Mercedes-Benz Ponton

The Mercedes-Benz "Ponton" series is a range of sedans / saloon car models from Mercedes-Benz, introduced starting in 1953, and subsequently nicknamed 'Ponton' (the German word for "pontoon"), referring to its ponton styling, a prominent styling trend that unified the previously articulated hood, body, fenders and runnings boards into a singular, often slab-sided envelope. At the time, Mercedes itself did not refer to any of its cars using the nickname.

Mercedes stretched the 'Ponton' saloons into a range that became the automaker's dominant production models until 1959.

The 1953 W120 180 four-cylinder sedans were Mercedes' second totally new series of passenger cars since World War II, following the 1951 introduction of the top of the range W186 300 “Adenauer”, and replaced the pre-war-designed W136 170 and 170 S. Contrasting very visibly with the traditional distinct fenders on that body-on-frame model and the ones before it, the 'Pontons' were Mercedes' first monocoque, unitary body production models.

Mercedes expanded the base Ponton model into a diversified line, developing multiple series based on the 180, by introducing more engines and stretching the body. Six-cylinder models received a longer nose, and 'S'-models also had a longer passenger compartment, offering more legroom. A six-cylinder coupe and convertible were further derived, and a shortened floorpan of the four-cylinder sedan was also modified to serve as the structure for the W121 190 SL roadster.

The 'Ponton' saloons were the automaker's main production models until 1959, adding up to 80% of Mercedes-Benz car production between 1953 and 1959, with some models lasting until 1962. The range was succeeded by the range of "Heckflosse" (or "Fintail") models.