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The VW Jetta TDI has proven to be quite popular in the short time it’s been on sale here in the U.S.: it has put sales of the Tiguan in the cooler and the ones that are available are very hard to get. Now the fairest Jetta of them all has set a Guinness World Record by traversing the lower 48 U.S. states while returning 58.82 mpg thanks to John and Helen Taylor.

The Taylors took 20 days to cover the 9,419 miles in a counter clockwise direction, and this wasn’t a hypermiling slow-as-you-can-go affair – they stayed within 5 mph of the speed limit. Their car was completely stock as it consumed just 11 tanks of ultra low sulfur diesel and traveled 853 miles per fill up. With that kind of mileage and handling high up on the fun factor, the Jetta TDI makes an excellent case for itself if you like driving and want to lower your fuel consumption.

VW also recently told us that the go-fast Jetta TDIs in the TDI Cup Series are returning an average of 25 mpg and doing their entire 7-race series on just two tanks of gas, which includes qualifying. If that’s true, there’s got to be another world record in there somewhere…

Clean diesel or hybrid drive? It’s an intriguing question, and one that’s not quite so easy to answer. There’s the price of diesel fuel to consider, which runs a few dimes over that of regular gasoline. Then there is fuel mileage. Does the Volkswagen Jetta TDI have a shot at dethroning the Toyota Prius as the undisputed mileage champion of the U.S.? To get a preliminary answer to some of these questions, Popular Mechanics put almost 500 miles on both cars, dividing up their miles between the city and the highway. It’s not a knock-out for either car, but it may offer some early answers to a few questions.

First, the mileage. In the city, there’s just no beating a hybrid, which uses its electric motor to good effect and scores over ten mpg better in the stop-and-go traffic of Los Angeles. On the highway, though, the Jetta TDI is able to eke out a narrow victory, scoring less than one mile per gallon better. Once the price of crude is factored in, the Prius remains the overall cheaper car to keep filled up. Of course, there is more to the story than that, including which car is a better to drive — according to PM, the Jetta. Finally, the TDI qualifies for a $1,300 tax credit that the Prius can’t claim. It’s too close to call. Expect a rematch soon enough.

The first race of the first all-diesel, road racing series in America took place this past weekend at VIRginia International Raceway,

 and we were there, or rather AutoblogGreen was there, to watch it go down. The gorgeous VIR long course proved to be a great setting for the opening round of Volkswagen’s new Jetta TDI Cup series. The new series is both a continuation of VW’s history of grassroots racing, as well as promotion for the new Jetta TDI that launches this summer. Volkswagen had an open casting call earlier this year for young amateur racing drivers and picked the 30 best to run in the promotional series. Prior to arriving at VIR for Friday’s first practice, the drivers had one day of actual running in the Jettas during the driver selection process at the beginning of April. Though the Jetta TDI race cars were slightly modified from their production counterpart for safety reasons, they still managed to retuFollowing two practice sessions on Friday and a 30-minute qualifying session on Saturday, 23-year-old Josh Hurley claimed the number one starting slot on the standing start grid for Sunday’s race. Yesterday afternoon, the field (ranging in age from three, 16-year-olds to one 26-year-old Gary Williams, Jr.) made a clean getaway for the 30-minute race. Although they were cautious at the start, it didn’t take long before cars were mixing it up. Anyone who remembers seeing first-generation (and later) Rabbits and Sciroccos on the track or autocross course would instantly recognize the three-wheel cornering stance of these Jettas during hard cornering. A few laps into the race, the first yellow flag flew bringing out the pace car for a couple of laps while the carnage was cleared. Once they were back under green, the Jettas were door-handle-to-door-handle through the corners as their tires howled. There was action aplenty with lots of lead changes, but ultimately, Mark Pombo crossed the line first with 1.63 seconds covering the first six cars. If you happen to be at one of the tracks where the Jetta TDI Cup is running this summer (check the schedule here), make sure you don’t wander off during this race. You won’t know any of these drivers names (yet), but the action is fun to watch and odds are at least some of these drivers may become household names in time.

Travel and lodging for this media event was provided by the manufacturer
rn 25 mpg… while racing.

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The new, fifty-state legal Jetta BlueTDI is finally done and it’s coming soon. At the International Vienna Motor Symposium in Austria, Volkswagen announced that it’s completed development on what they are calling the BlueTDI system for their US diesels. Like Mercedes (BlueTec) and BMW (BluePerformance), VW is adopting the Blue moniker for their cleanest, most efficient systems. The Jetta BlueTDI will be the first Tier2 Bin5 compliant diesels that doesn’t have to use a urea injection system to meet the new NOx emissions standard. VW started with the updated 2.0L TDI that was launched in the European Tiguan last fall. Individual cylinder pressure sensors were added that allow the engine management system to optimize the fuel injection pulses to keep combustion temperatures down. That helped VW eliminate 60-percent of the NOx emissions before you even get to the exhaust stream. The exhaust gas flowing from the 2.0L engine are low enough that VW was able to use a lean NOx trap to convert the remaining NOx to nitrogen and water. However, the larger 3.0L V-6 TDI that is coming in the Touareg and Audi Q7 at the end of the year will have to use urea injection. In addition to the NOx trap, there is a particulate filter to eliminate the soot often associated with diesel engines. The new Jetta will be able to get up to 60mpg when cruising on the highway, a boost of 12-percent over the last US-market Jetta TDI from 2006.

 The Jetta BlueTDI should be the first of the new round of diesels to come to market when it arrives later this summer. The first batch of cars should actually start arriving at US dealers in June, where they will be available for test drives through the summer before going on sale in September.

[Source: Volkswagen]Vienna Motor Symposium 2008: BlueTDI development completed successfully
BlueTDI will debut midyear in North America

The U.S. version of the Jetta will be the first to use BlueTDI
Wolfsburg, 24 April 2008 - At the International Vienna Motor Symposium (24-25 April), Volkswagen is to introduce the production version of the BlueTDI, a next-generation turbo diesel developed especially for the North American market. The common rail engine is based on the high-tech TDI, which was first introduced in Europe in 2007 with the Tiguan. This engine already satisfies the Euro-5 standard that comes into effect in autumn 2009. In order to meet specific operating conditions in the U.S., this four-cylinder engine was redeveloped with internal engine modifications and a NOx trap.

Background information: Five U.S. states1, including California, currently have the strictest emissions standards in the world (BIN5/LEV2). In spite of variations in fuel quality, which are more dramatic in the U.S. than in Europe, the new BlueTDI meets these emissions standards. The engine will debut in the U.S. Jetta this summer. For years, the Limousine has been the most popular and successful European-manufactured car on the American market, especially as a diesel.

The Jetta BlueTDI will debut as one of the cleanest and most economic cars of its class in the world. In the run-up to the Vienna Motor Symposium, Dr. Ing. Jens Hadler, Director of Volkswagen Powertrain Development comments, “high fuel prices and a dramatic change in environmental consciousness means that diesel is becoming more and more attractive for American drivers every day.” Dr. Hadler continues, remarking, “this is why many customers, especially in California, have been waiting for a super-clean diesel like our BlueTDI. I think this motor will help the diesel get its big break in America because it consumes so little and yet can go such long distances on a single fill-up. And in a country as big as the United States, this is a priceless advantage. On the highway, for example, this engine can reach up to 60 miles per gallon2. This is an improvement of 12 percent over its predecessor, which had a lower capacity and higher emissions.”

A key aspect in the development of the BlueTDI (2.0 litre engine displacement, 103 kW/140 PS, 320 Nm) was the reduction of nitrogen oxide emissions (NOx); the American BIN5/LEV2 standards stipulate a nitrogen oxide limit of only 0.05 g/mile. The engineers in Wolfsburg met this limit and the general reduction of raw emissions by using internal engine modifications, some of which are unique worldwide, and implementing the maintenance-free NOx trap.

These internal engine changes include modifications to the design of the injection system of both the American and European TDI as well as the implementation of cylinder pressure sensors. This allows for a completely new type of cylinder pressure-based combustion control, which is both faster and tailored to each specific cylinder. Also new on-board: an optimised high-pressure injection pump. Another unique feature is the combination of a high-pressure exhaust gas recirculation system with additional low-pressure exhaust gas recirculation. This dual exhaust gas recirculation (dual circuit EGR) is an effective means of reducing nitrogen oxides in the engine. The dual circuit EGR system alone reduces NOx by up to 60 percent.

Outside of the engine, it is the NOx trap – connected downstream of the oxidation catalytic converter and the particle filter – that reduces nitrogen oxide to an absolute minimum. Implemented together, these measures reduce nitrogen oxide emissions by 90 percent. Drive the Jetta BlueTDI and you will be driving one of the most economical and environmentally-friendly cars in America.

1) = BIN5 states: California, Massachusetts, Maine, New York and Vermont.
2) = MPG (miles per gallon) is the standard range specification in the U.S. for describing fuel consumption.

[Source: VW]