Mercedes four wheels that inspired from 6.3L V8 will have a different variant. The 6.3-liter AMG V8 will make a twin-turbo 5.5-liter V8 engine and the new engine models will start selling in the last quarter of 2010. The official unraveling of the engine will happen at next year’s Paris Motor Show following which the engine will hit the production facility. Mercedes wants to focus on better fuel economy whilst also reducing the emissions however performance is something the brand will not like to sacrifice as that could hurt the sales figures. The naturally aspirated V8 variant renders between 450 and 520hp with 440 lb-ft of torque. As far as the economy goes, the city numbers reflect 12mpg which are bettered on the highway by 7mpg.