Mercedes' new twin-turbo 4.0-liter V8 engine will debut in the AMG GT but it will eventually spread across the lineup.

Mercedes' new twin-turbo 4.0-liter V8 engine will debut in the AMG GT but it will eventually spread across their lineup.

We've already reported it will be used in the new C63 and E63 AMG but Car & Driver is reporting it will also power an AMG variant of the 2015 / 2016 GLK. Even further down the road, we can expect the engine to be used in the ML, GL and S63 AMG.

There's no word on what these cars will be rated at but the AMG GT S will have an output of 510 PS (375 kW) and 650 Nm (479 lb-ft) of torque. There will also be an entry-level variant that produces approximately 462 PS (340 kW).

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