Mercedes-Benz working hard on the 2013 S63 AMG powered by the 5.5 twin-turbo V8

A heavily disguised version of the upcoming 2013 Mercedes-Benz S63 AMG based on the new W222 platform was spotted recently while testing. The carmaker has been keeping itself busy with preparing a new S-Class for the global market. What the carmaker will display at the 2012 Geneva Motor Show is highly anticipated. Fans expect the AMG to offer the latest in technology as well as a high dose of power and speed.

The spy photos fail to show even an inch of the body of the AMG; however, it’s likely that the German engineers were just testing if the chassis will be able to meet the demands of performance driving. This test mule is expected to have parts that won’t be used in the production car.

When it comes to exhausts, it’s likely that it hasn’t yet finalized work on the entire powertrain. Obvious from these shots are the bigger break discs and more open front air intakes. There’s a heated discussion on what will power it. The new 5.5-liter V8 with twin-turbos are used on the current car. It’s probable that the drive programs will be tweaked and equipment levels are likely to change as well. It will also have a more spacious legroom than ever before. [via - 4wheelsnews]