1984 Mercedes-Benz 300 D Turbo Diesel w123 with OM617

In January 1976 the W 114/115 series "Stroke Eight" models were replaced by a totally reconstructed type range with the internal designation W 123. The model family ranged from the 2.0-liter 4-cylinder Diesel with 55 hp to the 2.8-liter 6-cylinder injection engine with 185 hp.

The new model range orientated itself to the S-Class which had been produced for three and a half years. Thus the new medium-size type was also provided with a semi-trailing arm rear axle that had already been introduced with the "Stroke Eight" models. Furthermore, it was equipped with a double-wishbone front suspension with zero steering-offset. The most important improvements, in comparison to the preceding model range, was the even more stable security passenger cell with stiffened roof-frame structure, high-strength roof, and door pillars as well as reinforced doors. The energy absorption of the front and rear deformation zone in the front and the rear end was significantly increased by a controlled deformation capacity.

In June 1980, three new engines were introduced - one Diesel and two petrol engines. The 3.0-liter 5-cylinder Diesel engine with exhaust-gas turbocharger, which had been used in the S-Class export model 300 SD for almost two years, was now also available in series 123. First, however, only for the estates. A year later, in August 1981, the turbodiesel was also offered in the 123 series saloon and coupé. Both, however, were exclusively reserved for export to North America.

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photo: ©2019 Courtesy of RM Auctions