Mercedes S350 BlueTEC 4MATIC: Yes, A Diesel, But. . .

This is the cap for the liquid that must be added to the new 2012 S350 BlueTEC 4MATIC Mercedes to keep it running without falling out of compliance with the emissions regulations.

This is the cap for the liquid that must be added to the new 2012 S350 BlueTEC 4MATIC Mercedes to keep it running without falling out of compliance with the emissions regulations. It’s called “AdBlue.” Chances are, this is going to be done at the dealership. If you had one of these, you might never see this.

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This is the diesel engine that is in the new 2012 S350 BlueTEC 4MATIC. While many people think that diesels are the sorts of things that are found under the hoods of the clanky and cranky white pickup trucks that are driven by landscaping service people, this is an engine that is both smooth and (comparatively speaking—by which we mean compared to internal combustion engines in Mercedes vehicles, not aforementioned pickups) quiet.

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This is the new 2012 S350 BlueTEC 4MATIC. Yes, an S-Class. A luxury car. With a diesel.

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All of which is to say that when you think “diesel,” rethink it.