The S-Class became Mercedes-Benz' flagship line in 1972 and still is even up to the present. The 'S' signifies "Sonderklasse" or special class and is mostly a 4-door sedan line with a brief appearance of coupes from 1981 to 1997. The S-Class is currently in its 5th generation.
The Mercedes-Benz W220 replaced the
W140 thus making it the 4th generation S-Class. After 2 generations, it was once again a purely sedan line and was totally re-designed. Released in 1991, it first had 11 models: the S280, S320/L, S430/L, S500/L, S55/L AMG and S320/L CDI. The AMG tag is for race models while the CDI tag meant Turbo-Diesel. The S400/L CDI was added in 2000, the S600L in 2001 and then the S350/L in 2003. Aside from those 16 models, there were also the 2001 S63 AMG and 2005 S65 AMG. Also in 2003, the W220 underwent a mid-year change which included an interior re-design. All models were replaced in 2006 by the newest generation of the S-Class, the