We're not 100% positive that this is the loudest Mercedes in Southern California, but it has to be one of them. It's defintely the loudest Mercedes that we've ever dynoed, that's for sure! Fitted with a set of headers and a midpipe from Agency Power, this C63 AMG is somehow dead silent at idle, yet brutally loud at wide open throttle. Check out the video below to hear this beast for yourself.

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