In 1973, Mercedes-Benz introduced a closed version of their SL roadster called the 350SLC. The SLC coupes were very much similar in appearance to the hard-top-equipped convertibles, though they had a taller roofline and were 14 inches longer due to the presence of two usable rear seats. In 1976 the SLC was equipped with a more powerful 4.5-liter, fuel-injected V-8 that featured an overhead cam, with a continuous fuel injection system, as well as transistorized ignition. and delivered 230 horsepower. It was paired with a three-speed automatic, with no manual transmission on offer. Suspension was fully independent and four-wheel disc braking was standard. A sunroof was a popular option.
The 450SLC model ended production with the 1980 model year, Before it was gone, however, nearly 32,000
450SLCs were sold.