The design of W204 was finalized in 2003 and a German design patent application was first filed on 9 September 2004, demonstrating a W204 fiberglass design model. An industry first, the digital testing allowed for crash testing before a physical prototype existed. In the summer of 2003, the development of the W204 C-Class used a "digital prototype", a 2.1 terabyte digital replica of the car, over a virtual distance of 15 million miles.
13.1.5 C 63 AMG Coupé Black Series Performance Studio Edition (2012–2015).