Jetta with Clean Diesel has been available across the USA since August 2008

One of the cleanest and most fuel efficient engines on sale in the USA

Fulfils the strictest emissions regulations in the world, including the BIN5 standard which is mandatory in the American states of California, Massachusetts, New York, Vermont and Maine (roughly equivalent to the Euro 6 standard which becomes law in 2014)

Uses a 2.0-litre four cylinder common rail TDI engine producing 140 PS and 320 Nm (236 lbs ft) of torque at 1,750 rpm

Achieves ‘highway’ consumption of 41 mpg (US) (30 mpg (US) city)

Features two key ‘Clean Diesel’ modifications which substantially reduce NOx:
          o Exhaust gas recirculation: Within certain limits, the production of nitrogen oxides can be resolved by optimised combustion chamber geometries and extremely precise injection processes at extremely high pressures.  It is also necessary to limit combustion temperatures and reduce the concentration of oxygen with which the nitrogen reacts to produce nitrogen oxides.  Both goals can be accomplished by external exhaust gas recirculation in the combustion chamber.  The gas is taken from the exhaust system and cooled on the way to the combustion chamber.  These actions can reduce temperature-dependent nitrogen oxide emissions by up to 60 per cent.
          o The rest is treated by the NOx storage catalytic converter which soaks up the nitrogen oxides like a sponge with very high efficiency.  Similar to the particulate filter, it is cleaned regularly and without the driver noticing.  Engine management switches over to an operating mode with richer combustion for a few seconds to accomplish this.  The NOx storage catalytic converter is intended for use with ultra low sulphur diesel fuel (less than 15 parts per million)  

Plans to bring this model to the UK are yet to be confirmed