The well-known nickname "/8" of the mid-range models goes back to an in-plant designation for the year of presentation 1968. At first, only the four-cylinder models 200, 220, 200 D and 220 D are available. In 1970, the two six-cylinder models 230 and 250 follow, and in 1972, the legendary six-cylinder engine with two overhead camshafts appears in the 280 and 280 E. In 1974, the world's first five-cylinder diesel engine is installed in the series-produced 240 D 3.0 passenger car. As a matter of fact, it is the first five-cylinder engine ever built for passenger cars. The series also stands for another record: the Mercedes-Benz with the highest recorded mileage known to date is a Greek taxi, a 240 D model, built in 1976. The owner, taxi driver Gregorios Sachinidis from Thessaloniki, clocked 4.6 million kilometres.