The canny Swabians in Stuttgart will soon be putting the most powerful E-Class ever on the road, in the shape of the E 63 AMG. It's not quicker, but more powerful and 12% more economical than its predecessor and in-house tuner AMG will be ready to roll out the E 63 in August 2009. With its 525 PS strong naturally aspirated 6.3 litre V8 engine, the AMG leaps from 0 to 60 in 4.5 seconds. The AMG Performance Studio will also be ready to add more custom individuality when orders are placed. The Mercedes E 63 AMG will be gracing showrooms from August 2009.