Quote>"Mercedes-AMG's familiar twin-turbo 4.0-liter V-8 will sit under the hood. Tuned here for 643 hp, the engine makes its peak torque of 664 lb-ft from 2,500 to 4,500 rpm and its peak hp from 5,500 to 6,500 rpm. While the torque peak may be a little high, that's no problem because it's supplemented by a rear-mounted electric motor that spins up a maximum of 204 hp for 10-second blasts and can continually provide 94 hp. The motor's torque, which tops out at 236 lb-ft, comes on immediately to fill in any gaps in power delivery at the low end.
Together, the engine and motor make 843 hp and 1,033 lb-ft, which propel the car from 0-62 mph in 2.9 seconds, to 125 mph in less than 10 seconds, and to a top speed of 196 mph. Mercedes only released European specifications, so U.S. specs may change slightly."
Well that's QUICK! And the torque is 1355NM circa!