| | New exhaust gas standards |
| Since 1990, the European Union (EU) has been requiring increasingly drastic reductions in emissions. Euro 4 has already superseded the old Euro 3 standard. And in 2009 Euro 5 will demand further significant cuts. |
| Since internal engine modifications alone were unable to offer compliance with the currently applicable Euro standard on exhaust emissions, Mercedes-Benz decided very early on to adopt future-proof technology: exhaust gas processing with BlueTec®, employing SCR (Selective Catalytic Reduction) diesel technology. BlueTec® is a solution which delivers reliable, cost-effective compliance with Euro 4. |
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