Porker:
I'd almost bet my life on a 4 cylinder, based on that sound... And given they just confirmed the C63 will be 4 cylinder hybrid, that doesn't even seem so far fetched.
No, they did not. It was just an "Interpretation" of an interview with AMG boss Moers and what he said about future applications for the M139 engine.
So far, it seems that the next C63 gets a V6 Biturbo hybrid and the C43 gets the M139 4-cyl from the A45.
The AMG GT top models stick to the V8 but yes, AMG muted down all future models, this is something which they actually confirmed (future models being muted).
To be honest: AMG will probably loose half of their clientele because of that, they just haven`t realized it yet. Even if the C63 gets close to 600 hp, the customers will stay away. The sound of these cars was one of the major selling points.
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RC (Germany) - Rennteam Editor Lamborghini Huracan Performante (2019), Mercedes E63 S AMG Edition 1 (2018), Mercedes C63 S AMG Cab (2019), Range Rover Evoque Si4 Black Edition (2019)