The SL class was in production since 1954 by Mercedes. The first model with SL designation was the 300 SL, also known as Gullwing. The meaning of SL in German means Sportlich-Leicht, or Sport Lightweight in English. Later on, a discussion around the meaning happened, and it was believed to mean also Sport Leicht, Super Leicht, and Super Super. In 2017 it was announced that the definition of SL is Super-Leicht. So far six generations have been introduced. The first generation was produced from 1954 to 1963, including the models 190 SL, 300 SL Gullwing, and 300 SL Roadster.
The second generation was built from 1963 to 1971, introducing the models 230 SL, 250 SL, and 280 SL.
The third generation was being manufactured from 1971 to 1989, presenting the models 350 SL, 450 SL, 280 SL, 380 SL, and 500 SL, in the order mentioned. They were followed by 300 SL, 420 SL, 500 SL, and 560 SL all of which produced from 1986 to 1989.
The fourth generation was produced from 1989 to 2002 including the models 300 SL fo the US market, 300 SL 24, 500 SL, SL 280, SL 320, SL 600, SL 73 AMG, SL 70 AMG, SL 60 AMG and SL 55 AMG.
The fifth generation was in production from 2002 to 2011, introducing the improved models SL 500, SL 55 AMG, SL 600, SL 65 AMG, and SL 350. A facelift version of the SL was produced from 2008 to 2011, introducing the R230 SL, SL 63, and SL 350.
The sixth generation has been in production since 2012, so far including SL R231, SL 500, SL 350. Improved facelift versions are also available, such as SL400, SL 450, SL500, SL 550, AMG SL63 and AMG SL 65.
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