With the retiring of the E93 M3 Convertible, the world said goodbye to the last naturally aspirated engine made by BMW. And what an ... and characterized the E60 M5. That car was always controversial.

When the E60-gen BMW M5 came out in 2004, with its menacing naturally aspirated V10, many thought that sports sedans couldn’t get more exciting. The 5.0-liter engine, which was shared with the ...