The W123 Mercedes may be one of the best-engineered ... look no further than the 240D (1977-1985) or the 300D model (1977-1981). The 2.4-liter OM616 inline-four is a legend of reliability that ...

Mercedes' diesel lineup actually kicked off before the W123 arrived. The W114/W115 generation ... badged as the 240D, but the 300D quickly arrived with a 3.0-liter inline-five underhood with ...