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Four years after the presentation of the energy concept the SL models were again thoroughly modernised and presented at the International Motor Show in Frankfurt in September 1985. There were minor external changes, improved front wheel suspension and above all, a new range of engines.

The most spectacular addition to the engine range was a 5.6-liter V8 with 272 hp, which was obtained by giving the 5-liter a longer stroke. For the domestic market, the 5.6 was not used in the SL, however, but only in the S-Class sedans and coupes. The 560 SL was only exported to the USA, Australia and Japan, but as a detuned version with a catalytic converter and only 230 hp because of the emissions regulations in these countries.