
Driving down the Autobahn at 120mph is fun no matter what, but doing it in a 2010 VW Golf TDI clean diesel technology prototype makes me a truly inspired driver. The dialed European suspension handles as fluidly at 120mph as it does at 30mph (not that we recommend breaking any speed limits but there are none on the Autobahn).
Passing through countless villages while carving up the German countryside in a clean diesel engine makes passing all those wind-farms (clusters of giant wind energy turbines that look like robotic windmills) feel more like a pleasure cruise through a clean technology futureland than a press event — so much so that me and my fellow journalist/go-to driving partner/guy who took the picture, Big Dan Barna, accidentally got lost in four-wheel euphoria and completely missed the afternoon session at the track. That’s cool, I’ll let the real car guys take my turn there, because I’m much more inspired by the forthcoming 2010 Golf TDI than anything that whips around a track — besides, I’m doing 120mph on zee Autobahn, what more could I want?
With all do respect to the techies (particularly the green techies) of the world, here’s the skinny from VW representative Thomas E. Wegehaupt:

What makes these diesel engines clean diesel? How are they different from traditional diesel engines with regard to sustainability?
Our current 2.0 liter clean diesel TDI engine is very different from its predecessors. Perhaps the largest and most important change is the addition of a Common Rail injection system with Piezo fuel injectors. This system allows for an extremely efficient combustion process that results in a quieter engine, improved mileage, and cleaner exhaust leaving the combustion process which equates to cleaner emissions down the line.
The exhaust system of the 2.0L TDI engine is also very different from previous engines and contains, among other things, a Diesel Particulate Filter, NOx Reduction Catalytic Converter and Sulfur Catalytic converter.
Between the new common rail injection system and the advanced exhaust system, our clean diesel TDI’s meet the most stringent emissions standards of California and all 50 states…all without compromising driving dynamics.
How did VW arrive at the decision to back diesel as opposed to other clean fuel technologies?
Volkswagen believes very strongly that today’s clean diesel technology is the best fuel alternative technology that is currently available in the marketplace today because of the many benefits that today’s clean diesel technology provides, such as:
· Provides more than 30 percent better fuel efficiency.
· Approximately 25 percent less greenhouse gas emissions than a comparable gasoline engine.
· Our current clean diesel technology eliminates 98% of particulate emissions.
· Less foreign oil imports: EPA research has concluded that if diesels were to power one third of all light duty vehicles in the U.S., the shift would save approximately 1.4 million barrels of oil a day—equal to the daily shipments from Saudi Arabia to the U.S.
· Convenience factor: Higher mileage equals fewer stops to fill up.
· Longevity: Diesel engines are known for longevity and their fantastic resale value.
However, Volkswagen is not placing all of its eggs in one basket. We believe that there will be a more diverse range of propulsion technology and fuel combinations in the future, and Volkswagen is leading the way with important developments across the range. We are currently working on and developing battery electric vehicle technology, plug-in hybrid technology, hydrogen fuel cell technology, bio-fuels, and other exciting new technologies that will power tomorrow’s vehicles. We are not betting solely on any one technology for future vehicle propulsion, rather we are working on numerous technologies that will benefit future generations of consumers.
Does VW have any statistics that show the benefits to the driver (i.e. how much a driver can expect to save on fuel in the next 1-5 years driving this car) and the environment (i.e. any additional environmental benefits besides the fuel efficiency)?
This varies too much on the driving style of the individual, but we do know that diesel engines attain more than a 30 percent better fuel economy compared to a similar gasoline engine, and they emit about 25 percent less harmful greenhouse gas than gasoline engines. Here is something I found online though:
“According to EPA (www.fueleconomy.gov) a single comparison between the diesel and gasoline versions of the Volkswagen Jetta demonstrate that the diesel model would travel 36 percent more miles on a tank of fuel and save $321 annually on fuel costs, while using nearly two fewer barrels of oil and admitting one less ton of Green House Gas emissions each year.” source: Diesel technology Forum
Our clean diesel TDI models also qualify for an Advanced Lean Burn Motor Vehicle Federal Income Tax Credit. $1,300 on the Jetta TDI, $1,700 for the Golf TDI, and $1,150 for the Touareg TDI.
It sounds like the 2010 Golf is compliant with Europe’s proposed environmental standard? Does that mean that VW is launching a more sustainable car in the US than is currently available in Europe?
Vehicle currently meets all Tier II emission standards and we fully expect that we will meet the new emission standards of Government of 39.5 mpg by 2016 and all of the emissions standards that are part of it.
What is the single most important idea that you’d like to share with Lazy Environmentalists?
As I said above, the Volkswagen Group firmly believes that clean diesel technology represents the best alternative fuel vehicle choice today based on the existing infrastructure. However, this does not mean that we are only concentrating on this one technology. We believe there will be a more diverse range of propulsion technology and fuel combinations in the future, and consumers can be sure that the Volkswagen Group is leading the charge with important developments across the range. Everything from battery electric, and plug in hybrids to advanced zero emission high temperature fuel cell vehicles. Our goal is simple…to make a cleaner, greener world to live in while using our natural resources more efficiently and wisely.
Sounds good, Thomas. The clean diesel technology is a giant leap in the right direction that crushes anything that Flex Fuel was ever going to (ahem) accomplish. Meanwhile, check out the interior on the forthcoming 2010 Golf TDI. I haven’t seen too many sub $25,000 cars with a cockpit like that. And it’s a good thing because it’s that sunny-sweet, low-to-the-ground, high-torque-at-low-RPMs driving that keeps you pressed back in the seat cheesing “Guttentag” through a toothy grin and singing along with German radio stations.

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