Official: 2012 Mercedes SLK AMG gets New 422HP 5.5-liter V8 with Cylinder Deactivation Mode

Despite rampant rumors on the development of a turbocharged V6, Mercedes-Benz has chosen to continue with a naturally aspirated V8 engine in the next generation of the SLK AMG that is due to make its first public outing at the Frankfurt Motor Show this fall.

While we only get to see a fuzzy photo of the 2012 SLK 55 AMG, the firm with the three-point star emblem revealed plenty of details around the roadster model’s new eight-cylinder engine.

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