One other thing I wanted to mention is that the EPA pollution scale that we were talking about is the latest one for new cars and most cars from the 90's, gas or diesel, would score 0 on it. In fact even the seemingly dirty 1/10 score that for example the 2005 CDI got is no dirtier than that of a 2001 gas Camry or Audi which got the same score. Because of the late introduction of ULSD, diesels were a few years behind gassers on the EPA pollution scale but they have since caught up, and they still enjoy lower greenhouse gas emissions and better fuel economy as they always have.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL