Volkswagen will be debuting a new BlueTDI version of the mid-sized Passat at the upcoming Paris Motor Show. The BlueTDI Passat uses the same 2.0L common rail injected turbodiesel as the new U.S.-spec Jetta TDI. However, unlike the smaller Jetta which can meet NOx reduction requirements with a lean NOx trap, the Passat uses a urea injection system. The result is a slight bump in output from 140 to 143 hp while fuel consumption is reduced from 42 mpg (U.S.) on the existing Passat sedan to 45.2 mpg (U.S.) on the EU combined cycle. The Variant wagon version with BlueTDI now manages 42.8 mpg (U.S.). The urea injection SCR system allows the Passat to meet 2014 EURO VI emissions requirements when it goes on sale in Europe in early 2009.
Source: Autoblog Green