It is even more power and torque than the AMG GT R sees. Why? Because the competition is over 600 horsepower from 4.0 liters of displacement and the new E63 is going to be very heavy with standard all wheel drive. It likely also means greater gains with an ECU tune. Yes, manufacturers pay attention to this and know in the turbo era this matters.
Will it be any lighter than the current generation W212 E63 AMG S 4Matic which weighs just over 4500 pounds? We will see. It's hard to trust weight claim figures from any German manufacturer as they continue to exaggerate weight loss figures.
The bottom line is the next generation mid-size luxury performance sedan battle will be the most boring of all time. Everyone will have all drive and everyone will have a twin turbo direct injected V8 in the same displacement range with the same turbo layout. Only Cadillac might provide a significant alternative that breaks from this recipe.
How will this play out? BMW will likely win if they offer all wheel drive and a dual clutch transmission with a 4.4 liter S63TU V8 on the next generation M5. Audi and Mercedes-AMG are not offering dual clutch transmissions with their top offerings. That means BMW is poised to build a German four-door GTR. Porsche is the wildcard with the new Panamera.