<p>The AMG 4.0-litre V8 biturbo engine in the S 63 4MATIC+ comes exclusively in the highest performance stage to date rated at 450 kW(612 PS). The peak torque of 900 Nm also represents a new maximum. At the same time as the S 63 4MATIC+, the top-of-the-range model S 65 receives a visual update that underscores the superiority of the high-end 12-cylinder model. Thanks to the highest stage of development of the V8 and V12 biturbo engines, both new models deliver more output and torque than the competitors.</p>