The launch of a lightweight BMW M3 back in 2003 - the now iconic and appreciating CSL - was big news. When the E46 M3 CSL hit the streets, there were gasps. Here was a hardcore statement of intent.

CSL is a sacred name in the BMW universe, appearing on only the most sought-after models. It started with the company's dominant touring car model, called the 3.0 CSL, and then disappeared for almost ...