The new ML63 AMG pics are released today.

But keep in mind, even Porsche and M-Benz are not without problems.
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The ML63 routes power to all four wheels using a tweaked version of Mercedes' 4Matic all-wheel drive system that has a 40/60-percent front/rear torque spilt and now uses AMG's seven-speed automatic transmission. Standard power is more than adequate at 518 hp and 516 lb-ft of torque, but the optional AMG Performance Package increases that to a massive 550 hp and 560 lb-ft of torque thanks to a maximum boost jumping from 14.0 to 18.8 psi.
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Read more:
First Look: 2012 Mercedes-Benz ML63 AMG - Automobile Magazine