Sorry, I disagree and stand by my point.
The engine, as I've said in this thread and in others, is very similar, if not nearly the same as the engine used in Europe. As I also said, in this thread and others, is that, yes, the particulate filter is new, though not untested. It's a system that most diesels are going to, and is being used, in part or in whole, by other manufacturers such as MB and BMW. My guess is that Subaru and Honda will use a similar system when they release their oil-burners next model year.
So, to prove my point and not just make this a pissing match;
From: automobile.com (see specific link below)
http://tinyurl.com/6kupxx
"What Volkswagen has done to make the Jetta TDI 50-state legal (completely compliant with Tier 2 Bin 5) is quite impressive. The engine is an entirely new development in contrast to the old 1.9 PD-style diesel, that used a single
fuel injector per cylinder.
Instead, the engine is based around newer common-rail technology that uses a single injector for all cylinders that is capable of delivering fuelto the engine at much higher pressures. This alone is responsible for improving the combustion of the engine, making it smoother, quieter, more powerful and cleaner than traditional diesel engines.
This isn't really anything new, as Volkswagen has been offering a common-rail TDI engine in European-market cars for years now, including the European Mk.V Jetta.
In fact, the engine, in its base form, is pretty much identical to the 2.0-liter TDI engine sold in Europe. It produces similar – not identical – amounts of power and torque to its overseas cousin. Our model makes 140 horsepower and 240 lb-ft of torque, versus their 138 horsepower and 236 lb-ft of torque. The key difference is its particulate filter. It's similar to the type of system fitted to cars in Europe, but is even more effective at ridding the exhaust of NOx particles, the ones that have been causing so many difficulties for automakers and so much offense to lawmakers. In addition, the engine features various other tweaks to help it meet our emissions standards, which, by the way are now stricter than those in Europe. Despite the whole “Clean Diesel” adage, there isn't any fancy after-treatment system like Bluetecfor a couple of reasons; first, Volkswagen didn't want to equip the car with something that required maintenance, and second, the engine didn't need it."
Bold text my emphasis, not the original author's.
-Josh