Ferdinand Porsche worked for Mercedes-Benz when he developed a few vehicles, such as the Nurburg lineup or W08, and the Cabriolet D was part of that range of vehicles.
Developed on a high chassis construction, the Nurburg replaced the six-cylinders vehicles from the W03/04/05 lineup. Its name came from the extensive endurance testing program imagined by the German carmaker when a car ran 20.000 km (12.427 miles) in 13 days on the Nurburgring racetrack. The main model was a sedan, but since the convertibles were also in high demand, the carmaker offered them in a few open-top versions as well, such as the Cabriolet D.
Due to the long, inline-eight engine, the car featured a long engine compartment. Just like its siblings, it featured a pair of headlights mounted on a curved chromed bar between the front fenders. From its sides, the curved front fenders were extended toward the back of the vehicle with a set of side steps. Its four-door configuration made it an easier car to live with, especially when the owners had to transport more than two passengers.
Even though it sported a shorter wheelbase than the Cabriolet C, the D-version still provided enough room for five adult passengers inside. The cabin featured a dash panel covered with wood, while the instrument panel took center stage. Its four-spoke steering wheel featured the commands for ignition timing and fuel mixture.
Mercedes-Benz installed the same engine with different power outputs for the entire Nurburg range. The 4.6-liter supercharged version provided 80 hp, while the full-option model featured a 5.0-liter 100 hp unit.