http://www.w116.org/
In May 1978 the model 300SD was introduced to the USA and Canadian markets. The new S-Class model - for the first time in the history of this vehicle category - was driven by a diesel engine. The 3.0 L 5 cylinder, which had proven so well in the types 240D 3.0 and 300D, was fitted with a turbocharger. The development of this unusual S-Class variant had been started with the goal to fulfil the lower consumption figures introduced by the US-government.
1980 was the last year in the 116 bodystyle.