Mercedes-Benz · W146 · 1984-1988

W146 Guides

Seek low-mileage examples with complete service records and original interior trim for best value retention. Verify turbocharger condition and fuel injection system integrity before purchase as diesel components require specialized maintenance.

IssueSeverityNotes
Turbocharger seal degradationHighLater models experience oil seepage from turbo housing seals
Fuel injector carbon buildupMediumSymptoms include rough idle and black smoke on acceleration
Glow plug relay failureMediumCold start difficulties in winter months