The clear lines without accessories and with outstanding space are, like the W 108/109 luxury class saloons, the work of designer Paul Bracq. Four and five cylinder as a petrol or a diesel engine received the internal model designation W 115, the large six cylinder and the coupé built from 1969 are designated W 114 – common parlance was simply a "stroke 8", after the release year 1968. The "stroke 8" had front disc brakes, double wishbone steering on the front axle and a modern semi-trailing arm rear axle as standard. There are also new values in the interior, front and rear head restraints, automatic belts and a centre console, which is still stylishly mimicked in today's models. Those who found the sharp-edged block with the Cd value of a wall unit too minimalist, from 1969 they were able to choose the two-door version without a B-pillar, with flatter windows and superior equipment.