1978 pre-production Mercedes S-class w126 - test and proof

W126 560 TEL wagon https://bit.ly/3eWjdmK
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Important goals in the development of this new series were next to a higher driving comfort and safety the reduction of energy consumption. Using weight reduced materials and a less air resistant body, optimised in the wind tunnel, helped the new S-Class to reduce its fuel consumption by 10 % in comparison to its preceding models. The two eight-cylinder engines of the previous series were replaced by two redesigned units with enlarged displacement and all-aluminium block. The 5.0-liter engine which took the place of the 4.5-liter grey cast iron aggregate was already known from the 450 SLC 5.0. The 3.8-liter all-aluminium engine had been developed after the example of the 5-liter engine from the time tested 3.5-liter V8 with grey cast iron block. Due to their higher power with reduced weight the new V8-engines made a better driving performance combined with a more economic fuel consumption possible. The carburettor and injection version of the 2.8-liter six-cylinder aggregate remained unchanged in the program.

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