The Mercedes-Benz SL badge has long been synonymous with automotive elegance and sophistication. Each generation of the SL seems to not only capture the spirit of its time but also define it. This was certainly the case when the R107 series debuted in 1971, stepping in to replace the much-loved 230/250/280SL W113 ‘Pagoda’ models. The R107 generation impressively endured with only minor changes until 1989, a testament to its enduring design and appeal as a luxury convertible.
A significant milestone for the R107 was the introduction of a V-8 engine to the SL convertible range. This was a necessary adaptation, considering the new model’s more substantial weight of around 3400 pounds. The styling of the R107 maintained Mercedes’ signature conservative approach, with hints of the Pagoda’s design language, yet it conveyed a sense of greater presence despite similar dimensions.
The inaugural year, 1972, saw the models designated as 350SL, aligning with European nomenclature, even though under the hood resided a potent 4.5-liter V-8 engine. This fuel-injected V-8, equipped with an overhead cam, generated a robust 230 horsepower. It was exclusively paired with a three-speed automatic transmission, as a manual option was not available. The chassis boasted a fully independent suspension and standard four-wheel disc brakes, underscoring its blend of luxury and performance.
Later in 1972, a shift occurred in model naming, with the car re-designated as the 450SL for the North American market and beyond. Another notable change was in how horsepower was measured. The adoption of SAE net ratings meant the 450SL’s power was now listed at 190 hp, reflecting a more realistic measure of engine output. The following year, 1973, brought about the integration of substantial safety bumpers, front and rear, to comply with evolving federal safety standards in the US market. By 1975, further tightening emissions regulations led to a reduction in output to 180 hp with the introduction of a catalytic converter.
Improvements continued throughout the decade. 1976 saw the SL benefit from a continuous fuel injection system and transistorized ignition, enhancing efficiency and reliability. In 1978, Mercedes further elevated the standard features, including automatic climate control and stylish 14-inch aluminum wheels as standard. While 1979 remained largely unchanged, 1980 brought another revision to the fuel injection system, which, while improving efficiency, slightly reduced power output again, this time to 160 hp.
The 450SL era concluded with the 1980 model year, paving the way for the 380SL to carry the R107 torch into the next decade. Despite its relatively short run, the 450SL achieved an impressive average production of about 6,000 units each year. Coupled with Mercedes-Benz’s renowned build quality and lasting reputation, these models are readily available today, offering enthusiasts a comfortable and stylish classic convertible perfect for top-down cruising.
