is a retro look! and i think that a lot of the people who say its not retro are the ones who were bashing the mustang concept a couple of years ago. and they cant admit that stlying cues are taken off the first gen camaro Just as much as the mustang was. Not trying to get flamed just speaking my opinion