Originally Posted by Last E92 M3
What do you mean by they dont?
DSG was in A3, no?
What's this "SMG" type transmission?
Any detail info on R8 transmission?
DSG is available in the A3, GTI, R32. These are cars with transverse mounted engines and Haldex based AWD systems. They also make at most 350NM of torque. (it's not even available in the Euro only S3, because of the torque limitation)
DSG is not available in any vehicle right now with a longitudinal engine, nor is it any vehicle that makes over 350NM of torque (except they Veyron, which doesn't count cause it's a cost no object, limited production setup).
The R8 transmission is just like BMW's SMG transmission or Ferrari's F1 gearbox. It is a conventional manual transmission with hydraulics and a computer to operate the clutch and change the gears.
I hope that clears things up.