The Mercedes-Benz SL lineage has consistently represented automotive elegance and refinement. Each generation of the SL seems to both define and be defined by the spirit of its time. This was certainly the case when the R107 series SL debuted in 1971, taking over from the widely admired 230/250/280SL W113 “Pagoda” models. The R107 family remained in production with only minor updates until 1989, an exceptionally long lifespan for a luxury convertible.
With the R107, Mercedes introduced a V-8 engine to its convertible offerings, a necessary upgrade given the new SL’s substantial weight of around 3400 pounds. The design was characteristically understated, bearing a subtle resemblance to the earlier pagoda top models, yet despite similar dimensions, the R107 conveyed a more substantial presence.
Initially in 1972, these models were designated 350SL, aligning with European nomenclature, even though they were equipped with a robust 4.5-liter V-8 engine. This fuel-injected V-8 boasted an overhead camshaft and produced 230 horsepower. It was paired exclusively with a three-speed automatic transmission, as a manual option was not available. The car featured a fully independent suspension and standard four-wheel disc brakes.
Later in 1972, the model designation was revised, and the 450SL nameplate became official moving forward. Another change involved the horsepower rating method, with the new SAE net standard resulting in the 450SL’s power being listed at 190 hp. The 1974 Mercedes 450sl saw the integration of substantial safety bumpers at both the front and rear, in compliance with evolving federal safety regulations. By 1975, stricter emissions standards led to a further reduction in output to 180 hp with the introduction of a catalytic converter.
In 1976, the SL adopted a continuous fuel injection system, along with transistorized ignition. Two years later, in 1978, Mercedes enhanced the standard features list with automatic climate control and stylish 14-inch aluminum wheels. The specifications remained consistent for 1979, but in 1980, a revised fuel injection system further decreased the power output from 180 hp to 160 hp.
The 450SL model concluded its production run with the 1980 model year, with the 380SL taking over as its successor in the 1980s. Before its discontinuation, the 450SL achieved an average annual production of approximately 6,000 units. Coupled with Mercedes-Benz’s renowned reliability, these classic convertibles are readily available today and offer a supremely comfortable open-top driving experience, making the 1974 Mercedes 450SL a sought-after vintage cruiser.
