1937 Mercedes-Benz 540 K Sport Cabriolet A
Mercedes-Benz created a distinctive styling approach with the Sport Cabriolet A, positioning the radiator behind the front axle to achieve dramatically extended front and rear fenders.
This design served as a bridge between the company’s more formal cabriolet models and the sportier Spezial Roadsters, creating a sleek profile enhanced by a lower convertible top and dual side-mounted spare tires integrated into the front fenders.
The 540 K was introduced in 1936 as the successor to the 500 K, and the Sport Cabriolet A was one of its most exclusive body styles.
Approximately 32 examples of the Sport Cabriolet A are believed to have been produced, making it among the rarest of the 540 K family (total 540 K production is generally cited at around 419 cars across all body styles).
Power came from a supercharged 5.4-liter (330-cubic-inch) inline eight-cylinder engine producing 115 horsepower in normal operation and up to 180 horsepower when the driver-activated Roots-type supercharger engaged. The engine used a single updraft carburetor, with power delivered through a four-speed manual transmission.
Advanced suspension technology included independent double-wishbone front suspension with coil springs paired with a swing-axle rear suspension, while four-wheel servo-assisted hydraulic drum brakes provided stopping power.
The 540 K rode on a 117.3-inch or 130-inch wheelbase depending on chassis specification, and curb weight for the Sport Cabriolet A was approximately 5,300 pounds (2,400 kg), contributing to the car’s commanding road presence and refined driving characteristics.
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