Volkswagen unveiled the cleanest ever TDI engine. First test drives demonstrate the high potential of Volkswagen technology, which consequently reduce nitrogen oxide. In the VW Jetta a new 2.0 litre Common Rail diesel engine with a nitrogen oxide reservoir catalytic converter was used, which complies to the Californian emission standard “Tier 2 / Bin 5″. These requirements are considered the most stringent worldwide. The first production run of the “Clean TDI” with nitrogen oxide post-treatment system will be made during 2008 in the USA. Via media.vw.wcom