1. Mercedes R107: The iconic roadster that defined an era

2. The birth of the R107 series

3. Power and performance

4. Evolution and innovation

5. The final years and legacy

6. Conclusion

Mercedes R107: The iconic roadster that defined an era

The Mercedes-Benz W113 series, known for its distinctive ‘Pagoda’ roof design, had enjoyed eight years of success. However, shifting political landscapes and increasing demands for cleaner, safer, and more repair-friendly vehicles signaled the end of its development cycle. Enter the R107 series—a car that, despite early skepticism regarding its size and styling, would go on to become the longest-running model in Daimler-Benz history.

The birth of the R107 series

Design work on the R107 began in 1965, marking a radical departure from its predecessor. Gone were the flowing curves, replaced by a more boxy, modern aesthetic. Friedrich Geiger, Mercedes-Benz’s Chief Designer, played a crucial role in refining the vision, ultimately selecting a design sketch by Joseph Gallitzendörfer.

In June 1968, Mercedes-Benz reviewed three full-scale styling models and opted for the third iteration, which retained elements of classic SL DNA while embracing a bold new look. Safety considerations and the growing American market led to an increased vehicle size and new engineering advancements. The R107 featured a longer wheelbase and wider body, allowing for improved passenger comfort and a host of luxury features.

Power and performance

At launch in April 1971, the 350SL debuted with a 3.5-liter V8 engine producing 200 horsepower. The coupe variant, the 350SLC, followed at the Paris Salon later that year. The R107’s all-steel construction, coupled with new safety measures, added weight but also made the structure significantly stronger, eliminating the need for a Targa-style roll bar.

By 1973, Mercedes-Benz introduced larger-displacement models, including the 450SL and 450SLC, with a 4.5-liter V8. European markets later received the 280SL and 280SLC, powered by a 2.8-liter straight-six engine. In the mid-1970s, fuel injection technology transitioned from D-Jetronic to K-Jetronic, reducing horsepower slightly but improving reliability and efficiency.

Evolution and innovation

The 1977 Frankfurt Motor Show saw the unveiling of the 450SLC 5.0, a prototype featuring aluminum body panels and an alloy engine block. By 1980, Mercedes introduced a new range of aluminum-block V8 engines, leading to the introduction of the 380SL, 380SLC, 500SL, and 500SLC models. American versions had reduced power output due to stricter emissions regulations, but European models retained their performance edge.

The SLC coupe variant was phased out by 1981, making way for the SEC series. Despite increasing global emissions regulations and a growing emphasis on luxury over sportiness, the R107 continued to sell well, reaching over 200,000 units by 1985.

The final years and legacy

With demand still high, Mercedes-Benz introduced an updated version of the R107 for the 1986 model year. Engine options included 3.0-, 4.2-, 5.0-, and 5.6-liter powertrains, with the 5.6-liter V8 producing 242 horsepower in markets like the U.S., Japan, and Australia. Other refinements included a four-speed automatic transmission with selectable driving modes, larger alloy wheels, upgraded brakes, and revised suspension for improved ride quality.

The R107 remained in production until July 1989, marking an 18-year production run with over 300,000 units built, including the SLC variants. Its successor, the R129, had big shoes to fill, but the R107 remains a timeless classic, cherished by enthusiasts and collectors alike.

Conclusion

The Mercedes-Benz R107 redefined the SL series, balancing luxury, safety, and performance in a package that stood the test of time. Its enduring popularity and impressive production lifespan solidified its status as one of the most iconic roadsters in automotive history. Today, the R107 continues to be a prized collector’s item, a testament to Mercedes-Benz’s commitment to excellence.