The Mercedes-Benz W110 was a series of executive cars produced by Mercedes-Benz from 1961 to 1968. The W110 replaced the earlier W121 "Ponton" series. It was the first Mercedes-Benz series to be officially called a 'Einspritzmotor' ('Fuel Injected Engine'), featuring Bosch mechanical fuel injection. Along with its diesel versions, the W110 established itself as an inexpensive but durable alternative to the expensive and sometimes unreliable European executive cars of the time. In 1967, the W110 was succeeded by the more luxurious W108/09 range of vehicles. Despite its downmarket image, the W110/W111 was used by several European heads of state and government, including French President Georges Pompidou, German Chancellor Ludwig Erhard, and Soviet Premier Alexei Kosygin.