The 4-speed manual is repeatedly called 'a huge plus' and a rarity driver of value, while automatics trade lower even as some owners defend the automatic as a relaxed 'gentleman's sports car.' Late 1971 4-speed cars are singled out by several commenters as the sweet-spot build.
The 4-speed manual premium versus the automatic
Mercedes-Benz 230/250/280SL Pagoda (W113) · market