Nevada requires a smog check on all light-duty diesels. What they measure is the exhaust opacity, and all 3 of my cars aced the test. The highest was 3% I think.

You're right, some old MB diesels smoke a lot, but that's because they're not well maintained. Well maintained MB diesels will only smoke a little bit when cold or just for a second when accelerating hard.

Still we all know that old MB diesels produce a certain smell. I, like many people on this board, don't mind it. I think old gasoline cars and trucks smell a lot worse.

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2004 VW Jetta TDI (manual)

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