High Quality Content by WIKIPEDIA articles! The Mercedes-Benz W111 was a chassis code given to its top-range vehicles, including 4-door sedans, produced from 1959 to 1968, and 2-door coupes and cabriolets from 1961 to 1971. The W111, was initially attributed only to 6-cylinder cars with 2.2 litre engines. The luxury version with big-block 3 litre engines were given the chassis code W112. The entry-level vehicles with 4 cylinder engines were called W110. All three versions W110, W111, and W112, in both 2 and 4 door bodies, were built on an identical chassis.