If the speed on display in this video is any indication, the engineers at BMW M should probably get to work on an even hotter M4.
Mercedes drops the details on the C450 AMG 4Matic, the second model in the AMG Sport Line after the GLE450 AMG Coupe. Power comes from a twin-turbo V6 with 367 horsepower and 383 pound-feet of torque, 38 hp more than the C400 4Matic but well down on the 503 hp of the AMG C63.
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