Thanks to the highly effective exhaust treatment system developed by Mercedes-Benz, BlueTEC vehicles fulfill the strictest global emissions standards to make them the cleanest diesels in the world. With the E 250 BlueTEC concept, which was created specifically for the North American market, Mercedes-Benz is now demonstrating how BlueTEC technology in the E-Class can be combined with a four-cylinder engine with optimized fuel consumption. When fitted to the 7G-TRONIC seven-speed automatic transmission, the E 250 BlueTEC boasts fuel economy of 28 mpg U.S. in city traffic and 39 mpg U.S.on the motorway (U.S. FE standards). The E 250 BlueTEC concept fulfills the strictest emissions standards, including Bin 5 in the U.S., and would even meet the considerably toughened limits laid down in EU6 legislation not due for implementation until 1 September 2014.
The EU6 standard specifies maximum nitrogen oxide emissions that are less than half of those permitted by the current EU5 standard. The following is an overview of the current and future limits for diesel vehicles in the EU*:
| | EU 5 All new vehicles after 1.9.2009 | EU 6 All new vehicles after 1.9.2014 |
| CO (g/km) | 0.50 | 0.50 |
| NOx (g/km) | 0.18 | 0.08 |
| HC + NOx (g/km) | 0.23 | 0.17 |
| Particulate emissions (g/km) | 0.005 | 0.005 |
* Group M1 - passenger vehicles with no more than eight seats plus driver. Max. gross vehicle weight 3,500kg.Test procedure NEDC 2000
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