The Mercedes-Benz W 120 and Mercedes-Benz W 121 are technically similar inline-four cylinder sedans made by Daimler-Benz. The W 120 was first introduced by Mercedes-Benz in 1953. Powered initially by the company's existing 1.8 liter M 136 engine, it was sold as the Mercedes-Benz 180 through 1962. From 1954, Mercedes-Benz also offered the W 120 with a diesel engine as the Mercedes-Benz 180 D. The Mercedes-Benz W 121 was introduced as the Mercedes-Benz 190 in 1956, powered by a 1.9 liter M 121 engine. From 1958, the W 121 was also offered with an OM 621 engine, sold as the Mercedes-Benz 190 D through 1961.
The W 120 was nicknamed the Ponton (along with other Mercedes models) after its introduction, because it employed Ponton, or pontoon styling, a prominent styling trend that unified a car's previously articulated hood, body, fenders and running boards into a singular envelope.
Together with the more luxurious and somewhat larger 2.2 liter inline-six cylinder W 128 220 they constituted 80% of Mercedes-Benz' car production between 1953 and 1959.
The W 120 was the first predecessor to the medium size Mercedes-Benz E-Class sedan line
To get a good idea of the car, we advise you to come to one of the viewing days.