yes, mercedes benz had the old iron 3.0l 5 cyl OM617 in both NA and turbo forms, it was used in the 300D W123 and some 126 sedans and some other machines too.
Then they had the OM602 2.5L 5cyl in both NA and turbo, it was iron block alu head, used in the 250D 124 sedans, then was the OM605 which was DOHC NA 20V 5cyl used the later E250D W124 chassis. This engine also was used in the 202 and 210 chassis and some vans too. The 60x are fanstastic engines.