1957 Mercedes-Benz 300SL Roadster

300SLs were technologically superior to anything else, with direct port fuel injection, dry sump systems, Alfin drum or disc brakes—and they all worked

The Mercedes Benz 300SL roadster was introduced in 1957 as a direct descendant of the famous Gullwing. It’s rare in automotive history that a convertible would bring about the demise of the coupe version on which it was based, however with the 300SL it was a case of succession—the roadster replaced the Gullwing.

As the roadster was based on the Gullwing, there were many similarities between the two, the former encompassing several enhancements that were to increase the car’s desirability. The roadster had styling cues that changed only slightly. Larger fenders, different headlights, a smaller grille and a chrome strip down the side distinguished it from its brother.

Since the 300SL convertible lacked the strength and rigidity offered by the Gullwing’s roof, engineers had to redesign the chassis to maintain structural integrity. As a consequence, the car is slightly heavier, yet has an extra 20 horsepower to help offset the difference. Aerodynamics...