The RS6 is a sedan with an MTM 730 hp upgrade.
MTM RS6-R 730 hp
0-60 mph - 4.2 secs
0-100 km/h - 4.37 secs
0-200 km/h - 12.79 secs
0-250 km/h - 20.6 secs
100-200 km/h 8.43
RS6 was faster in the region 200 - 250 km/h!
7.81 seconds for the RS6 MTM.
8.33 seconds for the Carrera GT.
I think these figures speak volumes about the potential of this engine, especially as I believe all of that extra 150hp was achieved with no changes to it's internals or turbos, simply a ECU flash and exhaust.
INCREDIBLE.